Big Block Chevy Engines

These kits fit GM Mark IV, Gen V and Gen VI big block Chevy engines.

Will These Pulley Kits Clear the Cross Member on a C2 or C3 Corvette?

These kits normally clear the cross member on otherwise stock 1965 - 1982 C2 and C3 Corvettes.

That being said, issues such as age, condition, manufacturer, etc. of motor mounts can cause clearance problems.  Fortunately, most clearance issues can be solved by putting a spacer between the engine and the motor mount.  This was a factory solution for GM on 1966-74 big block Corvettes with air conditioning.  The factory style spacers are reproduced and are available from various Corvette suppliers listed below.  They are specified for big block, but they will fit Chevy small block engines as well.

1963 - 1964 engines will most likely have to be shimmed upward for the crank pulley to clear the cross member. Make sure you have enough hood clearance!

Part numbers for the engine mount shims:

GM #3910756 (for reference only, no longer available)
Corvette Central #302001, www.corvettecentral.com
Mid America Motorworks #670-199, www.mamotorworks.com
Volunteer Corvette #EN65X, www.volvette.com
Zip Corvette #M-2494, www.zip-corvette.com

Harmonic Damper

Some factory Gen VI engines may have a different harmonic damper that must be changed. See picture below.

Additional Notes

• All Basic kits use two 6 groove serpentine belts (BCB02 kit has one 6 groove serpentine belt running from the crank to the waterpump and alternator and one 6 groove serpentine belt running from the crank to the waterpump)
• Basic kits can be used with electric and mechanical cooling fans
• Our kits will not work with engines mounted with front motor mounts. Side motor mounts are recommended