Lifted03Chevy

Anyone have a dyno sheet of a stock NNBS 5.3?

BlackVMAX2007

I haven't actually had mine on the dyno, but Justin at Blackbear sent me one about a year ago after my tune for the MAX as I was interested in what I gained and it was like 289-290 hp and tq with just a tune with a run in second gear and torque converted unlocked. ....said something about a load bearing dyno so numbers would be lower than some by about 25 each respectively???? If that makes any sense...doesn't to me since I'm a rookie, but thought I would add. The curves were just about completely flat though. Stock versus tune was up about 25-30 hp/tq throughout the entire range. No other mods.

NGA PLZ

iTrader: (1)

Load bearing is just how it sounds bearing the actual load of the truck and not just spinning a roller. I will bet money these 5.3s putting down over 300 with an intake was on a dynojet. Everybody should post up dyno sheets so we have a better idea of your numbers.

GMCtrk

iTrader: (27)

NGA PLZ

iTrader: (1)

haha o rly?

blklime02

iTrader: (4)

well either something is wrong with my truck or with that dyno..(more likely my truck)
with LT dual flows s&b intake 2500stall 3.42s and tuned by wheatly it made 247rhp about 3 weeks ago..the truck has 120000 on it...the thing still runs stong...havent taken her to the strip in a while..

Kylemsu720

If that was on a load bearing dyno, you can typically add 15% to it, to get a dynojet number. That would put you at 284 RWHP. Would that number be more in line with what you're use to seeing?

Denali Dude

I dyno'd my truck with the 4l60 on a 3600 stall put out 290whp and 355 rwtq

BlueSS

mine dynoed 242rwhp and 310 rwtq with full bolt ons and no tune then with tune it was at 292 rwhp and 333 rwtq when the drive shaft shot out of it the graph looked like the truck was still pulling really hard. I'm still working on putting it back together to see what the final number is once we're able to fine tune it. I'll post my graphs once we're done with it. I believe the dyno is a mustang dyno...

blklime02

iTrader: (4)

i wasnt sure wat to expect.
that was the first time i put the truck on a dyno..