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LS1 Horsepower Question

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Old Sep 18, 2005 | 09:23 PM
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Default LS1 Horsepower Question

Think I know the answer but thought I'd confirm. A 2001 LS1 is listed as having 350 hp. Researching on the forum it's apparent this is at the crank. I thought some time ago manufactures were regulated to spec hp at the rear wheels?

1. Is the 350 rating at the crank?

2. If so, what does a stock 2001 LS1 have at the rear wheels?

Thx.

Rick
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Old Sep 18, 2005 | 09:29 PM
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SAE net is at the flywheel, not rear wheels. Prior to net were gross HP ratings which were basically stripped engines with no exhaust or accessories. A stock LS1 will be around 295-315 at the wheels.
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Old Sep 18, 2005 | 10:38 PM
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Default hp

auto's have less hp,stick's more.if you have a stick take 350 and multiply by 17% to get a pretty close # for the rwhp.
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Old Sep 18, 2005 | 10:44 PM
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Yeah, mine's a MN6.
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Old Sep 19, 2005 | 12:11 AM
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Yes - the 350 is crank hp.

Average 270-300 rwhp depending on which type of dyno you are using.

Mark
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Old Sep 19, 2005 | 10:10 AM
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Originally Posted by jessem
auto's have less hp,stick's more.if you have a stick take 350 and multiply by 17% to get a pretty close # for the rwhp.

Actually, the reverse...multiply by .83 for a number close to rear wheel power. Many of the tuners figure manual transmission loss as 15% (multiply 350 by .85) and automatic transmisssion loss as 20% (multiply 350 by .80). These are just rough estimates, however, and you will see numbers all over the place.
Ed
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