GMT 800 & Older GM General Discussion 2006 & Older Trucks | General Discussion

HP guesses?

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Old May 9, 2018 | 01:47 AM
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From: At the dump with a clutch
Default HP guesses?

It’s going to be till the end of the year before I get my truck on a dyno so any guesses on power number?

Stock 4.8 with a Tvs1900, 2.8 pulley seeing 13-14psi, long tubes, LS2 throttle body and running 91. Tuned by Atomic.
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Old May 9, 2018 | 02:53 AM
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Depends tire weight, cam, meth inj etc. Right setup could go 500's pretty easy id think.
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Old May 9, 2018 | 12:32 PM
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As of now it’s got a stock cam no meth and pretty heavy tires (BFG KO2 285/70/17s). Not sure if I want to cam the 4.8 or buy a 6.0 to start building. Also going to start looking for some cheap take off wheels and lighter tires to play around with.
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Old May 9, 2018 | 12:37 PM
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I have a gauge for that
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425-450rwhp like I said last night
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Old May 9, 2018 | 12:44 PM
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From: At the dump with a clutch
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Hey gotta get as many opinions as possible so I can average them out and get an exact number
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Old May 9, 2018 | 01:07 PM
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Sounds like a nice little setup. Ive wondered about putting a 1900 on my 02. Never done a blower setup and curious how fun itd be compared to the turbo just for putting around big D
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Old May 9, 2018 | 03:02 PM
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I love how snappy and linear the power is. Should help a lot when towing and climbing hills off road.

Kinda debating ether building the 4.8 a bit maybe heads and cam or just going straight to a 6.0.
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Old May 11, 2018 | 03:32 PM
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Trucks dyno low....just keep that in mind
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Old May 12, 2018 | 12:05 AM
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From: At the dump with a clutch
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That’s true I may never dyno it. Numbers aren’t that important to me, however I would like to run it at a track sometime when weather gets cooler.
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