Double Aught

iTrader: (5)

I searched here and on the web and came up with a couple of conflicting opinions. I hit a Mallet Performance link FAQ that said despite what others claim, you cannot port an LS6 intake manifold due to the fact it is plastic. Then, I happened upon an add for Lingenfelter Performance and part of an engine package they offer, specifically says the motor comes with a ported LS6 intake manifold. So, which is it? Has anyone here done it or had it performed on their manifold?

smg267

iTrader: (23)

I do know that it is possible to port the ls6 runners. You can not go as crazy as you can with the Fast intakes though. The LS6 is all one piece. There was a company TPIS that went as far as cutting the snout of the LS6 and mounting a 90mm throttle body on it.

Raptor_WS6

iTrader: (23)

i opened up the snout to accept my 85mm tb, there was no more indent for the oem gasket so i had to make my own

Double Aught

iTrader: (5)

Thanks. Basically, I am thinking about doing a h/c using my or other 241 heads along with the LS6 manifold. I want to keep it looking as factory as I can so when someone opens up the hood, all they will see non-factory will be the headers. I was in communication with Advanced Induction concerning head/cam packages and they said they can really make the 241's work great.

99Bluz28

iTrader: (35)

You can still get the TPIS LS6 90, or send yours in for a conversion.

BOBS99SS

iTrader: (2)

^ you always can get a fast shave the logo off and paint it black,looks just like stock

Double Aught

iTrader: (5)

Things that make you go hmmm.
EDIT: I just read some very exiting info on this manifold. I may end up buying one and go the Q-ship route as suggested above.

smg267

iTrader: (23)

exactly what I am doing with mine!

intenseblue

iTrader: (1)

Cartek ports them and claim IIRC 5-7rwhp

peakspeedshop

iTrader: (7)

Peak Speed Shop ports composite intake manifolds and we specialize in doing the LS2, LS3, LS7, L76 and FAST manifolds. We have the ability to port the LS6 manifold but get very few requests because not many have found gains from having the LS6 ported. We do show great gains from porting the FAST manifold (between 8 and 12 rwhp gain) and we have the ability to paint or powder coat the manifold.

We are running a porting special to LS1Tech members that ends on April 18th. Here is the thread, for those who are interested:
https://ls1tech.com/forums/sponsor-s...y-porting.html

For more information on our porting and powder coating services, go to our web site at: http://www.peakspeedshop.com/