mej0914

I have did a lot of research on porting or replacing the intake manifold. I have found that it looks like FAST could not make a intake better than the stock manifold. Does anyone know somebody that ports the truck l92 intake manifold?

dirt track racer 81

iTrader: (45)

Why not a Vic jr?

Atomic

iTrader: (42)

Why bother? They are fine stock...

2007chevy5.3l

iTrader: (21)

Yeah its hard to beat the stocker. Even the ls3 manifold don't look like it does any better..

low2001gmc

iTrader: (137)

l92 outflows ls3 (and tbss/nnbs for cathedral). no need to misspend money. it is fine as is stock.

sand man

how about if they were straped on top a 400+ cubes?

low2001gmc

iTrader: (137)

only then would i consider porting as i am pretty sure it would be beneficial. i have a ported l92 but i got it as such so cant complain.

slowswb

iTrader: (5)

whats better to use the l92 or ls3 intake? sorry to thread jack

mej0914

Cool I Will just stick with the ported 90mm tb. I figured the flow was good since fast didn't come out with one.

sand man

I read some where I dont remember , oh yeah ! , tbss forums

some dude tested both, and the L92 was better from idle to 6000rpms

6000+ the LS3 took over , but not by much , I think it was mentioned arround here too