What if any information is there on production #'s regarding 1970 LS-6 built Corvettes? The Black Book of course shows nothing but it is my understanding that a hand full were built and exsist today. Tell me what you know? Mike #28614
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Re: Production 1970 LS-6 Corvettes??
The option was listed as LS-7 with none ever being released to the public. It was also shown in the AIM. Basically it was a 454 cubic inch version of the L/88Dick Whittington -
Re: Production 1970 LS-6 Corvettes??
Dick and Mike-----
Yes, as far as I know, no LS-6 1970 Corvette was ever even proposed to be built. However, there were a few 1970 engine options that were originally planned but never released. These included, at least, the LS-7 and the LJ-2. The LJ-2 would have been a 454 CID version of the 67-69 L-71.
As originally envisioned, 1970 would have had an engine line-up just about as extensive as 1969----the LS-7 would have been the L-88 equivalent, the LJ-2 would have been the L-71 equivalent, the LS-5 was the L-36 equivalent. For small blocks, the LT-1 would have been added to the line-up, in addition to the L-46 and 300 hp base engines also used for 1969. Only the equivalents of the L-71/L-89 and L-68 would have been "missing" from the 1970 engine line-up. However, even those may have been contemplated.In Appreciation of John HinckleyComment
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Re: Production 1970 LS-6 Corvettes??
Mike,
1970 had a myriad of engine options slated for its model year lineup. An LT-2 was planned to follow in the ZL-1's path, the LS-7 in the L-88's footprint. An LJ-2 was to follow as a replacement to the L-71/L89 and a LJ-1, as a LS-5 tri-power version of the L-68.
You might run across a 1970 LS-6 Corvette, as I was SO determined to own one back in 1987 when I first got into Corvettes, that, after finding out none were built, I made one, a pretty damn correct appearing one. I then started searching for a 1971 LS-6 Corvette, when I determined how rare these brutes were, I AGAIN made one up. I've heard rumors that both cars have been passed off as real, however I have the VIN's and all the documented work done to these cars, so if someone needs information, I can provide it, I wish I hadn't done the changes to these cars, but back then I was younger and didn't know better.
Currently I own two real LS-6 Corvettes.Comment
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Re: Production 1970 LS-6 Corvettes??
Mike,
The stories I have read in several different automotive publications is, that when the 1970 model year neared, and some of the other proposed engines were not going to make it, Duntov and his engineers were still pressing to have the LS-7 as the top engine leading the pecking order of the Chevrolet division, ie Corvette, Chevelle, Camaro, Nova etc. His beloved 'vette would still rank on top with LS-7 at 465hp, followed by LS-6 at 460hp, Chevelle would then get a LS-6 at 450hp. As it turned out, when upper management dictated the proliferation program of weeding out low volume high costly options, Duntov was still holding out for the LS-7, when this didn't materialize for the Corvette, it became to late to emission certify the LS-6 for the Corvette in time for the 1970 model year. First time in history that another division model became the top dog, leaving Corvette to play second fiddle!
As it turned out, Duntov and crew didn't sit still, they tried to re-launch the LS-7 for the 1971 model year, but before they could, an edict came down from upper management (ED Cole?) that all '71's would prepare for low lead, unleaded fuels to be marketed by oil companies soon. This dictated that compression ratios would need to fall back to levels, not seen since 1956! As it turned out, Duntov, Hufstader and others were able to assemble a nearly race ready engine from the parts bin, L-88, ZL-1 & LS-6. The only new item needed for tooling was a domed and notched piston of proportionately smaller size, I believe .095 thousanths height. So was born the 1971 LS-6 with 9:1 compression.Comment
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Re: Production 1970 LS-6 Corvettes??
Dick,
This may be of interest to the C3 guys interested in the never to be released in production LS-7 option. In late 1970, or early 1971, GM released a "Hotline" bulletin to all of the Chevrolet zones and also to all dealer parts dept's called "Power To Burn" and it described the availability of new complete LS-7 engine assemblies, part number 3965774. This was obviously long after the decision was made to hold/cancel the option in production. It also described the reasons that the option was canceled. Interesting reading and if I can find it, I'll scan/post it.
In July of 1973, another "Hotline" was released that included a complete parts list and all of the parts and tune up specifications for the LS-7 engine assembly. I have that handy and I'll scan and post if anyone is interested. (about 7 pages)Comment
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Re: Production 1970 LS-6 Corvettes??
I would like to see that MichaelDick WhittingtonComment
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Re: Production 1970 LS-6 Corvettes??
Ok, Dick. Gimme a few hours to scan the pages and I'll post. (guess I just invented another new word, gimme) I have to be careful with my internet time though. That woman that was going to leave me if I didn't stop messin with this computer is still here. I'm only allowed a set number of hours a day. Guess I showed HER who's boss.Comment
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Re: Production 1970 LS-6 Corvettes??
Gimme. Yer are adaptin' to the South well MichaelDick WhittingtonComment
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Re: Production 1970 LS-6 Corvettes??
Yup, I'm commin roun to the new way of talkin. I think my g-friend has a lot to do with it too because she's originally from N Carolina.
I'm warming up the scammer as we speak.Comment
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Hotline LS-7 *NM*
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Hotline LS-7 #2 *NM*
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Hotline LS-7 #3 *NM*
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Hotline LS-7 #4 *NM*
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Hotline LS-7 #5 *NM*
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