BBC (94-00) Late Serpentine Conversion Kit with Crank Pulley Adapter - K10544

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
OEM 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 (1994-2000)

366, 396, 402, 427, 454, 502, 572

AC and Alt/PS aluminum drive brackets
off of a GM Truck 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.

View the Gates replacement Water Pump: (Kwik Performance
PN 44030).

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.

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 Installation Video (YouTube)

BBC (66-93) Late Serpentine Conversion Instructions (pdf)

Big Block Spotters Guide (Adobe pdf
File)

Gates Belt Chart (Part number and length)

Q: What’s the primary purpose of the K10544 conversion kit?

A: This kit consists of a set of adapter plates that allow you to bolt on a factory Small Block Chevy serpentine system to a Big Block Chevy engine. Using these widely available OEM brackets allows for a reliable serpentine setup without the high cost of aftermarket billet systems. This kit also includes a crank pulley adapter that lets you re-use your SBC crank pulley.

Q: Which engines does this kit fit?

A: It is designed for Big Block Chevy (BBC) engines manufactured between 1994 and 2000 with a Gen 5 or Gen 6 harmonic balancer. It works for both standard and tall deck engines.

Q: What donor vehicle parts do I need?

A: You will need the AC and Alternator/Power Steering brackets from a 1996-98 Full Size Truck (5.7L, 5.0L) or a 1996-2013 Full Size Trucks(4.3L), or 1996-2004 S10/Blazer (4.3L).

Q: What type of water pump is required?

A: You must use a reverse rotation water pump from a 1988-2000 454 engine. A standard rotation pump will not work with this serpentine belt routing.

Q: Do I need specific pulleys?

A: Yes. You need a smooth water pump pulley (GM Part number 10085760 or 19418445).  Your 1996+ SBC donor water pump pulley will not work. You will also need a Small Block Chevy (SBC) crankshaft pulley from the donor engines mentioned above.

Q: Are the bolts included?

A: Yes, the kit includes zinc-coated fasteners for the adapter plates and for attaching the OEM brackets. It even includes both 3/8" and 7/16" bolts for the passenger side head to account for year-to-year variations.

Q: What belt should I use?

A: The kit uses a standard six-rib belt. Our included installation instructions will have a suggested length and a Gates part number. Our website also has a Gates Belt Chart with other part numbers and lengths in
case your final configuration is different.

Q: Will the later AC compressor clear BBC tall valve covers?

A:  Some customers have reported “yes”. Others have used washers or spacers to raise the compressor for clearance.