Your dyno numbers?

[JDopirak]

Hey guys I was just curious what kinda dyno numbers everyone got along with your list of modifications. I'm curious to see if my Yukon is on the low end or if it's right where it should be.

Mine is 09 Yukon 110k
5.3
6l80e trans
3.42 gears
4x4
Stock 20" rims and tire size

S&B intake
Ceramic Gibson Shortys
Magnaflow Muffler 12589? The popular one.
Slp resonator delete.
Keep stocking piping as its already 2.75in

Dynoed at 268hp and 291tq

 

[JDopirak]

She was dynoed at complete street performance in west chester pa.

 

[kbuskill]

Just curious, what gear did they dyno the truck in???

 

[JDopirak]

Just curious, what gear did they dyno the truck in???

3rd or 4th. I think they initially did 4th but it got up to 145mph on the dyno so they did the next pull in 3rd. I'll find the actual print out maybe that will tell me a definite answer.

 

[Mickey_7106]

A lot of variables but those numbers look good for a stock truck

 

[JDopirak]

Anyone?

 

[Eric09LTZ]

I have a stage 2 Texas speed high lift cam , dod delete , ls6 springs , ls7 lifters , ls2 timing chain and sprockets . While getting the cam replaced , my mechanics noticed my cam bearings were worn so had the whole motor pulled , all new bearings , pistons and rings and balanced . Made 271 hp and 284 lb/ft . The pull was made with stock 20” rims and in 4th gear on a mustang dyno

 

[swathdiver]

I "dynoed" mine the old school way, took the truck to the drag strip.

It's original with a high capacity paper air filter, BlackBear tune and a Magnaflow Y-Pipe with new cats. That's it. Race Weight was 6,400 pounds. Was burning E85 @ 72% alcohol content (BB tune doesn't alter alcohol tables). Made two runs the last time out, best was 16.45 @ 85.34 MPH. This equates to 307.52 Rear Wheel Horsepower through the traps.

RWHP = Race Weight * ((Trap Speed * 0.00426)^3)

Same setup the year before with original cats that were fussing, 302 RWHP. Alcohol was 52%, had a K&N stock filter, and air temps were the same.

Was always curious about the disparity between dynos and real world pulls and as such, don't know how to compare mine to yours.

Maple Grove or Airport?

I think mine would be a little faster if it were not for the KO2s, they stick to the track like fly paper.

 

[Eric09LTZ]

I "dynoed" mine the old school way, took the truck to the drag strip.

It's original with a high capacity paper air filter, BlackBear tune and a Magnaflow Y-Pipe with new cats. That's it. Race Weight was 6,400 pounds. Was burning E85 @ 72% alcohol content (BB tune doesn't alter alcohol tables). Made two runs the last time out, best was 16.45 @ 85.34 MPH. This equates to 307.52 Rear Wheel Horsepower through the traps.

RWHP = Race Weight * ((Trap Speed * 0.00426)^3)

Same setup the year before with original cats that were fussing, 302 RWHP. Alcohol was 52%, had a K&N stock filter, and air temps were the same.

Was always curious about the disparity between dynos and real world pulls and as such, don't know how to compare mine to yours.

Maple Grove or Airport?

I think mine would be a little faster if it were not for the KO2s, they stick to the track like fly paper.

I will take mine to the track eventually and see what it does . I do have a 1/4 mike gauge on my head unit . Maybe see what that says

 

[992dr]

I'll see if I can find my dyno slip. IIRC it was 287hp and cant remember my tq numbers.
This was with a shift kit jr and FTI 2800/3000 billet stall converter nothing else. Done in 3rd I believe.