ive got a 96 Silverado w/ 5.7 vortec and 4L-60E
mods include 4.10 gears, underdrive pulleys, removed honeycomb from MAF, K&N w/ modified stock air box, jet TB spacer, flowmaster exhaust, hypertech programmer

neway i took my truck to the strip the other nite for my first time and it didn't do as good as i expected... i did my burnout and lined up.
it would launch excellent for the first 30-40 feet than it would stall for a a split second and than go again. this was all in 1st gear. i cannot tell whether it slipped outta gear or not. i had the tranny apart bout 5K ago and everything looked great. i need more tech advice... any ideas???

 

How much fuel was there in the tank? I find that when I have less than 1/4 tankful, and I launch hard, it runs good then coughs for a split second then continues on. I am wondering if its the fuel sloshing away from the pumps pickup??

take care
Hog

 

hog, i was going to say the same thing, lol

 

yep thats what happens to me lol, scared the hell out of me when it did it too.

 

I was thinking the same thing...

 

Does this happen to you NBS(new body style) guys too??? The fuel tank slosh that is.

Its really violent, I would hate for that to happen in a blown or nitroused truck, can you say "lean condition".

Hog

 

yes it does happen with us nbs guys. i have to run at least 1/4 tank.

 

man the only time my truck does the sputter step is when I drive it like a drift car on very low fuel.... never on just a hard launch... I guess that means I'm not launching hard enough...LOL!!!!