Forum: Powertrain

What are the stock specs of a stock GMC sirra 2003 5.3l.

HAS ANYONE DONT THIS ON THE NNBS??TO ME MY OLD TRUCK WICH WAS A 2000 5.3 WITH 212/218 CAM HAD WAY BETTER THROTTLE RESPONSE THAN MY RECENT 08'4.8...

So in a few months I would like to get a cam for my 6.0 i just put in. I must say the new power of the 6.0 is awesome, but I know I will get used to...

if the gear on the starter motor is worn, will it destroy the flexplate/ flywheel? i had my starter shimmed incorrectly and it destroyed...

I finally got around to removing the 4wd stuff from my truck (halfshafts, diff unit, front d-shaft). I never use it and it's added weight/ rotating...

Sometimes the the motor will be turning 2100rpm doing say 70mph and then the after 5 miles down the road or just a mile down the road(just depends on...

Do they make a aftermarket transmission pump thats stronger than the factory pump?

I just got my truetrac and motive 410s in and its making noise its like a wining noise. Any suggestions????

Worth it ? As in no burning wires, leaks .. Etc Or just get a cutout where I hand tighten it ? And know it's not leaking

Well I just got done doing the shift kit and installing 2 and 4 gear servos. Problem I am having is that if I put it on D the truck takes off on 2nd...

i stripped two bolts that hold the retainer for the cam.

Got the rest of the kit hooked up today. Had a braket made for my WOT switch. Thought I was ready to rock. When first hooking it up had a ton of...

my check engine light keeps coming up right after i drive it hard and says lean banks 1 and 2. But if i drive it nice it never comes up what could be...

wondering cause the mass airs are molded into the air box now like the one on my denali.i heard guys just cut it and its just the mass airs from the...

So I am on my way to work today and get stuck behing two people going 55 in a 70, two lane highway.:argg:The person in the slow lane inches ahead of...

I am going to change out my trans and put in my Circle D 2500 stall tommorow. My question is do you guys think it will be ok to drive without a tune?...

when i would be driving the truck i could here a wining noise,that you had to listen to hear it,i thought it mite have been the pump maybe making...

i have a old 89 chevy regular cab shortbed sitting in a pasture and was wondering how hard is it to put a 6.0 and 4l60e tranny into this beast? would...

which set of headers is the best bang for buck and power? how much time does it take to install them?