Quote Originally Posted by RedHeartbeat View Post
I think the fbody/ybody LS1 engines had one style from 97 to mid year 2001 and then they switched all the LS1/LS6 engines to the flat floor LS6 intake. LS2 intake is totally different, many report losing HP running the LS2 intake on a 5.7L and smaller engine since it was designed for use on a 6L engine.
Yes, yes. Good call Gregory.

Quote Originally Posted by ff_jeff View Post
I'm looking for something that will make power up past 6krpms... and that will still make power in a 6.0 with the same setup. I figured SOMEONE has to have tested them before and after????
Well, then that would be the LS6.

Quote Originally Posted by Quik View Post
Ls6 outflows the Ls2

Ls2 is similar to the ls1 intake even tho it has a 90mm opening and on paper it looks to be better then the Ls6 it actually isnt
Repetition of statement. George is absolutely correct.
The LS2 intake would work better with a truck (preferably of 6.0L in displacement) due to the intake runner design to make more torque versus the LS6. But if you want absolute power in the upper RPM range, go with LS6/FAST 90.

Quote Originally Posted by Quik View Post
IMHO there are only 2 intakes out there worth any money or time installing....these are the Ls6 and the Fast90 [ported 90 is tits]

Now for what you want Jeff, if you cant afford the Fast 90 then Port your 78mm tb then run the Ls6 intake

to run the car intake you just need to take the idler pulley from on the Alt bracket and side it over about 3" to the other bolt that is there now. this will allow you to run the car intake with still using the truck accesories.