Got board Friday so we put the little mule on the dyno.

mods are 2002 4.8w 90k
pacesetter lt's with y
airaid mti w/ air box mods.
some other minor free mods and a 24 inch magnaflow muffler
87* swill
and 28* of timing

made 4 pulls 3 in 2nd and 1 in 3rd

2nd best was 254.61 hp@ 5500 and 260.12 tq@ 4800 or so

torque was table top flat from 3500-5200 where it started to fall off
horsepower stayed above 240 from 4800-6400 lol

we pulled it to 6500 just to see where power dropped off and damn i was impressed with how far it pulled even made some ajustments on my shift points because of this.

3rd gear best 258.78 hp @ 5300 and 274.67 ft-lb @ 46-4700
3rd gear pull netted me a 4 hp gain and 17ft-lb, the torque was all over the board, hp was just peak. it did start to get heat soak because of the long pull and i got some kr so thas about all she had in her.

Another side note at peak power the stock manifold is still restictive on a 4.8! map kap went from 97 down to 94 then back up after peak to 97 by the end of the run.

 

What dyno was it?

 

Dynojet

At Xtreme Motorsports