ok here is the deal i have a 98 Z28 M6. SSRA intake, Slp lid, Underdrive pulley, Pacesetter LTs, Xpipe, Dynomax Bullets, Hays allumminum Flywheel, LS7 clutch, pro 5.0 shifter, subframe connectors, 17 inch z06 wheels.

i'm going to be purchasing a set of PRC stage 1 Heads with the valve job, and a torquer V3 cam 231/234 111lsa. now my question is should i stick with the LS6 intake manifold or should i get the LSX fast. If i should go with the fast what millimeter should i get 78mm or 90mm?

 

depends on how much money your wanting to spend $1200 or $350 whichever you prefer? more performance with the 90/90 setup but steep price. check out byunspeed's polished intakes they look awesome and have better performance over the ls6 intake and only like high $400 mark i think this one FTW

 

patrick g told me that w/ ssra, lid, and ls6 intake the heads will restrict air flow

until you put a good set of ported heads on your car the 90/90 wont show the gains you think you will get

when you use 90/90 you will need the 85 mm MAF sensor from SLP and the 85 mm lid from TSP for easier fitment

 

LS6

rich boys will come in and tell you to do fast 90/90, but unless they are helping you out with buying it dont listen to them

 

Byunspeed makes their own intakes? Can you give me a link to that? I found the Professional Products one. Is that what you are talking about?

 

I'm pretty sure that's the one he's referring to.