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Feb 5, 2009 | 05:50 PM

RickLowpez

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From: Wasco, Cali

heads numbers

just got the truck off the dyno jet. we put the tsp 2.5 5.3 heads milled 2 59cc.the truck has really woken up alot .the tq is very nice.will scan it soon 402.45 rwhp and 372.67 tq on my 08 5.3 full bolt ons

Feb 5, 2009 | 06:03 PM

GMCtrk

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From: Dallas

This is the first NA 5.3 I've heard of breaking 400 rwhp. Damn!

Full mod list?

Feb 5, 2009 | 06:15 PM

$D_reks{5.3}'s Avatar$

D_reks{5.3}

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From: Bako

Damn rick congrats..those are some awesome numbers.

Feb 5, 2009 | 07:32 PM

bluecajun5.3

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From: Breaux Bridge, LA

congrats on the 400+ mark for the 5.3!
what size cam?

Feb 5, 2009 | 07:50 PM

dlt76028

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From: Crowley, TX

Quote:

Originally Posted by GMCtrk

This is the first NA 5.3 I've heard of breaking 400 rwhp. Damn!

Full mod list?

there's been a few.. mostly nnbs

Feb 5, 2009 | 07:52 PM

bluecajun5.3

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From: Breaux Bridge, LA

Quote:

Originally Posted by dlt76028

there's been a few.. mostly nnbs

never heard of em, name a few...

Feb 5, 2009 | 08:03 PM

nickpc82

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From: Stockton, Ca

Those are some damn good #'s, congrats. First 400hp n/a 5.3 i've heard of too.

heads numbers

heads numbers

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