Pulley help!
Thread Starter
Instructor
Joined: Feb 2010
Posts: 124
Likes: 19
From: Peoria Arizona
Pulley help!
Can someone tell me the correct part number and sizes for the water pump and crankshaft pulleys for a 65 L79 with no power steering or A/C?
Also, why would some have an idler pulley? was that only for A/C cars?
I assume they were double groove too, ya?
Also, why would some have an idler pulley? was that only for A/C cars?
I assume they were double groove too, ya?
Melting Slicks
Joined: Apr 2010
Posts: 2,142
Likes: 282
2018 C2 of Year Finalist
2015 C2 of the Year Finalist
The chart was made by Mark Gorney, an NCRS member. He developed a series of engine pulley charts for midyears and posted them on the NCRS forum years ago. His charts have been regarded as the most accurate ever put together by anyone (including GM).
I just read that Mark passed away on Tuesday - he'll be missed.
I just read that Mark passed away on Tuesday - he'll be missed.
Last edited by Mike67nv; Aug 20, 2015 at 12:37 PM.
Melting Slicks
Joined: Nov 2004
Posts: 2,311
Likes: 223
From: Temecula CA
Might mention that for the L79, there is considerable doubt that any came with an idler.
I happened to buy a '65 L79 which had an idler. It was questioned by some folks with a lot more experience than I had at the time.
My research led to the conclusion that they were right. The 365hp motor (and FI) had an idler, but the 350hp L79 did not come with one.
Left it on, though..... It got removed by the next owner who took the car up to a regional Top Flight.
