I recently had my truck dynoed truck has 3.42s an lq9 with a tbss intake, 862s with ferrea 2.02 intake and 1.57 exh valves, titanium retainers, multi angle valve job.. milled .030/ now have a 58cc combustion chamber , also has a tune. Truck is 4wd with a 4l80 an silvy ss rims 275/55/20. Truck made 283rwhp an 351ft lbs. I thought the numbers are kinda low was wondering what yall thought. I believe it was a dynamics dyno, I can make sure later today. Thanks for any thoughts.

 

Dyno should be used to compare numbers after a modification. Correction factors and stuff can skew the numbers.

 

Also that dyno works best for turbo applications. It reads lower than most other dynos out there since its a load bearing type.
I only put down something like 350hp on one with a turbo lq4 on 6psi.

 

Do you have the chart?

 

Yea I do. I always have trouble getting pics on here tho lol. Would my tall tires also make the numbers lower?

 

i was posting from my phone and it sucks to go back and edit the post so i just posted new ones

 

tq looks ok, but hp numbers looks only a little better then a stock 5.3 Even with the 20's and 80, I would have though it should make more. What kinda times have you went in the 1/4?

 

It hasn't ran the 1/4 since I got the 4wd working. I did a 15.3 at 93.8 with a 2.45 60ft lol, that was 2wd easing off the line so I wouldn't spin and before the heads an tbss intake. I would like to be around a 13.5 now, think I am?

 

hp def seems low, are that cam and headers in your sig installed? who did the tune? also, just curious as to what you scr is with flat top pistons and milled 5.3 heads?

 

Some thing is mix matched or the tune is just horrible. That truck with a stock 6.0 should go in the 14's by it self. The obs trucks are lighter then the newer ones also. Hell my truck in the sig went high 14's with a hypertech, lt's, cold air, with the 4.8.