DemonSilverado

I have absolutely murdered every other 4.8 Ive raced (about 6 of them). The closest race was a 2001 with a K&N FIPK, ASM headders, dynomax ultra flows...I only beat him by about half a truck.

The performance seems to be there, but the numbers are way off??? Can anyone give me some insight??

My mods at the time of the baseline run were just a Flomaster 40 series (cut out stock muffler and welded it directly in the same place) with a turndown. And thats it...

I love my truck, but I cant figre out why the numbers are so weak???

Help...

FILE

iTrader: (5)

I think you have nothing to warry about. I would care less what the dyno said if I had your truck and spanking other 4.8'e even modded ones.

hyper

hmm thats funny, i say the same thing about 5.3s

FILE

iTrader: (5)

I am sure you have... ....

Slowverado

your numbers aren't to far off from what they should be. A while back Truckin' magazine had a dyno comparisson of two different exhausts on an 02 4.8 and baseline was like 185 with stock everything, and with just a Gibson catback added it made like 192 or something very minimal on the HP side, but like 14 ft.lbs. on the torque side. and when they added a granatelli(sp?) cold air they got maybe another 5 or 6 horsepower at the wheels. You're not to far from where you honestly should be.

Scream

iTrader: (6)

with all mods in sig BEFORE cam...242/251
with all mods in sig AFTER cam...272/262

hyper

dont worry the videos are coming soon

people on this board are just to stuburn to see that a 4.8 can easily beat a 5.3. they dont want to beleive it so they make it sound like its a pinto trying to beat a fukin viper

Deckhand

iTrader: (1)

:p

DemonSilverado

Thanks for the help so far guys.

Keep the info commin. What is REALLY odd is that the torque on my truck was in the 280's. Thats quite a bit more torque than ive seeen on the other 4.8 numbers, but still less horsepower....

I'm just trying to figure out what the oddity could be??

...Also can we not turn this into a 4.8 vs. 5.3 debate, those facts are irrelevent here. The only reason I brought up my races against other 4.8's is simply to show that the perofrmance seems to be there even though the numbers are not. Thanks.

Silvette_02

With my mods in the signature I put down an honest to God 300rwhp and 331 ft-lb of torque.

Runs were made at PowerZone in Charleston, SC. I even had a slight exhaust leak from the driver side headers (yes they're shorties).

Josh Hucks