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Guess my HP before i go to the dyno

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Old 02-11-2009, 04:31 PM
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Default Guess my HP before i go to the dyno
98 Z28 computer, LQ4 block, stock internals, arp connecting rod bolts. hand ported 243 heads, LS6 intake, hand ported Throttle body. OBX longtube headers, no cats, off-road y-pipe, STS exhaust turbo GTST76, front mount intercooler, Comp 224/224 cam, patriot gold kit. exhaust wrap from y-pipe to the turbo. Racetronix fuel pump plus hot wire kit, rebuilt injectors to 58lbs.

Thinking about a msd boost a pump also
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Old 02-11-2009, 04:34 PM
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you dont say how much boost you plan to run
pretty hard to guess.
power from 1psi vs 10psi will be quite different
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Old 02-11-2009, 10:31 PM
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I just wanna know when it hits full boost and if the dyno was load bearing or not. Just wondering if the LT's and unwrapped exhaust will let you hit full boost before 4500.
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Old 02-11-2009, 10:35 PM
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how much boost? impossible to guess without knowing these things man
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Old 02-12-2009, 10:52 AM
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Originally Posted by pdasterly
98 Z28 computer, LQ4 block, stock internals, arp connecting rod bolts. hand ported 243 heads, LS6 intake, hand ported Throttle body. OBX longtube headers, no cats, off-road y-pipe, STS exhaust turbo GTST76, front mount intercooler, Comp 224/224 cam, patriot gold kit. exhaust wrap from y-pipe to the turbo. Racetronix fuel pump plus hot wire kit, rebuilt injectors to 58lbs.
Ooooh, that part right there is full of fail. Time for some manifolds.
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Old 02-12-2009, 10:37 PM
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Originally Posted by Zombie
Ooooh, that part right there is full of fail. Time for some manifolds.
Yesssssir I wont look back at headers. That will show a night and day diffrance in spool.
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Old 02-12-2009, 10:45 PM
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I guess 527rwhp
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Old 02-12-2009, 11:22 PM
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at least wrap the headers. if you don't want to switch to factory one's
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Old 02-13-2009, 06:53 AM
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Automatic or 6 speed?
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Old 02-13-2009, 08:35 AM
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I say 478 RWHP and a burnt ring land.
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Old 02-13-2009, 08:42 AM
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Originally Posted by jfg455
I say 478 RWHP and a burnt ring land.
I'm with this guy.
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Old 02-13-2009, 12:21 PM
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5psi, automatic, i bought some header wrap. whats a land ring
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Old 02-13-2009, 01:03 PM
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I'm going to say 502rwhp with a good tune if in a dynojet. Didn't see a stall on there though.
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Old 02-13-2009, 01:27 PM
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485 at the rear wheels.
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Old 02-13-2009, 01:27 PM
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Originally Posted by pdasterly
5psi, automatic, i bought some header wrap. whats a land ring
The notch where the ring sits on the piston - not a good thing/area to have burned.

Power? Somewhere around 475rwhp
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Old 02-13-2009, 03:21 PM
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Originally Posted by DVS99TRANS
I'm going to say 502rwhp with a good tune if in a dynojet. Didn't see a stall on there though.
If it has a good tune it won't make a good number on a dynojet because they don't have load cells (they offer them, just never seen anyone have one).
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