Penny just lost her dyno virginity

[zebra]

so i went to DBR High Performance's "No Cars Allowed" truck show today & they had Maximum Dyno out there with their portable rig, so i figured it'd be nice to get a baseline run before i get the LTs & cam.

for those of y'all who don't know my specs:

• 99 NBS Sierra 1500 RCSB 4x4
• NV3500 takin' abuse from a stock (for now) 01 LM7
• AIRAID filter & tube
• MellowTone chambered muffler - single 3" in/dual 2.25" out the back
• BlackBear 93 tune
• 3.73s turnin' some 265/75-16s

with the fuss i hear about stock drive shafts not liking to go past ~130mph & the dyno guys said it's best to use the 1:1 gear (4th), i only pulled to 5000rpm



ps - i love how it says i drive a "Serria"

my heart sank when i saw the numbers, but after talkin to a bunch of guys who also dynoed today & have already pulled on other machines before, this one was pretty far off. i noticed that it only showed around 120mph as it was logging when 5000rpm in 4th mathematically equals 126.2mph. another example was a Kenne Bell Lightning with forged internals on 17psi read 520hp today when he'd previously pulled 575hp at the shop when he did his engine work & with the factory blower. that same truck also had a timeslip for 11.76, so i didn't put a lot of stock in the dyno today, but it'll sure show a nice increase after the LTs & cam on a real dyno

care to share y'all's opinions?

[Duct_tape123]

I thought 3rd was 1:1 and 4th was .7:1???

[zebra]

I thought 3rd was 1:1 and 4th was .7:1???

1: 4.02
2: 2.32
3: 1.40
4: 1.00
5: 0.73
r: 3.55

[kyhunter89]

i think he didn;t notice the nv3500....

[PitchBlackC3]

That is one ghetto rigged dyno.

[Duct_tape123]

Forgot you were a 5 speed

[zebra]

That is one ghetto rigged dyno.

you shoulda seen the first truck to roll up there:
2004-ish quad cab Ram 2500 with 8" lift & 39" swampers. the owner was sweatin bullets as the dyno guy pulled it up there


i know, it's a gas dyno, but most of the trucks there were Cummins & they all wanted to run... so they did. that green one in particular only got to around 42psi due to lack of resistance when he normally gets to about 65psi (meth kicks in @ 50)

Forgot you were a 5 speed

[LUC666]

Sounds right on. Before my cam and nitrous I did 250. 285. That was with longtubes and a wait4me mailorder tune. But you willl see a big improvement with the cam and live tune. Good luck hitting 300 hp! But torque is what u want!