1972 BB puly numbers

[Lynn S.]

Can anyone give me the correct part numbers for the crankshaft and water pump pulies on my 72 LS4. Thanks, Lynn Schwebach

[Joe L.]

Re: 1972 BB puly numbers

Can anyone give me the correct part numbers for the crankshaft and water pump pulies on my 72 LS4. Thanks, Lynn Schwebach

Lynn-----

Your 72 should be an LS-5; LS-4 began for the 1973 model year. No matter, though, as the pulleys are the same and as follows:

crankshaft pulley----GM #3921923

water pump pulley--GM #3992071

The crankshaft pulley is still available from GM. The water pump pulley is long-since GM discontinued and hard to find although I think it may be available in reproduction.

[Lynn S.]

Re: 1972 BB puly numbers

Thanks Joe,
I have neither of these. The engine is a 72 LS-5. Thanks, Lynn Schwebach