C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Lt4 Power

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Old May 20, 2008 | 04:13 PM
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Default Lt4 Power

Out of interest has anyone dyno'd a stock LT4 engined corvette to find out exactly what BHP it produces?? and top speed??

Last edited by ukpete; May 20, 2008 at 04:23 PM.
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Old May 20, 2008 | 04:47 PM
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Most stock LT4 dynos I have seen are in the 290-305 RWHP area. I can't say about the top-speed though, I would assume the factory rated speed is about right though.
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Old May 20, 2008 | 05:00 PM
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Surprisingly, the power of the LT4 varies from engine to engine. There's a site that lists the power output of several different LT4 engines, all stock and I was surprised at how much the power output differs from one engine to another.

If memory serves, the dyno results are posted on Corvetteactioncenter.com

Jake
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Old May 20, 2008 | 06:11 PM
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I think mine was 296 stock.
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Old May 20, 2008 | 08:29 PM
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Here's a bunch - some stock, some modded:

http://www.grandsportregistry.com/dyno.htm
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Old May 21, 2008 | 12:07 PM
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Mine was 295rwhp stock
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Old May 21, 2008 | 01:16 PM
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I believe that is true with most performance vehicles-maybe due to tolerances and/or how the car was broken in.
My 87 GN was fast, but other stock GNs would take me by a car length to 80mph so I know it was middle of the road fast.
the 95 6MT is something else- would absolutely crush the GN and possibly take your breath away in the process-don't know what's up with this one-asked previous owner about a year after I bought it "C'mon whad you do to it?" Guess the proof will be in the dyno nums
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