too many variables. just post it up i only make 277hp

 

405 total??

 

you dont have any mods to be honest. so maybe 10hp more then a stock 5.3

 

Put mine on a Mustang Dyno a few months ago. 04 Sierra 5.3 liter/G80--3.73s, and mods listed below in Sig.

264 RWHP/280 RWTQ


I was really estimating it to put down about 301 RWHP--Before I found out it was a Mustang Dyno, which I have always heard that the mustang usually shows about 10-15% lower so factoring that in would put me close. I don't have all the specs, but I do know it was a bit humid out.

Oh, and these numbers were with the cutout open.

 

uh oh...
https://www.performancetrucks.net/fo...d.php?t=383829

 

Wow, why are we wasting money on heads, cams, and intakes when all we need is octane booster

 

That stock 5.3L extended cab made more torque than my cam/heads/bolt on 6.0L...........................

*headed to Autozone as fast as possible to retrieve lucas for next dyno pull*

 

You need to look at who is making that rwhp and what they are running in the 1/4 and take it to the track, and see how your numbers compare to those that make about the same rwhp.

 

Just put it this way, if you run 100mph or over in the 1/4, your truck is a BEAST and I will put flowmasters back on my truck.

 

at this thread