Lq4 horsepower estimate

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Jan 17, 2018 | 03:56 PM

88bluchevy

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Staging Lane

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From: Norman Park, GA

Lq4 horsepower estimate

i have a 2005 lq4engine with Texas speed prc2.5 heads, comp cam 231/237.614/.621 at 113 lsa cam. It has Holley hi ram intake with ford racing 42lb injectors. Walbro 255 fuel pump. Upgraded trunion kit and ls7 lifters and we figure around 10.7 CR. Just curious as to what y’all may think it’ll make on motor before nitrous.

Jan 17, 2018 | 04:03 PM

HCI2000SS

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From: Howell & Fenton MI

Which PRC 2.5 heads?

Jan 17, 2018 | 04:23 PM

88bluchevy

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Staging Lane

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From: Norman Park, GA

Prc 5.3 2.5 heads

Jan 17, 2018 | 04:44 PM

ragtopz28

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From: Ft. Myers, FL

~450rwhp

Jan 17, 2018 | 04:49 PM

HCI2000SS

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From: Howell & Fenton MI

Ok I have those heads as well. The dyno number can largely be effected by the trans type and type of dyno, so I'll say anywhere from 400-450

Jan 22, 2018 | 09:37 PM

rpturbo

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From: A-Town, Ill side

Quote:

Originally Posted by HCI2000SS

Ok I have those heads as well. The dyno number can largely be effected by the trans type and type of dyno, so I'll say anywhere from 400-450

And location of the dyno, the cycle of the moon, and 100 other things.
OP it should feel pretty stout and make you smile when the exhaust sings!

Jan 23, 2018 | 01:25 PM

wph351

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Will be interested in your results. I'm putting together a SBE lq4 with shaved AFR 205's and a btr stage 3 truck cam. Post up results if you get it dynoed. I'll do the same.