350 / 350, was a screamer!
Top 350?
Le Mans Master
Joined: May 2000
Posts: 6,493
Likes: 6
From: Bloomington MN
Cruise-In II Veteran
Originally Posted by bobby454
a MOTOR is powered by electric current
I think the LT-5 might be the most powerful 350 built by the factory.
Race Director
Joined: Apr 2000
Posts: 17,676
Likes: 201
From: Who says "Nothing is impossible" ? I've been doing nothing for years.
I put motor oil in my motor and can you imagine a forum name of EngineHead ? 
Anyway a few years ago someone had a list of all the old GM engines and there HP ratings. I lost it on my old computer but it showed all the Corvette engines and their respective ratings in Gross, Net and RWHP and I wish I could get ahold of it again. I was was a real eye opener becasue it showed almost an 45% loss in HP from gross to RWHP in one of the early 454's
Anyway a few years ago someone had a list of all the old GM engines and there HP ratings. I lost it on my old computer but it showed all the Corvette engines and their respective ratings in Gross, Net and RWHP and I wish I could get ahold of it again. I was was a real eye opener becasue it showed almost an 45% loss in HP from gross to RWHP in one of the early 454's
Last edited by MotorHead; Dec 5, 2004 at 01:18 AM.
Drifting
Joined: Sep 2004
Posts: 1,959
Likes: 1
From: North Bend Ohio
I believe the question was "highest horse power rating of 350's in C2's and C3's". Eventhough there were no 350's in C2's the 327 looked a lot more like the LT-1 than the LT-5 did.
BigBlockk
Later.....
BigBlockk
Later.....
Drifting
Joined: Dec 2002
Posts: 1,861
Likes: 2
From: New Zealand
Originally Posted by 79MakoL82
Of course I have to chime in here because all the chrome bumper guys LOVE to talk about their big HP #'s on their small blocks. But one fact that has been glossed over in this discussion only once so far, is that the numbers you are talking about are GROSS ratings.
"Horsepower rating desreases in 1972 were due mainly to a change in the measuring criteria. Previously, horsepower ratings were measured as the 'gross' output of an engine alone. Starting in 1972, ratings were a more realistic, real-world 'net' which included losses from air cleaners, exhaust sytems and accessories" - Corvette Black Book
Although I will concede that the 1970 LT-1 was most likely the most powerful 350 made, I will dispute the 370 HP rating. What I would like to see is a RWHP number on a stock 1970 LT-1, and compare that number to other stock RWHP numbers. That would be a more accurate comparison. For instance, the pre-1972 numbers are without an exhaust system, etc. The 1971 LT-1 was rated at 330 HP "gross" and the 1972 LT-1 was rated at 255HP "net" and that was with a true dual exhaust. A drop of 75 HP! In the case of the 1975 and later models, the L82 was saddled with a 2-1-2 exhaust and a single restrictive catalytic converter. Take the air cleaner, accessory's and exhaust sytem off the L82, and you would have MUCH more favorable numbers than the 230HP the 1979 L82 was given. Probably comparable (the 1972 LT1 was only 25 more HP with a true dual exhaust system w/out cats) to the LT-1 numbers. Either that, or saddle a 1970 LT-1 with the same crap the later engines had to contend with and see what it puts out. That's the only way to compare apples and apples
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Melting Slicks
Joined: Nov 2000
Posts: 2,663
Likes: 3
From: Palm Harbor FL
Originally Posted by standup
It sounds like your suffering from chrome bumper envy......I think you are going to have to come to terms with the fact that the L82 is never going to be considered a high performance engine
I honestly have no animosity towards anyone in this discussion and I love the chrome bumper cars. It just so happens that the pre-1972 engines were all in chrome bumper cars so that's why I refer to the chrome bumper guys talking about their high HP #'s. I apologize if I offended anyone.
Last edited by 79MakoL82; Dec 5, 2004 at 10:47 AM.
