C3 Trivia-Engine/Transmission Options
Thread Starter
Team Owner
Joined: Aug 1999
Posts: 30,995
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From: Ontario
Last trivia post for this evening. Wish I could afford one of these. A 1969 convertible. My favourite C3 year. Hope to own one some day. What is the difference between an L36, L68, and an L71. Needless to say I will not get into the L88 mess.
Last edited by Paul L; Nov 29, 2004 at 08:37 PM.
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Burning Brakes
Joined: Feb 2004
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From: In the Beautiful Shenandoah Valley of VA
Originally Posted by 80Xflags
I think they physically cut out part of the fiberglass in the wheel well. 
Don't remember where or which part.
Don't remember where or which part.Steve
Thread Starter
Team Owner
Joined: Aug 1999
Posts: 30,995
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From: Ontario
Steve,
Yes the factory did that trim to accommodate those 255s. I had pics of my 1979 cut factory fender lips but they were lost when my last computer collapsed. So sad to lose memory.
Yes the factory did that trim to accommodate those 255s. I had pics of my 1979 cut factory fender lips but they were lost when my last computer collapsed. So sad to lose memory.
Thread Starter
Team Owner
Joined: Aug 1999
Posts: 30,995
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From: Ontario
lostpatrolman,
It was the width of the spring. TT will recall my memory re C3s but I believe the narrower FE7 spring carried on into the late C3s with the front 1/ 1/8" and 7/16" rear sway bars. That was the ideal combination according to GM engineers. I don't have my C3 reference books any longer to confirm that. Sorry!
It was the width of the spring. TT will recall my memory re C3s but I believe the narrower FE7 spring carried on into the late C3s with the front 1/ 1/8" and 7/16" rear sway bars. That was the ideal combination according to GM engineers. I don't have my C3 reference books any longer to confirm that. Sorry!
Melting Slicks
Joined: Nov 2004
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From: Nevada City California
Paul:
L-36 is 390hp, 427cid, oval port aluminum manifold, Rochester 4bbl, 3/8ths pushrod, cast aluminum pistons, cast iron crank, 2 bolt main block, 10:25 comp ratio. L-68 same as above, except Holley 3x2bbl carb set-up on aluminum manifold. 400hp, 427cid. L-71 is 435hp, 427cid, square port aluminum manifold, Holley 3x2 carb set-up, 7/16's pushrod, forged aluminum pistons, forged, nitrided, chamfered crank, 4 bolt main block, square port heads, 11:00 comp ratio.
L-36 is 390hp, 427cid, oval port aluminum manifold, Rochester 4bbl, 3/8ths pushrod, cast aluminum pistons, cast iron crank, 2 bolt main block, 10:25 comp ratio. L-68 same as above, except Holley 3x2bbl carb set-up on aluminum manifold. 400hp, 427cid. L-71 is 435hp, 427cid, square port aluminum manifold, Holley 3x2 carb set-up, 7/16's pushrod, forged aluminum pistons, forged, nitrided, chamfered crank, 4 bolt main block, square port heads, 11:00 comp ratio.
Team Owner
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From: Sitting in his Nowhere land Hanover Pa
2024 C2 of the Year Finalist - Unmodified
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Originally Posted by paul67
Dear to my heart....What was the rarest engine/transmission combo in the 1967 Corvette? Not the most desired by any means.
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From: Exiled to Richmond, VA - Finally sold my house in Murfreesboro, TN ?? Corner of "Bumf*&k and 'You've got a purdy mouth'."
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St. Jude Donor '06-'10, '13
Originally Posted by Twin_Turbo
No it was not, that system, like the 81 L81 is CCCC which stands for computer controlled catalytic converter, they are not the same.
Actually I think you are both wrong.
The 1980 L-G4 was the first to have computer controls. The computer controlled the timing advance and mixture for the primary side of the carburetor. This was only on the 305 CI engines for sale in California, and from what I understand some of these were also sold in areas of high altitude.
1981 had the same computer in all Vettes. CCC is computer-command-control. I have never seen or heard of CCCC or any type of computer controlling a converter as it is a chemical process that does not require electricity.
1982 was the first computer controlled fuel injection, with the twin TBI unit Cross Fire injection. Not to be confused with the first gasoline fuel injection, which was the 1957 Corvette with the Rochester mechanical fuel injection.