pulley #'s ?

[matthew block]

Hey guys. I recently ran across a couple of pulleys in the GM boxes. I was curious what the application was. If any info, thanks a bunch.

# 3770509CE GM powersteering pulley. # 3744043BA GM double groove crankshaft pulley

Matthew Block 34977

[Joe L.]

Re: pulley #'s ?

mathew-----

Both of these pullies have fairly wide application.

The GM #3744043 pulley was used on many 63-66 Corvette applications with base or 300 hp engines. It was also used on 1966 Corvette applications with 327 and 427 with high performance and special high performance AND P/S. It was also used on some 1968 Corvettes with base engines and w/o AC. It is a 2 groove pulley of 6-5/8" OD. This pulley was also used on many other Chevrolet applications from the late 50s to the late 60s. It is still available from GM for a current list price of $31.75

The GM #3770509 is a stamped steel power steering pump pulley used on most, but not all, 1963-74 Corvette applications with small blocks. It was also used on MANY other Chevrolet passenger car applications during this period. It is a tapered shaft type pulley of 5-47/64" OD. It is GM-discontinued, but available in reproduction for about $75.

[matthew block]

Re: pulley #'s ?

THANKS ALOT JOE!!! As always your info is greatly appreciated AND helpfull. Its friends like you guys in the NCRS that help us "corvette beginners" learn more about this exciting hobby. thanks again.

Matthew Block