Re: GM V-8 engine families

Posted by Mark - IN. on October 17, 2004 at 21:59:51 from (152.163.101.7):

In Reply to: Re: GM V-8 engine families posted by Can't even use my name on October 17, 2004 at 17:19:20:

Well, my neighbor owns a '68, I was a kid when he bought it new. It most definately has the word "Stingray" just behind the open ducts to the rear of each front tire, right where have been since the day I saw him drive it home in '68. The word Corvette is nowhere to be found on the car, nor will you find it in the GM parts books from back then. I don't know anything about the Sting Ray or Stingray emblem, but sure does say "Stingray" on that car. Is a beautiful car, is parked right where his '57 Chevy sat for years, until his wife totalled it out one day on the way to the beauty shop. Prior to that, he really only drove each one on nice Sundays, a mile or so, then would polish them up and back in the garage, next to each other. The '57 is gone, but that '68 is still there, and it says Stingray, and only Stingray on it.

As far as '83s being available, or not available to the public, I wouldn't know. I'm not a real big fan of Corvettes, just some of the inovations, and the 60:40 front to rear weight ratio was the driving force behind the Mark IV, which I love.

As far as the L88 goes, was available in '68, but used closed chamber aluminum heads. In '69, combustion chambers were changed to open. The open chamber was a vast improvement in design over the closed, but still no match in design for the Chrysler Hemi "head" - not motor, "head". And in '69, Ford came close to the Chrysler Hemi head with the head they used on the 429 SCJ, just wasn't dished out enough, but valve placement was right on the money. Don't remember the compression ratios of the L88s, but believe were in the 11's for closed, 12s for open. Neither was a slouch, nor was the ZL1 all aluminum 427, developed to save weight in the Corvettes on road courses. There was also an all aluminum 454, either the LS5 or LS7, don't recall which, but was intended for the same purpose. The real monster street motor that chevy produced wasn't even available in the Corvette though, the year was '70, and it came in the Chevelle as a cast iron block, aluminum head 454 (LS6), and was rated conservatively at 460 or 465 HP, although am sure it was much more. In '71 (at least), the LS6 was still availble, but de-tuned for smog. In '70, although still strong runners, the hoodline of the Corvette was dropped an inch or so, so the intake manifold on the 454, was also lowered because of the hoodline, decreasing available space for the plenum, basically de-tuning the motor. In '70, chevy's muscle car was the Chevelle, not the Vette, and chevy never produced a stronger muscle car before or after that LS6 Chevelle, no matter what any Corvette type thinks, says, or writes.

If not mistaken, in '68 the 350 was only used in the Corvette, or Stingray, or whatever it was called, but no others passenger cars. I think in those your choice of small blocks were still the 327, or 307 which replaced the 283. The 327 went away for '69.

It's been a long time for me, and have forgotten plenty.

Follow Ups:

• Re: GM V-8 engine families Can't even use my name 06:03:02 10/18/04 (2)
  • Re: GM V-8 engine families Mark - IN. 17:44:09 10/18/04 (1)
    • Re: GM V-8 engine families Can'e even use my name 20:45:54 10/18/04 (0)

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