radonfl Posted February 10, 2008 Report Share Posted February 10, 2008 (edited) I purchased my truck 3 weeks ago and had it checked out today on dyno. It produced 339 hp and 389 tq. Does this sound correct?? I purchased the truck pre owned and to the best of my knowledge it has no mods that it didnt come with. (magnacharger, CAI) This truck is the 5.3, auto and has the corsa exhaust. Im already planning my mods but wanted to get an accurate baseline for starts. The shop that i took the truck to is a popular ford tuner and i find myself questionion the validity of his software. Mainly because i have a stoch 3.6 sc pulley and is puter said i was producing7.5-8.5 lb of boost. I read that my ride should only be pushing 5 lb with that pulley just like my mech guage reads. Any thoughts?? maybe im looking for reasoning for low numbers. for thoughts, ...stock srt8 charger, 382 hp Edited February 10, 2008 by radonfl (see edit history) Quote Link to comment Share on other sites More sharing options...
JF-03-SS Posted February 10, 2008 Report Share Posted February 10, 2008 Sounds like good #'s w/ that pulley. Quote Link to comment Share on other sites More sharing options...
Fireman31 Posted February 10, 2008 Report Share Posted February 10, 2008 I assume you are RWD........those are great numbers for a stock pulley. Figuring the 18% drivetrain loss for RWD, the following is what your pulling off the flywheel..... 339/.82 = 413.4 flywheel HP 389/.82 = 474.3 flywheel TQ Quote Link to comment Share on other sites More sharing options...
xlr82sxs Posted February 10, 2008 Report Share Posted February 10, 2008 sounds about right.. put a smaller pulley on if you're looking for higher numbers. Quote Link to comment Share on other sites More sharing options...
12'SROCK Posted February 10, 2008 Report Share Posted February 10, 2008 sound right to me if im not mistaken they are rated at 390fwhp from gibbs Quote Link to comment Share on other sites More sharing options...
2004gibbstruck Posted February 10, 2008 Report Share Posted February 10, 2008 (edited) Mine dynoed around 325-330 (can't remember exactly)with the stock wheel a couple of years ago. I have the 5.3 auto also. That was at 5psi also. Stock they are rated @395 HP Edited February 10, 2008 by 2004gibbstruck (see edit history) Quote Link to comment Share on other sites More sharing options...
toxic donkey Posted February 11, 2008 Report Share Posted February 11, 2008 those are really good numbers, cant wait to supercharge my 6.0 Quote Link to comment Share on other sites More sharing options...
misterp Posted February 11, 2008 Report Share Posted February 11, 2008 Yeah sounds about right but there is a lot left on the table; sprayed99 had 500 or 525 rwhp out of his Gibbs truck before he bought his TBSS. Mr. P. Quote Link to comment Share on other sites More sharing options...
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