'68 L79 Questions
Thread Starter
Melting Slicks
Joined: Jan 2004
Posts: 3,247
Likes: 210
From: Detroit MI
'68 L79 Questions
Could an L79 be bought in '68 with power steering but without A/C? If so,
1. What water pump pulley would this configuration have used?
2. Was the power steering belt routed over a crankshaft "add-on" pulley, or was the PS belt routed over the second groove of the crank pulley itself?
3. What power steering pulley was used?
I saw a '68 L79 car listed on ebay with PS but no air, and it looked like the PS belt was routed over the second groove of the crank and WP pulleys, and it looked like it had the 3770245 deep groove WP pulley.
Thanks
1. What water pump pulley would this configuration have used?
2. Was the power steering belt routed over a crankshaft "add-on" pulley, or was the PS belt routed over the second groove of the crank pulley itself?
3. What power steering pulley was used?
I saw a '68 L79 car listed on ebay with PS but no air, and it looked like the PS belt was routed over the second groove of the crank and WP pulleys, and it looked like it had the 3770245 deep groove WP pulley.
Thanks
Last edited by 69autoXr; Feb 5, 2009 at 04:09 PM.
Racer
Joined: Jan 2005
Posts: 365
Likes: 1
From: Glenview IL
Could an L79 be bought in '68 with power steering but without A/C? If so,
1. What water pump pulley would this configuration have used?
2. Was the power steering belt routed over a crankshaft "add-on" pulley, or was the PS belt routed over the second groove of the crank pulley itself?
3. What power steering pulley was used?
I saw a '68 L79 car listed on ebay with PS but no air, and it looked like the PS belt was routed over the second groove of the crank and WP pulleys, and it looked like it had the 3770245 deep groove WP pulley.
Thanks
1. What water pump pulley would this configuration have used?
2. Was the power steering belt routed over a crankshaft "add-on" pulley, or was the PS belt routed over the second groove of the crank pulley itself?
3. What power steering pulley was used?
I saw a '68 L79 car listed on ebay with PS but no air, and it looked like the PS belt was routed over the second groove of the crank and WP pulleys, and it looked like it had the 3770245 deep groove WP pulley.
Thanks
I'm sure someone with more detail and smarts will chime in soon enough.
~Rich
Drifting
Joined: Feb 2005
Posts: 1,438
Likes: 2
From: Melrose Florida
Look in your AIM for all the various belt routings. Usually A/C utilized an idler pully, but there were several configurations in at least 68-69 where there was a "captive" belt on the crank, water pump, and an accessory with no method of adjustment.
My '69 435 hp w/PS is one of these. Easiest way for me was to remove the fan from the water pump, and tilt the pulley, walk the belt to the right spot. It is obviously critical to have the right length belt.
Steve
My '69 435 hp w/PS is one of these. Easiest way for me was to remove the fan from the water pump, and tilt the pulley, walk the belt to the right spot. It is obviously critical to have the right length belt.
Steve
Thread Starter
Melting Slicks
Joined: Jan 2004
Posts: 3,247
Likes: 210
From: Detroit MI
I have an L79 '68 with power steering and no A/C, so yes, it was available. The P/S belt ran off the crank pulley itself. My water pump pulley has 2 grooves...one is not being used now as it was originally for the smog pump I beleive.
I'm sure someone with more detail and smarts will chime in soon enough.
~Rich
I'm sure someone with more detail and smarts will chime in soon enough.
~Rich
Thanks
Racer
Joined: Jan 2005
Posts: 365
Likes: 1
From: Glenview IL
~Rich
Thread Starter
Melting Slicks
Joined: Jan 2004
Posts: 3,247
Likes: 210
From: Detroit MI
That would be awesome Rich and I would really appreciate it. I will pm you my email address.
Anybody else have an original L79 with PS and w/o AC? I'd really like to see some pulleys.
Thanks
Last edited by 69autoXr; Feb 9, 2009 at 12:14 AM.
Instructor
Joined: Dec 2007
Posts: 171
Likes: 0
From: Palm Bay Fl
I have an L79 '68 with power steering and no A/C, so yes, it was available. The P/S belt ran off the crank pulley itself. My water pump pulley has 2 grooves...one is not being used now as it was originally for the smog pump I beleive.
I'm sure someone with more detail and smarts will chime in soon enough.
~Rich
I'm sure someone with more detail and smarts will chime in soon enough.
~Rich
My L36 is the same way
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Team Owner
Joined: Jul 1999
Posts: 26,545
Likes: 46
From: Huntersville NC
Here you go... You want the diagram top right; That is power steering with no A/C (edit.. whoops sorry, that's not the one for L79.. )
For completeness, here are the rest...
For completeness, here are the rest...
Last edited by PRNDL; Feb 22, 2009 at 04:39 PM.
Le Mans Master
Joined: Jan 2001
Posts: 6,743
Likes: 1,385
I looked into this L79 w/ AC when I added AC....
If you look at the diagram above you will note that there isn't an option shown for L79 + AC + PS....
What I ended up doing was buying the forward-most pulley for the crank and putting on a regular 327 pulley on the PS Pump w/ a home-made spacer. Not the best, so I'm planning on just spacing the whole PS pump forward and putting the L79 PS pulley back on.
Here's the pulleys I used:
According to my corvette log, the L79 Power steering pulley (deep)(GM)is 3834720.
The double water pump pulley is 3995641 and
The single groove forwardmost water pump pulley for the smog pump is3883235.
The forward most single add on pulley for the crank is 3916385.
I did not record the double-groove crank pulley number.
What I ended up doing was buying the forward-most pulley for the crank and putting on a regular 327 pulley on the PS Pump w/ a home-made spacer. Not the best, so I'm planning on just spacing the whole PS pump forward and putting the L79 PS pulley back on.
Here's the pulleys I used:
According to my corvette log, the L79 Power steering pulley (deep)(GM)is 3834720.
The double water pump pulley is 3995641 and
The single groove forwardmost water pump pulley for the smog pump is3883235.
The forward most single add on pulley for the crank is 3916385.
I did not record the double-groove crank pulley number.
Last edited by carriljc; Feb 22, 2009 at 01:45 PM.
Thread Starter
Melting Slicks
Joined: Jan 2004
Posts: 3,247
Likes: 210
From: Detroit MI
Thread Starter
Melting Slicks
Joined: Jan 2004
Posts: 3,247
Likes: 210
From: Detroit MI
