blksheep

iTrader: (3)

i have a LQ9 block that i was gonna build a n20 408, but now im leaning towards FI on the 408... wondering what piston i should use. i would like to reuse my heads that i allready have b/c of $$ but i f i can't then guess i will have to change. heads are PP 59cc ls6s...

B18CYA

iTrader: (17)

Check out this site for the size.. pretty sure you will need a custom piston with those heads but from the looks of your sig they will get the job done.
I will be using diamond but their are many reputable manufactures.

http://www.csgnetwork.com/compcalc.html

Mr.MartyStone

iTrader: (12)

Sell em along with your ls6 intake and pick up some L92's. Throw in some stainless valves and a decent spring package and you're there.

Marty

Shawn @ VA Speed

iTrader: (3)

a custom piston is going to be your best bet,i agree with the l92's that would be the best bang for the buck

Websy21

iTrader: (34)

Yup thats what my 408 just had put on them, some L92's with light porting/smoothing and springs, etc. They flow great out of the box, great price too. If you can afford the cnc get em but these were jsut sitting around waiting for a new home.

EPP

iTrader: (22)

How much boost you are going to want to run will dictate which heads to use. Boosting past 16 psi will require a thicker deck surface than that of an oem style of head. Bob

blksheep

iTrader: (3)

haven't really thought about how much boost i want to run. i used to have a fully built 2.2 sr20, that was running 25psi on a 35r. i know i dont need that much on a ls1 but just im kinda in the dark here with the whole FI on a v8 deal. im used to all n/a and n20 v8's...