This summary will hopefully save time and prepare the mechanic for the installation of a serpentine belt assembly on a big block Chevy in a 1964 – 1967 Chevelle. These instructions should be the same for all GM “A” body’s. First, it will be necessary to order a set of conversion brackets from Kwik Performance to allow for the installation of a serpentine belt bracket system. The best brackets to work with will be from a 1994 truck small block or V6 set-up.
Here is a list of parts you will need to complete this installation in the GM “A” body.
1. Kwik Performance BBC Conversion Brackets (Comes with installation hardware)
2. 1994 Chevy 350 or V6 serpentine Belt Bracket set-up w/Alt, AC Comp & Water Pump.
3. Standard 1994 serpentine belt may work fine, but check for clearances
4. A Big Block Chevy Radiator is required for this car (model 1966 - 1967)*
5. Swivel Neck thermostat housing water outlet.
6. Upper Radiator Hose Part: Gates 20983
7. Lower Radiator Hose: Gates 20609
8. Hayden fan spacer: Hayden 3969
9. Fan: Flex-a-lite 1518 Gold Flex-a-lite Reverse rotation
10. A set of 1988-1999 454 BBC fan and crank pulleys from JEGS
* I preferred to use a performance radiator such as Superior Radiator in Mt. Clemens Michigan. They use an all aluminum two 1” core style that would be difficult to overheat., even with A/C. Prepare to use around 6 gallons of liquid with this puppy. The radiator cost is minimal, compared to a conventional 1966 Chevelle BBC Radiator. A small block radiator will not do the job what so ever.
Get Started
Remove the positive battery lead for safety. Remove all the belts, water pump and pulleys from the engine. As noted in the Kwik installation instructions, you will have to buy the 1988 up “454” water and crank pulleys from a company like JEGS. They have the right ones and shipping is quick. Remove the old water neck from the intake.
Once all the brackets and accessories have been removed, install the new water pump, followed by the Kwik installation brackets. Be sure all bolts are tight. Install the serpentine belt brackets for both the left and right. Tighten to specifications. Install the new “454” pulleys for the water pump and crank. Trial fit the belt to insure proper clearance of the idler and the fan pulley.
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