Pulleys... Where to start?
Thread Starter
Racer
Joined: Mar 2017
Posts: 250
Likes: 20
From: Boca Raton Florida
Would a stock pulley v belt set up out of a 70 el Camino bolt right up to stock vette 350? I haven't decided if I'll just go full stock or full serpentine. Cost is always an isssue. And if anyone has a complete stock set up with AC let me know. My current set up is like a pile of parts that the previous owner rigged together.
Race Director
Joined: Apr 2003
Posts: 19,352
Likes: 654
From: Tampa, Florida
Would a stock pulley v belt set up out of a 70 el Camino bolt right up to stock vette 350? I haven't decided if I'll just go full stock or full serpentine. Cost is always an isssue. And if anyone has a complete stock set up with AC let me know. My current set up is like a pile of parts that the previous owner rigged together.
3rd gen F Body serpentine systems are easily sourced for a reasonable cost. You'll need a new reverse flow water pump and reverse blade mechanical fan. I believe there's an 'alternative belt route' schematic out there that shows belt routing for a standard flow water pump and fan.
Melting Slicks
Joined: Jun 2003
Posts: 2,802
Likes: 241
From: Niles, MI
I installed the pulleys speced in How to Hotrod Small-Block Chevys. PNs are called out in the book although may not still be available. You'll need to enlarge the water pump pulley ID from 5/8" to 3/4" for the Vette water pump. These are the deep groove underdrive pulleys that were used from the factory on high revving SBCs.
Much cheaper than March.
Much cheaper than March.
PN 3942992 Water Pump Pulley - Fits 1971-and-newer and short-leg water pumps with large hubs NOTE: Must be modified to fit water pump with 3/4" shaft. $45.00
PN 3858533 Small Block Crankshaft Pulley. Two-groove, high-rpm, 6-5/8 pulley. For engines with short water pump. NOTE: Can be used with water pump pulley P/N 3770245 and belt P/N 9433722 without an idler pulley or alternator. $62.49
PN 1970831 Alternator Pulley. single deep groove, for 302 Z/28, 396-375hp. 427-425hp. Part also fits: 1968-1970 Chevelle with 396-375hp and 1968-1969 Camaro 302 Z/28 & 396-375hp, Yenko 427-425hp. 1969 Impala Full Size 427-425hp, 1969-1972 Corvette with high perf 327-350hp, 350-350hp, 350-360hp, and 427-435hp, 427-430hp L-88, 427 ZL-1, 454-425hp, 454-460hp. Pulley measures 3 3/16, 11/16 shaft diameter, 1 groove $36.99
Last edited by Kid Vette; May 7, 2017 at 12:11 AM. Reason: Corrected water pump and alternator pulley PN
Le Mans Master
Joined: Jan 2001
Posts: 6,743
Likes: 1,385
3995641 is the 2 groove water pump pulley on my 68
For my L79 SBC (all were transferred succesfully to my RamJet 350).
Just looked and there's bunches on the flea site for 50 to 75 bucks...why pay more?
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And below is a list of the pulleys on my 68, since I re-read your original posts and you ask for pulleys. Note that mine is a 1968:
PART NUMBERS BELOW for L79 deep groove stuff.....Years are from my records when I got them. That ASL company doesn't appear to exist anymore. In 1991 I added power steering, and in 2005 I added AC from Hot Rod Air.
I use the forward most groove to run the AC.... had to modify my ac bracket to move the compressor forward for lineup since I couldn't find a combo for L79 belt routing with AC (I made AC compressor bracket mod in summer of 2014; I'd been running around with a jury-rigged ps pulley for about 9 years from when I first installed AC).
1991: Power steering pulley (deep)(GM) 3834720
1992: Water Pump pulleys from ASL company; includes 1 deep groove forward smog add-on Pulley, and the 2 Deep groove, water pump pulley.
2 Groove 3995641.
1 groove add-on smog pulley, “235" on receipt, suspect it’s 3883235.
2005: Crank “add on” pulley from Zip. M-3388, 63-68 P.S. Add-On Crank Pulley (Deep Groove) Equivalent to GM Part Number 3916385.
https://www.corvetteforum.com/forums...post1587505152
NOTE 1: and, yes, I still own the 3770245 which I bought for 45 bucks ages ago and don't use.... these pulley prices are ridiculous for what they are.
NOTE 2: If I was doing this nowadays, then I'd probably do the 92 serpentine action.
Just looked and there's bunches on the flea site for 50 to 75 bucks...why pay more?
-----------------------------------------------------------------------------
And below is a list of the pulleys on my 68, since I re-read your original posts and you ask for pulleys. Note that mine is a 1968:
PART NUMBERS BELOW for L79 deep groove stuff.....Years are from my records when I got them. That ASL company doesn't appear to exist anymore. In 1991 I added power steering, and in 2005 I added AC from Hot Rod Air.
I use the forward most groove to run the AC.... had to modify my ac bracket to move the compressor forward for lineup since I couldn't find a combo for L79 belt routing with AC (I made AC compressor bracket mod in summer of 2014; I'd been running around with a jury-rigged ps pulley for about 9 years from when I first installed AC).
1991: Power steering pulley (deep)(GM) 3834720
1992: Water Pump pulleys from ASL company; includes 1 deep groove forward smog add-on Pulley, and the 2 Deep groove, water pump pulley.
2 Groove 3995641.
1 groove add-on smog pulley, “235" on receipt, suspect it’s 3883235.
2005: Crank “add on” pulley from Zip. M-3388, 63-68 P.S. Add-On Crank Pulley (Deep Groove) Equivalent to GM Part Number 3916385.
https://www.corvetteforum.com/forums...post1587505152
NOTE 1: and, yes, I still own the 3770245 which I bought for 45 bucks ages ago and don't use.... these pulley prices are ridiculous for what they are.
NOTE 2: If I was doing this nowadays, then I'd probably do the 92 serpentine action.
Last edited by carriljc; May 6, 2017 at 05:42 PM. Reason: add list of pulleys and link
Thread Starter
Racer
Joined: Mar 2017
Posts: 250
Likes: 20
From: Boca Raton Florida
