71 AIR add-on water pump pulley

[Mike E.]

Anyone know a source for the add-on water pump pulley for a 71 LT-1? I've checked all the catalogs I have.
Thanks

[Robert S.]

Re: 71 AIR add-on water pump pulley

There are normally several on eBay, but other sources as well. Should be easy to find. By the way, the pully part number for the LT-1 is 3917234.

[Robert S.]

Re: 71 AIR add-on water pump pulley

Correction: water pump pulley is 3991425.

3917234 is the A.I.R. pump pulley.

[Michael M.]

Re: 71 AIR add-on water pump pulley

Try America's Finest Corvettes in California. That's where I found my AIR pump pulley for my '68.

[Roy V.]

Re: 71 AIR add-on water pump pulley

on page 37 of Doc Rebuild catalog, volume 32, there is a listing for a 71-75 auxillary front single pulley, Part #1063138 and it lists for $65.00.
Regards
Roy

[Mike E.]

Re: 71 AIR add-on water pump pulley

There are normally several on eBay, but other sources as well. Should be easy to find. By the way, the pully part number for the LT-1 is 3917234.

"should be"or "is"? I'm very familiar with ebay, and haven't readily found one, that's why I'm asking if there is another source.
Roy, thanks for the input. I'll follow that up immediately.

[Robert S.]

Re: 71 AIR add-on water pump pulley

Mike,
I just looked. There are 2 right now on eBay.

[Joe L.]

Re: 71 AIR add-on water pump pulley

"should be"or "is"? I'm very familiar with ebay, and haven't readily found one, that's why I'm asking if there is another source.
Roy, thanks for the input. I'll follow that up immediately.

Mike-----


There were actually 2 pullies that are functional for the application. The original AIR driver pulley for 1971-78 small blocks with AIR was GM #3991425. For 1979 a new pulley was used, GM #14023158, and shortly thereafter it became SERVICE for 71-78. The latter pulley is very similar to the original except for, of course, "numbers".

Both of the above-referenced pullies are reproduced by Paul "Goat Hill" Baker.

[Kenny C.]

Re: 71 AIR add-on water pump pulley

Would these numbers also be correct for a 1969 L46 without a/c

[Ridge K.]

Re: 71 AIR add-on water pump pulley

"should be"or "is"? I'm very familiar with ebay, and haven't readily found one, that's why I'm asking if there is another source.
Roy, thanks for the input. I'll follow that up immediately.

Mike, I found three used, originals on ePay.

Auction numbers: 320319848796 (24.99)
350174203241 (34.95)
270304630949 (27.99)

and a 4th one that appears to be a repo for $55.00

Hope this helps. Good luck, Ridge.

[Joe L.]

Re: 71 AIR add-on water pump pulley

Would these numbers also be correct for a 1969 L46 without a/c

Kenny-----


As far as the add-on waterpump pulley, the answer is no. 1969 used a pulley with a 5/8" pilot and 1-3/4" bolt circle; 1971 used a pulley with a 3/4" pilot and 2-1/8" bolt circle. The 1969 add-on pulley was GM #3883235.

As far as the AIR pump pulley, they were different for 1971 LT-1 versus 1969 L-46. The 1971 LT-1 used GM #3917234; the 1969 L-46 used GM #3932458.

[Kenny C.]

Re: 71 AIR add-on water pump pulley

Joe
Thank you for the information now I can start looking for the correct parts without wasting time and money on the wrong ones.