1994Vmax

iTrader: (4)

It's not. It's a y pipe with a 3.5" third cat... then it necks to 3" at the valve behind the muffler and if off a crew cab the actual tailpipe is only 3"... not a good setup at all lol.

Vortec350ss

iTrader: (20)

Are the mid pipes any larger than the 5.3? Youre not going to get good flow out of any factory truck muffler. Could you guys replace the muffler and that section of pipe with a big magnaflow to keep noise down?

It sounds like you kind of know you arent going to find a factory option that will work but you are asking us anyway. You will have to make slight adjustments to get what you want...

madmann26

iTrader: (7)

I'm using Borla part # 19131346.

It's a huge case round muffler. Noticeable at idle, nice deep throaty sound when you romp on it.

No rasp either.

silverado78

I ended up going with a true dual setup starting after the right and left bank cats. We did away with the 3rd cat. 3” throughout with 2) Borla ProXS to calm the noise but still keep a straight through system.

smokinlmm

Killer truck! Nice work...

BudRacing

iTrader: (3)

Wow, snappy. You can tell that torque is instant from the RPM movements. If they can get that thing to hook it'll be a real sleeper.

Choda

iTrader: (1)

woah! This is killer. Did you use the original trans that was bolted to the 5.3?

French07

I think you guys achieved your sleeper goal... great work!

FFDP

iTrader: (2)

Transmission seems confused.

Didn't stay in 1st long enough, upshifted, then downshifted again.

M60gov20

iTrader: (1)

Cool truck!