THANKS JORGE BUT THE HEADS ARE JUST PORTED IM GONA GET THEM MILLED TO GET THE COMPRESSION UP

 

you know what I meant Abiel, lol, I was getting some head, getting getting some head, hahaha!!

 

on my 04 5.3 2wd it made 385 on a dyno jet last summer,5.3 222/224 581 lift cam, full bolt ons, ported stock heads and the stock truck intake, so its possible

 

dyno #'s ain't jack.
got to run the ET imo.

 

the truck used to run consistent 12.60 with out the heads,and a best of 12.50, now that he has the aftermarket heads he has not had a chance to run at the track so yes the numbers back it up, and truck weights in at 4600 pounds i think last time he weight it

 

I only put down 329 hp and 270 tq and ran a best last night of 12.48 so dyno numbers don't mean much to me, but glad to see the 400hp mark for a 5.3, showem what ya got at the track tombs.

 

you dang right, thats what i say!

 

I dont think he has run it with the new heads, but you are right it is a bit of cash...
Dave

 

hasnt ran with new heads

 

We will see if my heads made in difference other than on the dyno, come sunday afternoon. I'm going to be running the exact same way(no weight reduction, and street tires) to see what kind of difference they can make. they made a HUGE difference on the dyno and it feels like a totally different truck now. I ran a 14.00058 @ 93 last time and am hoing for mid-low 13s just from the heads.

but we'll see!