Which Intake Flow's More?

**spookyz28** · 05-07-2007, 08:03 PM

I have the Weiand Aluminum intake. I know that it can be ported out. My question is does the Weiand intake flow more than the Composite LS6 intake "STOCK FOR STOCK?" Another question I have is that I heard you can port the Ls6 intake. How is that possible with out screwing the intake up?

**408WS6** · 05-08-2007, 09:44 AM

I've heard that the LS6 > Weiand, but thats just what I heard. I don't know for sure if its true or not. As far as porting the LS6, I don't believe its worth the time/effort. You probably won't gain much.

**danziger** · 05-08-2007, 11:46 AM

The two intakes will flow about the same from every comparison that I have seen. I've never seen anybody porting LS6 intakes with any degree of success, but I'm sure you could port the Weiand to flow a little more.

**slims00ls1z28** · 05-08-2007, 12:23 PM

Car craft tested all the LS manifolds a while back that were on the market with and engine dyno. It went like this Big Ugly (truck manifold)> FAST (not the 90/90 the smaller first one)> LS6 > LS1 > Wieand. This was on a 100% stock engine. They said the Wieand would do better with a cam than the LS1 but for a 100% stock engine the Wieand was bested by just a standard LS1 intake.

**musclecarguy** · 05-08-2007, 12:33 PM

i just bought a book called dyno-proven gm ls1-ls7 performance parts and in here, for the ls1, the best intake was the BBK SSI intake (which has a 80mm tb) and it gained 27hp and 23 ft-lb (not to the wheels) the second best i think was FAST which gained around 20hp

**408WS6** · 05-08-2007, 06:26 PM

Originally Posted by musclecarguy

i just bought a book called dyno-proven gm ls1-ls7 performance parts and in here, for the ls1, the best intake was the BBK SSI intake (which has a 80mm tb) and it gained 27hp and 23 ft-lb (not to the wheels) the second best i think was FAST which gained around 20hp

I hope that is true. I've been waiting for a metal intake to come along that performs as good or better than the FAST. The price is good on that intake (BBK) as well. I've been snooping around at the "other" site, and their still scratching their heads also. Not many people have results on the bbk yet..

**slims00ls1z28** · 05-08-2007, 07:43 PM

The BBK wasnt out on the market in the test group i mentioned nor was the FAst 90. I'd definately like to get a copy of that book though.

**SSwt00SS** · 05-09-2007, 06:35 AM

Originally Posted by musclecarguy

i just bought a book called dyno-proven gm ls1-ls7 performance parts and in here, for the ls1, the best intake was the BBK SSI intake (which has a 80mm tb) and it gained 27hp and 23 ft-lb (not to the wheels) the second best i think was FAST which gained around 20hp

what? im sorry im calling

there is no way that a heat soaked intake would make more than an all composite intake such as the FAST. now, it is not said if that is the FAST 90 or the FAST 78 intake. also no way that only a 2mm differnce would make any heat soaked alum. intake far more superior to even a FAST 78. now, would it gain more than the Ls6, perhaps, but that would be at the top end...

http://www.tpis.com/plog/index.php?o...Id=14&blogId=1

now that is an article that i find extremely interesting...