What happened, Corvette?
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What do you mean? Those were the LS6 cars.
If I was an astronaut I would like the dash read out I see, 1970 is my first year model Vett I ever drove.
I never knew there was such a this as a "460 hp" Corvette back then .
I never knew there was such a this as a "460 hp" Corvette back then .
460 HP was the Corvette only LS6. It was the 454 rated at 460 horsepower. The LS6 in the Chevelles were 450 horsepower. I think the engines were actually the same, but since the Corvette had to be king, Chevy rated it more.
Back in 73 I had a 70 350-370hp. I remember the floor board in that thing would get super hot. Damn I wish I had that vette now.
That was the LS7 version, which supposedly never made it into production. IIRC it had aluminum heads and a different intake. I remember reading an article about it in Hot Rod when I was a kid. I think it dyno'd at 600 hp.
Negative. The LS7 never came in a production car. It was an over the counter only engine. The LS6 was the 450/460 HP engines. The LS6 had iron heads.
This... Ls7's were nice,ramp up to a L88 spec..(That's a weapon,as well as the aluminum version, the ZL1...)
Actually, when looking the cars up, the Corvette seems to have not been offered with the 450 OR 460 HP engines. The highest HP rating I can find was the 425 HP LS6 454 in 1971.
Funny that in 1970, the 454 in the Corvette was rated at only 390 HP, but the Chevelle LS6 was rated at 450 HP. Now that I think about it, I know why. The Corvette's hood could not clear the Chevelle's high rise intake. I don't know what changes were made in 71, but obviously there were some.
Funny that in 1970, the 454 in the Corvette was rated at only 390 HP, but the Chevelle LS6 was rated at 450 HP. Now that I think about it, I know why. The Corvette's hood could not clear the Chevelle's high rise intake. I don't know what changes were made in 71, but obviously there were some.
Not mopar related....
True, but that was the intended engine, that never went into production. And yes, they were offered over the counter.
http://www.ehow.com/list_7617778_gm-1970-ls7-454-specs.html
Several stories as to why they weren't produced, one being they had a problem with the aluminum heads, others because of insurance, and emissions. I remember reading an article in Hot Rod about both engines when I was a kid.
Quote, not in relavence here...
My ex boss,buddy & head porter,has a fully ported set on the shelf...,He declines to run them,on high H.P. mills(think 650 on up,N.A.. (Don't recall why ,I'll ask him...)
Rusty, you are 99% correct.1970 was a gray area with insurance companies and what not.So automakers bent the truth with specs. My brother has a 70 LS6 Chevelle bought new.It came with a "Low Rise" aluminum intake with a 780 Holley.His car is a "Day 2".On the second day after you brought the car home you changed the intake, carb, removed the smog pump,installed headers and Cragar SS wheels.With the Edelbrock "High Rise" and 850 double pumper you no longer could use the stock cowl induction air filter housing.My understanding is the same as yours that the Corvette's advertised HP was 10 more than the Chevelle even though the engines were the same.Not that this has anything to do with the discussion,,Another strange thing about Corvette is in 1973, Black paint was not available.
The 390 horse motor in the '70 Corvette was the hydraulic lifter LS 5.They didn't have the LS 6 emissions certified in the Corvette in time for production,or something like that,so the Corvette didn't get the LS6 till '71.
ir3333
Well-Known Member
so...what was the real horsepower of the famous L88 ?
..i have read 500+
..i have read 500+
Sure it went into production. Just not in a car. I remember WELL into the 1980s that you could still buy one from PAW. They musta had a boatload of engines, because they offered all kinda cool stuff. Even with aluminum blocks. I am quite sure there are still some untouched LS7 engines in crates out there.
That sounds about right. I love stories like that.
That's probably spot on. I knew that was a big jump from 390 to 425 or 450. I was lookin at it like huh?
To me, the LS5 was the better, more reliable street engine.
Not to argue Rusty, and yes they did go into production as an over the counter crate motor, as I stated before. I was 17 in 1970, and should have read my text books like I did the car mags. I read articles on the LS7 motor, and saw it listed in sales brochures at the time. Several reasons were given as to why they were never available in a car, but it's anybody's guess as to what the real reason was. Emissions, insurance, corporate politics, etc. Who knows? It was intended, just didn't happen.
95teetee
Well-Known Member
not as much as the real horsepower of a Boss 429, I'll bet.
44070dart
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429 was a dud street engine rated at 375 HP easily had more but not very streetable ...428 much better street engine .. it was never intended to be any good on the street it was their NASCAR engine and they needed to build production cars to satisfy NASCAR race rules .. worth a lot of money today for there rarity
But the 427 Ford was better than the 428 or 429. IMO
Fisher
Old Guy with a Cool car.
Here is your answer 11.73 vette to a losing 12.12 Cuda. but both cars run 118-117 mph so that should give you n idea of how much real HP they are making.
[ame="https://www.youtube.com/watch?v=OceLAaBeIok"]1969 Corvette L88 vs 1970 Hemi Cuda - YouTube[/ame]
[ame="https://www.youtube.com/watch?v=OceLAaBeIok"]1969 Corvette L88 vs 1970 Hemi Cuda - YouTube[/ame]
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