LM7 Sportside Z71

iTrader: (2)

im going to be running boost with cathedral ports and was told the Ls2 intake was the best of the Ls2, Ls1, and Ls6. so now im wondering how much of a gain ill pick up by going with a FAST intake combo? any help would be great, thanks

LM7 Sportside Z71

iTrader: (2)

bump to the top

1999FirehawkLS1

iTrader: (21)

if your running boost stick w the ls2 fast tend to leak

LM7 Sportside Z71

iTrader: (2)

like as leak in the runners or leak externally? thanks for the advice

1999FirehawkLS1

iTrader: (21)

well ive herd the #7 flows more and can burn up that cyclinder and there a 3 piece deal and leak in between them......ive herd of guys running 9s and 8s FI w ls2 and its cheaper

are u running a ls2 on a 5.7 in a f body cuz im about to also

LM7 Sportside Z71

iTrader: (2)

ic yea ive heard a couple things about the #7 cylinder having problems...Im building a TT370 and prob going to go with the ls2 intake after hearing this and i know theyre def cheaper. i was going to go with l92 setup and ls3/fast intake but have been seeing people make just as good of numbers with 317/cathedral port castings and the l92 take a offset intake rocker arm...

LM7 Sportside Z71

iTrader: (2)

this is for a 00 fbody btw.

BIG_MIKE2005

iTrader: (116)

Yes, the LS2 is great for boost applications, but you could also go aluminum with the boost set-up & it'll allow more room for port matching & added strength.

LM7 Sportside Z71

iTrader: (2)

thanks for all the info fellas!

theblur98ss

iTrader: (71)

I went with an LS2 for boost. There are some other things you need to do to be able to run an LS2 on an LS1. I had to goto a holley tb for the throttle bracket. Shim the fuel rails and the MAP sensor mounts different.