Outside diameter is 14" for years 1986-up. Crank Flange bolt pattern: 3.00"; clutch dia.: 11", 11.85"; starter ring gear teeth: 168. For one-piece crank seal. ... more info

This is a special performance valve spring used in ZZZ-ZZ1-ZZ2-ZZ3 350 create engines. This is a good spring for mild to high performance engines. Technical Notes: Single spring with damper with 1.273" O.D. and 1.16" solid height. The pressure at ... more info

For use on Chevrolet small-block V8 1995-99 first design and V6/90º engines. It is a direct replacement for all late model small-block and V6/90º front covers that use a bolt-on timing pointer. Replacement oil-seal: P/N 10243247. Technical Notes: Th ... more info

Aluminum rocker arm for small-block V8 engines. With 7/16" stud, ratio is 1.5:1 (16 rockers per part number) Technical Notes: Note: These V8 aluminum roller rocker arms (set of 16 or single) have Chevrolet Bow Tie logos. Main body has exclusive mu ... more info

Aluminum rocker arm for small-block V8 engines. With 7/16" stud, ratio is 1.6:1 (16 rockers per part number). ... more info

This extreme duty timing chain kit is for 1995 and newer model "Gen II" LT1 and LT4 engines. To convert 1993 and 1994 engines, you must use camshaft P/N 10224242, distributor P/N 1104032, timing cover P/N 12552426, vac harness P/N 12554395, and vac f ... more info

These small block 1.5:1 ratio aluminum rockers are similar to the rockers used in the 1996 Corvette LT4 engine, except the trunnions have been machined for early model 3/8" rocker studs. These kits of 16 rockers include nuts and instruction sheets. T ... more info

These small block 1.6:1 ratio aluminum rockers are similar to the rockers used in the 1996 Corvette LT4 engine, except the trunnions have been machined for early model 3/8" rocker studs. These kits of 16 rockers include nuts and instruction sheets. T ... more info

This special performance single roller design timing chain kit can be used on all 1987 and newer small block engines with roller lifter camshaft, except LT1, LT4, and 1997 and later LS1. This kit is quieter than the double roller chain. This kit incl ... more info

This small-block crankshaft is used in our 383 ci crate engines. The crankshaft forging is made of 4340 steel and has a 3.800" stroke. Use with the following components only: Single connecting rod - P/N 12497624 Set of 8 rods - P/N 12497870 Pis ... more info

This kit includes 8 of P/N 10108688 high quality 5.70" length PM connecting rods which are used in the LT1 and LT4 Corvette engine in place of the old "pink rod" for higher strength and reliability. These rods can be used in competition or as street ... more info

These small block V8 or V6 rocker arm kits include 16 stamped steel rockers with pivot balls and nuts. These self-aligning high quality rockers have a nominal 1:5.1 ratio. Use P/N 10089648 for single service part. Technical Notes: Use on all V8 mo ... more info

This high performance single valve spring has an outer diameter of 1.34". The kit includes 16 P/N 12551483 valve springs. See Valve Spring Chart for further information. This spring was for 1996 LT4 Corvette engines. Technical Notes: Not recommend ... more info

This deluxe serpentine belt drive system without air conditioner includes all the components to install on small-block Chevrolet engines. The bolts, nuts, spacers and braces are included with the following major items: 10055800 Secondary air injecto ... more info

This base serpentine belt drive system includes bolts, nuts, bracket, braces, pulleys, and water pump to install on small-block Chevrolet engine. Does not include the air compressor, alternator, power steering pump. Listed below are the major compone ... more info

This small-block connecting rod is used in our 383 ci crate engines. This steel PM connecting rod is 5.7" long from the center of the crankshaft hole to the center of the piston pin hole. The rod is machined to clear the camshaft in most small-block ... more info

This single valve spring is use on 1996 LT4 Production Corvettes and ZZ4 crate engines. Technical Notes: Single spring with 1.32" O.D. and 1.22" solid height. The pressure at installed height IS 101# @ 1.78" with 332# the average rate of pounds pe ... more info

Outside diameter is 14" for years 1986-up. Crank Flange bolt pattern: 3.00"; Converter Bolt Pattern.: 11.50"; starter ring gear teeth: 168. Heavy-duty flexplate with increased thickness for one-piece crank seal. Torque converters for TH350 and TH400 ... more info

This forged steel crankshaft is used on all 2nd design ZZ4 350 engines after November 1998 and can be used to replace all cast or steel forged crankshafts on ZZ4 engines only. Technical Notes: This crankshaft is made of 1053 steel and balanced to ... more info

Outside diameter is 12 3/4" for years 1955-85. Crank Flange bolt pattern: 3.58"; clutch dia.: 10.4"; starter ring gear teeth: 153. Lightweight nodular iron flyweel. Weighs approximately 15 pounds. For two piece crank seal. ... more info

Outside diameter is 12 3/4" for years 1986-up. Crank Flange bolt pattern: 3.00"; clutch dia.: 10.4"; starter ring gear teeth: 153. Standard weight flywheel for one-piece crank seal. ... more info

Outside diameter is 14" for years 1986-up. Crank Flange bolt pattern: 3.00"; Converter Bolt Pattern.: 10.75", 11.50"; starter ring gear teeth: 168. For one-piece crank seal. Torque converters for TH350 and TH400 transmissions are produced with both 1 ... more info

Outside diameter is 12 3/4" for years 1986-up. Crank Flange bolt pattern: 3.00"; Converter Bolt Pattern.: 10.75"; starter ring gear teeth: 153. For one-piece crank seal. Used with 5.7-liter HO engine. Torque converters for TH350 and TH400 transmissio ... more info

This dual valve spring is recommended for competition camshafts with .560" maximum valve lift. It produces 140 pounds seat pressure at an installed height of 1.75". Technical Notes: This spring is 1.379" in diameter. Spring pockets on V6/60º cylin ... more info

This is a special performance valve spring for racing camshaft P/N 3927140. This is a good spring for mild racing engines. Technical Notes: Single spring with damper with 1.273" O.D. and 1.16" solid height. The pressure at installed height is 110# ... more info

Outside diameter is 12 3/4" for years 1969-85. Crank Flange bolt pattern: 3.58"; Converter Bolt Pattern.: 9.75", 10.75"; starter ring gear teeth: 153. For internally balanced engine with two-piece crank seal. Torque converters for TH350 and TH400 tra ... more info

Outside diameter is 14" for years 1970-850 Crank Flange bolt pattern: 3.58"; Converter Bolt Pattern.: 10.75", 11.50"; starter ring gear teeth: 168. For externally balanced 400ci small-block only. Use with balancer P/N 6272225. Torque converters for T ... more info

Outside diameter is 12 3/4" for years 1986-up. Crank Flange bolt pattern: 3.00"; clutch dia.: 10.4", 11"; starter ring gear teeth: 153. Lightweight nodular iron flyweel. Weighs approximately 16 pounds. For one-piece crank seal. ... more info

This off-highway camshaft kit has the major valve train component to convert production LT1 engine for showroom stock racing, or hop up your small block Chevrolet V8 that was originally equipped with a roller tappet camshaft. The 1.6 roller rockers, ... more info

This deluxe serpentine belt drive system with air conditioner includes all the components to install on small-block Chevrolet engines. The bolts, nuts, spacers and braces are included with the following major items: 10055800 Secondary Air Injector p ... more info

This high performance dual valve spring has an outer diameter of 1.379". The kit includes 16 P/N 330585 valve springs. ... more info