Callies has developed a Duramax crankshaft that employs the industry’s best ideas. Improving the balance characteristics of this crankshaft was a primary design consideration. Increased counterweight angles, diameters and thickness are instrumental in making this the easiest balancing crankshaft of its type on the market today. For improved stiffness and durability rod journals are machined to a width that maximizes the effectiveness of all rod bearing inserts without unnecessary connecting rod mass. All Callies Duramax crankshafts are machined from triple heat treated 4330v steel before receiving our Perma-Case nitride. These crankshafts will accommodate all bearing inserts commonly available for GM Duramax engines.
The ultimate crankshaft for the Ford 460 / 429 competitor is here. Ultra Boost Big Block Ford crankshafts have been designed with both durability and ease of balance in mind. All Ultra BB Fords are machined with a 3.018″ post. Ford BB Ultra crankshafts employ 3.000” mains and 2.200” rod journals, they can be ordered with a stroke custom tailored to your exact requirement. Ultra BB Fords are produced with center counterweights that can be removed by special order.
At Callies, design consideration has been given to address the inadequacies of OEM crankshafts for the GT-R engine. Each Callies GT-R crank is carefully monitored, beginning with ultra pure 4330V steel that receives multiple heat treatments through final nitride & polish. Initially introduced with a 94.4mm stroke, additional strokes are now available. For dry sump applications, an extended post option is also available. Callies GT-R crankshafts are machined to accommodate 2.200” Big Block Chevy rod journals. This common diameter will allow engine builders easy access to a wide variety of bearing options. Standard main bearing, post and seal diameters are used throughout this crankshaft.
Callies Ultra Boost family of crankshafts represent the pinnacle of severe duty shafts. Designed specifically for the most harrowing, ultra-high output applications where no exceptions are to be made for reliability, years of experience and talent culminate to shape the industry’s most capable crankshaft. Each Ultra Boost crank is machined from Callies’ renowned 4330 bar stock, sourced from TimkenSteel right here in Ohio. Taking lessons from the Top Fuel world, where our crankshaft routinely outperforms the competition, we’ve implemented similar design language into the Ultra Boost line. Two of the most prominent changes include increased material found on the pin arms and pin tops. These changes, along with others, allow for the most reliable crankshaft that is offered today— helping make sure you spend more time at the track than in the shop.
Callies has developed a wide range of part numbers for the Small Block Chevy engine family. Any main journal, rod journal, post configuration, stroke or other specialized characteristic that you may require can be provided. Callies Ultra boost crankshafts are truly custom made to match your project.
Our Ultra Boost family of crankshafts represent the pinnacle of severe duty shafts. Designed specifically for the most harrowing, ultra-high output applications where no exceptions are to be made for reliability, years of experience and talent culminate to shape the industry’s most capable crankshaft. Each Ultra Boost crank is machined from Callies’ renowned 4330 bar stock, sourced from TimkenSteel right here in Ohio. Taking lessons from the Top Fuel world, where our crankshaft routinely outperforms the competition, we’ve implemented similar design language into the Ultra Boost line. Two of the most prominent changes include increased material found on the pin arms and pin tops. These changes, along with others, allow for the most reliable crankshaft that is offered today— helping make sure you spend more time at the track than in the shop.
Callies has developed a wide range of part numbers for the Big Block Chevy engine family. Any main journal, rod journal, post configuration, stroke or other specialized characteristic that you may require can be provided. Callies Ultra boost crankshafts are truly custom made to match your project.
Our Ultra Boost family of crankshafts represent the pinnacle of severe duty shafts. Designed specifically for the most harrowing, ultra-high output applications where no exceptions are to be made for reliability, years of experience and talent culminate to shape the industry’s most capable crankshaft. Each Ultra Boost crank is machined from Callies’ renowned 4330 bar stock, sourced from TimkenSteel right here in Ohio. Taking lessons from the Top Fuel world, where our crankshaft routinely outperforms the competition, we’ve implemented similar design language into the Ultra Boost line. Two of the most prominent changes include increased material found on the pin arms and pin tops. These changes, along with others, allow for the most reliable crankshaft that is offered today— helping make sure you spend more time at the track than in the shop.
Callies has developed a wide range of part numbers for the continually evolving and popular LS family of engines. Any main journal, rod journal, post configuration, stroke or other specialized characteristic that you may require can be provided. Callies Ultra boost crankshafts are truly custom made to match your project.
Our Ultra Boost family of crankshafts represent the pinnacle of severe duty shafts. Designed specifically for the most harrowing, ultra-high output applications where no exceptions are to be made for reliability, years of experience and talent culminate to shape the industry’s most capable crankshaft. Each Ultra Boost crank is machined from Callies renowned 4330 bar stock, sourced from TimkenSteel right here in Ohio. Taking lessons from the Top Fuel world, where our crankshaft routinely outperforms the competition, we’ve implemented similar design language into the Ultra Boost line. Two of the most prominent changes include increased material found on the pin arms and pin tops. These changes, along with others, allow for the most reliable crankshaft that is offered today— helping make sure you spend more time at the track than in the shop.
A Callies Ultra boost is the right choice for the ever increasing horsepower of high output Ford engines. Ford Ultra boost crankshafts are available in a wide variety of configurations to suit your exact need. These crankshafts include many standard features that are found only as options with other crankshaft brands. Ultra boost crankshafts are available for both 351 and 302 applications.
Our Ultra Boost family of crankshafts represent the pinnacle of severe duty shafts. Designed specifically for the most harrowing, ultra-high output applications where no exceptions are to be made for reliability, years of experience and talent culminate to shape the industry’s most capable crankshaft. Each Ultra Boost crank is machined from Callies’ renowned 4330 bar stock, sourced from TimkenSteel right here in Ohio. Taking lessons from the Top Fuel world, where our crankshaft routinely outperforms the competition, we’ve implemented similar design language into the Ultra Boost line. Two of the most prominent changes include increased material found on the pin arms and pin tops. These changes, along with others, allow for the most reliable crankshaft that is offered today— helping make sure you spend more time at the track than in the shop.
The Callies Ultra Dirt crankshaft family represents the most reliable and highest performing evolution in shaft design for naturally aspirated applications. Machined from Callies’ American made 4330 bar stock or proprietary 4340 forgings, this crankshaft was specifically designed for circle track and endurance racing where the least amount of reciprocating weight is demanded, while not sacrificing strength. Improvements over the outgoing XB and XL cranks include more robust pin arms to decrease torsional fatigue, radially narrowed counterweights (versus pendulum-cut), as well as more material around the centerline to virtually eliminate flexing. These changes come together to make the best endurance crankshaft available so that your engine runs better, for longer.
The Callies Ultra Dirt crankshaft family represents the most reliable and highest performing evolution in shaft design for naturally aspirated applications. Machined from Callies’ American made 4330 bar stock or proprietary 4340 forgings, this crankshaft was specifically designed for circle track and endurance racing where the least amount of reciprocating weight is demanded, while not sacrificing strength. Improvements over the outgoing XB and XL cranks include more robust pin arms to decrease torsional fatigue, radially narrowed counterweights (versus pendulum-cut), as well as more material around the centerline to virtually eliminate flexing. These changes come together to make the best endurance crankshaft available so that your engine runs better, for longer.
The Callies Ultra Dirt crankshaft family represents the most reliable and highest performing evolution in shaft design for naturally aspirated applications. Machined from Callies’ American made 4330 bar stock or proprietary 4340 forgings, this crankshaft was specifically designed for circle track and endurance racing where the least amount of reciprocating weight is demanded, while not sacrificing strength. Improvements over the outgoing XB and XL cranks include more robust pin arms to decrease torsional fatigue, radially narrowed counterweights (versus pendulum-cut), as well as more material around the centerline to virtually eliminate flexing. These changes come together to make the best endurance crankshaft available so that your engine runs better, for longer.
The Callies Ultra Dirt crankshaft family represents the most reliable and highest performing evolution in shaft design for naturally aspirated applications. Machined from Callies’ American made 4330 bar stock or proprietary 4340 forgings, this crankshaft was specifically designed for circle track and endurance racing where the least amount of reciprocating weight is demanded, while not sacrificing strength. Improvements over the outgoing XB and XL cranks include more robust pin arms to decrease torsional fatigue, radially narrowed counterweights (versus pendulum-cut), as well as more material around the centerline to virtually eliminate flexing. These changes come together to make the best endurance crankshaft available so that your engine runs better, for longer.
The Callies Ultra Dirt crankshaft family represents the most reliable and highest performing evolution in shaft design for naturally aspirated applications. Machined from Callies’ American made 4330 bar stock or proprietary 4340 forgings, this crankshaft was specifically designed for circle track and endurance racing where the least amount of reciprocating weight is demanded, while not sacrificing strength. Improvements over the outgoing XB and XL cranks include more robust pin arms to decrease torsional fatigue, radially narrowed counterweights (versus pendulum-cut), as well as more material around the centerline to virtually eliminate flexing. These changes come together to make the best endurance crankshaft available so that your engine runs better, for longer.
The Callies Ultra Dirt crankshaft family represents the most reliable and highest performing evolution in shaft design for naturally aspirated applications. Machined from Callies’ American made 4330 bar stock or proprietary 4340 forgings, this crankshaft was specifically designed for circle track and endurance racing where the least amount of reciprocating weight is demanded, while not sacrificing strength. Improvements over the outgoing XB and XL cranks include more robust pin arms to decrease torsional fatigue, radially narrowed counterweights (versus pendulum-cut), as well as more material around the centerline to virtually eliminate flexing. These changes come together to make the best endurance crankshaft available so that your engine runs better, for longer.
Callies now offers high quality domestically produced Magnum crankshafts for the Ford 460 – 429 engine families. These crankshafts are machined from high quality forgings that are heat-treated and metalurgically certified at our facility. Magnum Ford 460’s are counterweighted to balance bob weights up to 2400 grams without the use of heavy metal. We are confident in the ability of our Magnum 460’s to easily withstand the rigors of a 2,000 HP engine.
Each Callies Stock Eliminator crankshaft is built to the exacting requirements of Stock Eliminator class requirements. Machined from Callies proven 4340 forgings, these crankshafts will provide years of trouble free service. Both 3.773” or 4.013” strokes will tip the scales at an OEM equivalent 67 pounds. Callies Stock Eliminator crankshafts are produced with standard BBC rod and main journal diameters.
The Callies Duramag billet crankshaft is designed to be the last crank you ever need for your LB7 thru LML Duramax engine. These cranks are fully machined from domestically-sourced 4330 steel in our Ohio plant. Intended for the most extreme applications, some features of these shafts include large fillet radii across all journals, a nitrided surface, narrowed rod journals (2.154”), and straight shot oil holes. Additionally, these billet cranks are intended for an internal balance, resulting in reduced harmonics under high loads.
Lightweight Small Block Chevy
The Compstar Comet is your answer to lightweight crankshaft needs for Small Block Chevy engines. Produced from 4340 forged steel that is triple heat-treated and nitrided, Compstar Comets are ready for long term, trouble free use.
Each Comet features gun drilled mains, lightened rods, pendulum cut counterweights, and a star flange. All journals are polished to 5Ra or finer and match sized to within .0003 inch or less throughout the entire crankshaft. Comets are produced with .125 journal radii and require performance grade bearing inserts. Currently, Comets are only available with 350 mains.
Compweight Big Block Chevy
Drawing from the deep history of experience at Callies, our Compstar engineers have been able to combine the best characteristics of performance crankshaft design into the Compstar “Compweight” for Big Block Chevy applications Produced from 4340 material that is triple heat treated and stress relieved during machining. Compstar BBC Compweights will remain true during severe duty use.
All Compstar Compweights are center counterweighted for reduced bearing loads during high RPM use. Machined with .125 journal radii and conventional straight shot oiling, these cranks offer simple durability. With all 4 rod journals drilled, Compstar BBC Compweight cranks weigh in at 75lbs or less. Compweights are fully deep case nitrided.
LSX engines are taking the performance market by storm. To answer the needs of engine builders who are testing new limits, Compstar has developed the widest range of LSX crankshafts available anywhere. Regardless if your application is road race, marine, circle track, or street/strip, Compstar has the configuration you need.
Made from 4340 steel that is deep nitrided for strength and wearability, every Compstar crank is intended for high output installation. Compstar LSX crankshafts are counterweighted for enhanced bearing load distribution, which allows these shafts to withstand both high boost and high RPM applications.
Machined with large journal radii, gun drilled mains, and fully lightened rod journals, the Compstar LSX crankshaft is truly built for performance. To accommodate your engine control system, Compstar LSX shafts can be specified with either late LS2 – LS7 58 tooth or the early LS1 – LS6 style twin timing wheels. If you are building a dry sump LS7 style engine, Compstar offers an extended length post to easily complete your project.
Compstar LSX – 8 Counterweight cranks are sold rough balanced to 1850 grams, or finish balanced to your bob weight.
Ford Coyote engines have proven their exceptional capabilities both at the track and on the street. Callies Compstar 4340 Steel Crankshafts were designed to support the additional horsepower and torque being generated in these applications. These cranks are machined with large strength enhancing journal radii like all Compstar crankshafts and come nitrited. These cranks are available in three configurations. A stock 92.7mm stroke with “Standard” Coyote Rod journal, a 96.5mm (3.800″) stroke and a 99.06mm (3.900″) stroke. All standard OEM driveline, valvetrain and accessory components can still be utilized.
Every aspect of this crank has been meticulously engineered. It starts up front with a post that is dual keyed to securely locate supercharger drive pulleys, and ending with journals that are super finished. For ease of assembly, rod journals are standard SB Chevy diameter and width. Counterweights have been profiled for 6.125 inch connecting rods.
Compstar Hemi cranks are manufactured from 4340 steel and range in stroke from 3.800 – 4.080. Also for improved crank case ventilation and reduced weight, main journals are gun drilled.
All Compstar Hemi crankshafts are shipped with your choice of reluctor to meet your vehicles need.
Compstar billet crankshafts for the Viper are meant for hardcore race applications. These shafts are machined from 4340 steel for durability and nitride surface hardened for excellent bearing life. Compstar Viper V-10’s are produced with 2.100 Chevy rod journal diameters and widths, and are available with either 10mm or 7/16 flange threads. Strokes available will be 4.200” and 3.960”. Compstar Viper V-10’s can be ordered with a (60-2) notch tone wheel configuration.
Callies Durastar crankshafts are designed to be substantially stronger than OEM shafts currently found in GM’s popular Duramax diesel. This improvement is the result of substantially stronger steel, considerably deeper nitride layer and unique machining features.
Durastar crankshafts are intended to be externally balanced with stock damper and flywheel configurations.
Designed for Maximum Effort engines, all SS (Sport Series) crankshafts are finished with the same care and detail as the entire line of Compstar crankshafts. All SS cranks are sold balanced, ready for assembly. SS crankshafts by Compstar feature the best metallurgy and heat treatment on the market today.
Premium grade material, design and craftsmanship set Sport Series components for Subaru engines apart from other manufacturers of high performance engine components. Every Subaru component is meticulously inspected prior to shipment. When combined with world class material and design, this final attention to detail ensures you are getting the reliability you expect from every Callies product.
Billet and Forged Crankshafts for the Mitsubishi 4G63 are now available from Callies Performance Products. These 4340 material crankshafts are metallurgically and geometrically certified to the same quality standard of all Compstar by Callies crankshafts. These 4G63 crankshafts feature Twin Shot rod journal oiling and are available with race proven Aeroshed super finishing.
Honda Sport Series connecting rods are available with either ARP 2000 or Custom Age 625 bolts for High Output applications. All Sport Series rods are H-beam design machined from fine grained steel. Wrist pin bushings are of deformation resistant Ampco 18 material.
Intended for High RPM, High Output engines all Honda Sport Series crankshafts are finished with the same care and detail as the entire line of Compstar crankshafts. All SS cranks are sold balanced and ready for assembly. SS crankshafts by Compstar feature the best metallurgy and heat treatment on the market today.
Machined as an enhancement to the formidable Toyota 2JZ engine, Compstar Sport Series crankshafts are your best choice for extreme durability. Beginning with high grade 4340 steel and finished with the proven Callies premium in house nitride treatment these crankshafts are start to finish the best available in today’s market. Available in three strokes, all 2JZ shafts are machined to accommodate standard rod and main journal sizes.
All SS cranks are sold balanced, ready for assembly. SS crankshafts by Compstar feature the best metallurgy and heat treatment on the market today.
Ultra-Assassin rods are made entirely in the U.S.A. Every Ultra connecting rod is produced from specially formulated TimkenSteel 4330V grade steel. This material is then precision forged in Michigan and machined in our Fostoria, Ohio facility. Assassin Series Rods are near net as forged rod with minimal machining. Assassin Series rods are fastened by high alloy cap screws made specifically for severe duty service by ARP Inc. To eliminate deformation and extrusion only AMS 642 bronze alloy is used within the wrist pin housing bore.
Callies Ultra Enforcer connecting rods are produced from extremely clean TimkenSteel Product that is formulated to our exact specifications. This proprietary steel is forged in Trenton, Michigan, and manufactured 100% in our Fostoria, Ohio facility. Pride in workmanship, and attention to detail are qualities you’ll discover during careful examination of our finished product. Each step of the manufacturing history of every Ultra connecting rod is meticulously maintained by our manufacturing team. You can be confident of the material and workmanship of these quality components.
Designed with fortified tower flanges, Enforcer I-beam connecting rods are the ideal component for turbo charged and super charged engines.
Ultra connecting rods are made entirely in the U.S.A. Every Ultra connecting rod is produced from specially formulated TimkenSteel 4330V steel. This material is then precision forged in Michigan and fully machined in our Fostoria, Ohio facility.
Many geometric nuances have been incorporated into the design of Ultra connecting rods. These design features enhance the Ultra against specific loads and stresses which are applied to connecting rods subjected to high load, high RPM applications. Ultra connecting rods are fastened by high alloy cap screws made specifically for severe duty service by ARP Inc. Produced with rolled threads, these unique bolts offer improved thread engagement for a smoother more consistent net clamping load. To eliminate deformation and extrusion only AMS 642 bronze alloy is used within the wrist pin housing bore.
Ultra I-Beams are available in our standard weight version for extreme duty racing applications of popular Big Block Chevy, Small Block Chevy, Chevy LS, Big Block Ford, Small Block Ford, RY45, Ford Modular, Nissan GTR, Buick 3.8, as well as lightweight versions for select SBC configurations. For superior clamping, a Custom Age bolt upgrade is available for all Callies I-Beam connecting rods.
Callies Ultra connecting rods are produced from extremely clean TimkenSteel that is formulated to our exact specifications. This proprietary steel is forged in Trenton, Michigan, and manufactured 100% in our Fostoria, Ohio facility. Pride in workmanship, and attention to detail are qualities you’ll discover during careful examination of our finished product. Each step of the manufacturing history of every Ultra connecting rod is meticulously maintained by our manufacturing team. You can be confident of the material and workmanship of these quality components.
The Ultra H-Beam configuration was recently added as part of our expanding connecting rod line. Made from the same premium grade TimkenSteel material, the Ultra H-Beam connecting rod is designed to satisfy the requirements of the most demanding racing applications.
Callies is pleased to introduce the Ultra XD connecting rod. This unique patent pending configuration is designed for additional cam to rod clearance in long stroke Big Block and Small Block Chevy racing engines. In most cases, the XD connecting rod will provide approximately .050″ more cam clearance than our conventional Ultras, and substantially more over many of our competitor’s connecting rods.
Compstar engineering leads the way in High Value connecting rod design. The original Compstar H-beam rods were conceived around the idea that high quality and affordability can come in the same package. The time saved in preparation for use becomes an added value that you’ll discover during your engine build. Dimensional repeatability and the proper clearances for high performance use right out of the box also add value, as well as peace of mind. Attention to detail has long been the trademark of Compstar rods.
If you don’t see your Compstar H-Beam Connecting Rod listed here, check our Compstar Sport Series line or our new Compstar Xtreme line.
Designed and produced with engineering and finished advancements taken from our Ultra and Compstar rods. Compstar UTV connecting rods have what it takes to make your engine build trouble free and your finished product reliable. Produced from heat treated and stress relieved 4340 material, our H-beam Compstar rods are fully machined with a shot blasted Stress Riser free surface. Finished and sized in our plant in Ohio, every detail of this highly stressed component has been carefully analyzed to maximize dependability. All UTV rods have ARP Fasteners.
The next step in the Compstar line up. All the quality, reliability and workmanship you have relied upon for years from the Compstar line up is taken to the Xtreme. Specifically designed for power adder and diesel applications. The Compstar Xtreme utilizes the same proven 4340 material and ARP 2000 or L19 fasteners. Strength is added by thickening up the flanges of the H beam and a reduced depth of cut towards the center of the rod. Then non-essential weight is taken out of the beam to help keep the overall weight of this rod in check.
Callies fully finished camshafts are machined and heat treated entirely in house. This continuity of manufacturing allows Callies to deliver high quality camshafts on schedule. Our finished cams are ground with the latest Landis CNC technology. They are ADCOLE and Jenoptik inspected for accuracy, making them the most consistent cams on the market today. If required, your cams can be finished with inverted flank lobe profiles and complex VVT oil channels and drillings.
Callies Cam Research Lab – Valvetrain durability is a key ingredient to the success of every engine. The Callies Cam Research Lab has been established to guarantee that our cams are capable of extended life cycles in abusive applications. When combined with our metallurgical capabilities, the Callies Cam Research Lab allows evaluation of lobe profiles, valvetrain systems and processing methods like no other cam company. Spintron testing enables our engineering staff to evaluate valvetrain stability in minute detail up to 11,000 RPM. Programmable test cycles allow complete event simulation. Sixteen channel data acquisition can provide monitoring of temperatures, pressures, flows, loads and strain. Let Callies help you design your next step forward.
Carburized & Hardened 8620 steel camshaft cores are produced to AMS 2301 (AQ) standards. Our engineering staff can create an unground lobe profile to your exact requirement. Carbocore cams are machined and heat treated entirely in house.
Callies Indurocore camshaft cores can be machined to your specification from either 1050 or 4150 alloy steel. Every Indurocore cam is induction hardened in house at Callies. This process is carefully monitored, guaranteeing metallurgical consistency. Indurocore cams are available for a wide range of engines.
Callies metallurgy and heat treat teams have perfected a revolutionary process that offers unrivaled camshaft durability. Titan Tool Steel Camshafts give you more options for performance, enhancing geometry while increasing life expectancy. Fully finished Titan cams are available for a wide range of engines and applications.
Valve Train Group – VTG is the finish ground series of camshafts manufactured by Callies Performance Products. We offer cams to serve a wide variety of applications for many popular engine platforms.
VTG cams are available in multiple types of aircraft quality materials. Less aggressive profiles fit nicely within our induction hardened 1050 or 4150 materials. 8620 carburized material works well for many racing applications. Tool steel is available for the most extreme applications.
Keeping the valvetrain under control is vital to a successful engine program. Our lobe profiles are designed to produce excellent power without sacrificing durability. They are precision ground in our Landis CNC grinders, with event timing and lobe profile tolerances verified in our Adcole inspection gages.
With a long history of superior quality grinding experience, VTG by Callies is the right choice for all of your camshaft needs.
Energy Manufacturing billet blocks begin life as a 490 pound block of high grade forged 6061 aluminum. Featuring rolled thread tapped holes for extra strength and high strength cylinder liners, careful attention is given to fit and finish of the overall block. Each semi-finished block is thoroughly heat treated to T6 standards.
Together with Energy Manufacturing Ltd. (Energy), Callies Performance Products (Callies) announces a new licensing deal with Fiat Chrysler Automobiles to manufacture and distribute the 426 Hemi and the 440 Wedge cast iron engine blocks and cylinder heads (cast iron and cast aluminum). The agreement provisions Energy to produce the cast iron blocks and cylinder heads while Callies, their sister company, will manufacture supporting componentry and rotating assemblies. Sales and distribution will be based at Callies in Fostoria, Ohio.
All parts manufactured will carry authentic Mopar part numbers and be produced from original Mopar molds, cores, and engineering data.
For questions, builders and racers should contact Callies by calling their sales office at (419) 435-2711.
Callies tungsten heavy metal is specially machined to ease installation and produce an excellent appearing product. Our HM slugs are center-less ground, then precision turned to length and chamfered. The result is unmatched dimensional consistency.
Wide ranges of lengths are available to specifically match the variety of counterweight thicknesses found on Chevy, Mopar, and Ford crankshafts. Diameters from 0.500″ up to 1.3770″ make locating the exact weight much easier.
Let the professionals at Callies pair your crankshaft with all the proper bottom end components. Fully balanced and ready to assemble rotating assemblies from Callies not only save you time and money, they provide the peace of mind that your components are matched for compatibility, giving you a trouble free project.
Due to the vast offerings of parts and individual needs, no two speed packs are the same. Formulating your engine combination is a highly consultative process. Before contacting our technical department, please have the following information, desired cubic inches, desired compression ratio, cc of the cylinder heads, final bore and deck height.
Our technical staff is ready and willing to assist you.
Callies designed this high quality stud kit specifically for use with our crankshafts employing deep hole post drilling. The kits are available in various lengths to suit a variety of crankshaft post driven accessory drives.
-The kit consists of a roll-threaded stud, parallel ground washer, and 12-point nut, all made of 8740 moly steel.
-Intended as a great companion item, Callies has developed a hex head hat washer that will simplify turning over the engine. It is manufactured from 8740 material, heat treated to 40Rc, and designed to allow a bolt head or nut to fit within its thickness, making it ideal for use in tight quarters.
| DAMPER STUD, WASHER & NUT KITS | ||
| CPPI-013D | 7/16 x 5.409 damper stud kit | |
| CPPI-013E | 7/16 x 8.396 damper stud kit | |
| CPPI-013F | 7/16 x 10.396 damper stud kit | |
| CPPI-013G | 7/16 x 6.396 damper stud kit | |
| DAMPER STUD KIT COMPONENTS | ||
| CPPI-013DS | 7/16 x 5.409 damper stud | |
| CPPI-013ES | 7/16 x 8.396 damper stud | |
| CPPI-013FS | 7/16 x 10.396 damper stud | |
| CPPI-013GS | 7/16 x 6.396 damper stud | |
| CPPI-013SS | 1/2 x 7.000 damper stud | |
| CPPI-021B | 7/16 ID, 2.125 OD stud washer, w/ hex nut | |
| APN12-1 | 7/16 12 point nut | |
1. Make sure threads in crankshaft are clean and are good threads.
2. Lightly coat the end of the stud going into the crank with “NEVER-SEEZ” (note: “Never-Seez” is the only material to be used!)
3. Install stud with 15 ft./lbs. of torque. DO NOT use any Loctite type products.
4. Install damper and accessories.
5. Install .300″ thick washer. Make sure the surface the washer is going against is parallel.
6. Lightly coat threaded area where the nut goes and coat the bearing surface of the nut with “NEVER-SEEZ.”
7. Install nut using 75 ft./lbs. of torque. (except CPPI-013F use 65 ft./lbs. of torque)
| Stud Kits Available: | “A” – “B” Dimension | Correct Stud Kit |
| (Kit Includes 6pt. Nut, .300? Thick Ground Washer & Stud) | 0.770″ to 0.832″ | CPPI-013D 7/16″ x 5.409″ |
| 0.803″ to 1.819″ | CPPI-013G 7/16″ x 6.396″ | |
| 1.640″ to 3.819″ | CPPI-013E 7/16″ x 8.396″ | |
| 3.042″ to 5.819″ | CPPI-013F 7/16″ x 10.396″ |
These shafts can be ordered in strokes ranging from 88mm to 98mm. Callies GTR’s are manufactured with Nissan OEM main bearing and Big Block Chevy rod journal diameters. Special attention was given to critical areas making this one of the strongest GTR billet crankshafts available. Machined from 4330V and deep case nitride this shaft is built for durability. Stock accessory drives and drive line components can be used.
