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post #1 of 12 (permalink) Old 04-04-2009, 06:00 PM Thread Starter
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LT1 horse power

Does anyone know how true this is? 1993-1995 LT1 horse power is 275 horse. But car craft did a dyno test on the 93-94 and the horse power was 301.
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post #2 of 12 (permalink) Old 04-04-2009, 07:57 PM
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were the cars they dynoed stock, iv heard of stock lt1s puting down around 250-260rwhp i think.

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post #3 of 12 (permalink) Old 04-04-2009, 08:43 PM Thread Starter
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ya stock is suppose to put out 275 car craft said 301
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post #4 of 12 (permalink) Old 04-04-2009, 08:51 PM
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Thats what he said, but did u see it...probably not. Unless the car was an ss....but i dont think the ss was pushing that much back then...

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post #5 of 12 (permalink) Old 04-04-2009, 09:15 PM
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can you find the artical online?

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post #6 of 12 (permalink) Old 04-04-2009, 09:23 PM
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You need to realize the differences in rated HP vs dyno HP. Was this dyno a chassis test or did they have the engine on a stand? SAE net HP or was this gross HP (no accessories)?

If your point is to be able to prove you really have 301 hp, I think you're wasting your time looking at magazines. Go get the car on a chassis dyno and get some real world numbers.

The 275hp rating was pretty honest/close to reality. The LT1 was not underrated like the LS1 was.

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post #7 of 12 (permalink) Old 04-04-2009, 09:41 PM
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+1 ^ your the man!

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post #8 of 12 (permalink) Old 04-04-2009, 10:05 PM
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so its 275 at the wheels? i though the 275 is at crank?

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post #9 of 12 (permalink) Old 04-05-2009, 10:00 AM
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Its 275 to the crank, they might have dynoed a stock engine with a tune, i have seen several threads about the tune on a stock engine freeing up an extra 20ish hp.

But the valid question above is, was it on an engine dyno or a chassi dyno?
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post #10 of 12 (permalink) Old 04-05-2009, 04:20 PM Thread Starter
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Not sure I googled (what is the horse power of a stock LT1)

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post #11 of 12 (permalink) Old 04-05-2009, 06:10 PM
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With just exhuast and cat and all the free mods im sure im close to 300whp if not more.

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post #12 of 12 (permalink) Old 04-05-2009, 08:57 PM
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275 Rated HP at the Crank...period. Like Chris said go get dyno'd. I wouldnt even try until your up in the 400's. Who cares if its runnin 275 to 300 HP 25 hp is a noticeable difference but not that much to concerned with such a difference. Its a valid question though for sure...275 is the answer.


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