BBC (66-93) Late Serpentine Conversion Kit with Crank Pulley Adapter - K10474

What’s included:
Adapter plates made of 6061-T6 aircraft grade aluminum (brushed satin finish)

CNC machined crank pulley adapter

Zinc coated fasteners
-Bolts for adapter plates AND to attach GM brackets included
-Both 3/8 and 7/16 bolts are included for the passenger side head, since the holes vary for different years

What else is required to complete the installation:

GM BBC engine (1966-1993)
-366, 396, 402, 427, 454, 502, 572

AC and Alt/PS aluminum drive brackets off of a GM Truck (SBC) engine listed above.
The brackets should include the idler and tensioner.

Air conditioner compressor (from donor vehicle)

Alternator (from donor vehicle)

Power Steering Pump (from donor vehicle)

A smooth water pump pulley is required (GM part number 10085760 or 19418445)

Donor engines DO NOT have the correct pulley. (Has different bolt pattern)

Correct Water Pump Pulley: (Kwik Performance PN 19418445).

A reverse rotation water pump off of a 1988-1999 454 engine. This is considered a "long" pump and is 7 5/16" from block to fan mounting surface.

A small-block crankshaft pulley (from donor vehicle)
Donor engine didn't come with crank pulley? We've got you covered: SBC Crank Pulley: (Kwik Performance PN 10085754).

Six-rib belt, See our included installation instructions for suggested lengths and Gates part numbers. Complete Gates belt chart available under installation instructions.

Alternator rating and PS pulley diameters can change suggested lengths.

Always check tensioner marks for correct fitment.

A tall deck engine will require a belt that is about 1" longer.

A new thermostat housing may be needed to allow the upper radiator hose to clear the alternator.
Solution: a swivel-neck housing.

Upper radiator hose will probably need to change, but your vehicle's stock big-block lower hose, should work.

BBC (66-93) Late Serpentine Conversion Instructions

Big Block Spotters Guide (Adobe pdf File)

Gates Belt Chart (Part number and length)

Why you should use a Kwik Performance product:

Properly engineered using OEM reference drawings

Computer tested with FEA (finite element analysis) software

Field tested on shop test engines and in real-world test vehicles

Backed by a no-hassle warranty and return policy

Tech support before, during and after the sale