'72 LS-5 Pulley part numbers

[Tom L.]

Was wondeing if anyone can confirm the part numbers for my crankshaft and waterpump pulleys, there were no refrences in the archives. They are on a '72 LS-5, P/S, A.I.R., and A/C.

Crankshaft pulley: 3921923BM

Waterpump pulley: 3992071BE

Thanks!!

[Joe L.]

Re: '72 LS-5 Pulley part numbers

Was wondeing if anyone can confirm the part numbers for my crankshaft and waterpump pulleys, there were no refrences in the archives. They are on a '72 LS-5, P/S, A.I.R., and A/C.

Crankshaft pulley: 3921923BM

Waterpump pulley: 3992071BE

Thanks!!

Lynn-----


Those are the correct pulley part numbers for your application. In fact, the GM #3921923 pulley remains available from GM to this day. The 3992071 is not.

[Kenneth T.]

Re: '72 LS-5 Pulley part numbers

Was wondeing if anyone can confirm the part numbers for my crankshaft and waterpump pulleys, there were no refrences in the archives. They are on a '72 LS-5, P/S, A.I.R., and A/C.

Crankshaft pulley: 3921923BM

Waterpump pulley: 3992071BE

Thanks!!

Tom / Lynn,

Hi guys!

The first number 3921923 shows as grp 0.659 70-73 454 (exc H.D. and Sp H/Per)

Second one, 3992071 Grp 1.062 Corvette (454) Pully assy.

The first number looks good, the second too if you don't have C.A.C.

Ken

[Joe L.]

Re: '72 LS-5 Pulley part numbers

Tom / Lynn,

Hi guys!

The first number 3921923 shows as grp 0.659 70-73 454 (exc H.D. and Sp H/Per)

Second one, 3992071 Grp 1.062 Corvette (454) Pully assy.

The first number looks good, the second too if you don't have C.A.C.

Ken

Ken-----


He does have C-60. However, the 3992071 is still the correct waterpump pulley. If one has a 1974 with LS-4 and C-60, it's not the correct pulley, though.

[Tom L.]

Re: '72 LS-5 Pulley part numbers

Thanks, I was fairly sure that the pulleys were correct but wanted to be sure.
Joe, I was going to name you in the post but it seems you are the "go to guy" in terms of parts and didn't want to throw more onto your shoulders.

Ken, sent you a PM, you'll understand.