Knight-Z06

im planning to buy a lq9 427 for my z06 , im gonna run with my prc 227's for now but plan to get some new heads , which of these two do you think would be better for racing on both street(in mexico of course) and track , which would give more power?

gonna run E85 and high compression
mods in sig as well

DietCoke

iTrader: (18)

LS7 heads are a little better, but the intakes are a lot better.

litle88

iTrader: (20)

What size are your bores?

Knight-Z06

4.065

Knight-Z06

better than a ported fast 102?

ps. i read your 429ls3 build thread with the ls7 small bore heads, bad *** power!! im trying to get similar results , any help would be appreciated

02sleeperz28

iTrader: (26)

Good question; I would like to know as well.

DietCoke

iTrader: (18)

I meant the LS7 port shape allows for better intake manis.

Knight-Z06

got it , thx

87silverbullet

iTrader: (11)

I would go with the LS7's also. Alot of power potential in those heads.

litle88

iTrader: (20)

Then your good, I'd run those Ls7's too!

Diet has the FAST 102 iirc, the 102 mm TB will definitely help you.

Maybe he'll sell you his lol?
Chris do I get a finders treat? Lol

litle88

iTrader: (20)

Then your good, I'd run those Ls7's too!

Diet has the FAST 102 iirc, the 102 mm TB will definitely help you.

Maybe he'll sell you his lol?
Chris do I get a finders treat? Lol

TVWilkes

I agree the LS7's are a little better. If someone wants to spend the extra money for the LS7 intake and valve train then I would go with the LS7 setup. The LS7 setup will be better down the road when they decide to upgrade to a larger bore engine.

Knight-Z06

thanks guys , LS7's sound bad ***
ill start looking into an ls7 intake as well

Sales4@Texas-Speed

iTrader: (4)

I am with these guys, the LS7s have the potential to make some pretty good power on that type of motor.

DietCoke

iTrader: (18)

It sold the day after I listed it for sale. Can't wait for the hi-ram to get here.