Same heads, cam, valve spring, t/b, displacement, pully size, exhaust, intake, intercooler, stall, tranny, gearing and tire? change any one of those and then some and it can change your boost. But comparing the 28 inch slicks to 25 inch street tires is apples to oranges. Jus some food for thought


Dirty

 

so if u were me what would u do this setup
6.0 LQ4 - LT'S,PATRIOT STG 2 HEADS , 231/247 617/623 115LSA PATRICK G SPECED CAM , PRO CHARGER D1, 3.6 PULLEY,TRU TRAC WITH 3.73'S ,3600 PI TRIPLE DISK STALL , BUILT 4L60E,

 

What rpm are you crossing the traps at?

 

to tell u the truth i dont rember cuz i was too cought up into to the a/f and boost gauges but more or less 50some i think cuz i lock up around 100 s the rpm goes back a lil u get me

 

you need to make up your mind you want it fast on the street are fast on the street and at the track.

i would change the cam.

 

well a lil bit of both lol yea im thinkin bout cam swaps

 

Yep I'd run that, maybe a tad smaller cam.... But that set-up looks good for 525~575 rwhp in a truck. I think changing your tire size has a lot more effect on the way the motor revs. try running down the street on the slicks and compare that with the street tires. You may need to change pully size to get the boost you are looking for.

 

I think you need a shorter tire at the track. You want to be crossing the finish line just over 6000 rpm.