addicted2myWS6

iTrader: (30)

Ok, here is my situation I have a 408 billet mains, 1/2" head studs, lunati internals w/ diamond pistons. I have two sets of heads siting here, one set will give me 12.5:1 comp and the others will get me right at 14:1. Both heads flow close to each other, so I wouldnt be giving up much flow.

It has a plate and DP kit both stages are pilled for 200 each.

The cam is a high 250's 270's cam on a 113 +2 (hyd)

The car has full suspension and will only be a track car so it will be on race gas at all times.

My question is what compression would you go with and why?

Thanks for any help.

02 BLK WS6

iTrader: (11)

14:1 for every last hp, but the only thing that should go in the tank/fuel cell should be c16 or better.

addicted2myWS6

iTrader: (30)

Thats what I was thinking, but I read some where that some of the big boys were backing the compression down a little bit and throwing more nitrous in it.

Also, I have some Q16 going in it, just to try it out.

Beaflag VonRathburg

iTrader: (176)

Depends on how much you plan on spraying. 14:1 is going to be a massive amount of cylinder pressure with a big shot.

tuff

iTrader: (15)

I would go with the 12.5 comp heads and hit it harder with more nitrous.Your better off with less compression and more nitrous on the stock blocks.Static compression makes it a bit harder to keep the heads down.

tuff

iTrader: (15)

I would also fill the block half way,really locks the bores up from rattling around and keeps them heads down.

addicted2myWS6

iTrader: (30)

Thanks Tuff

That is kinda what I was thinking.

Noyzee

iTrader: (37)

i run 14-1 on my car, but i dont hit it hard. 250-300 is about all i do i might bump it up we'll see.
if you plan on hitting it with 400 in 2 stages i would go 14-1 any more then that 12

ShiznityZ28

iTrader: (11)

12.5 and hit it harder.

Ray@Nitrous Outlet

yep....

addicted2myWS6

iTrader: (30)

Thanks guys, I think I will go with the lower comp and spray the **** out of it.

Hopefully I will join you all in the 8's, probly not as quik as most of you but I am hoping for at least a 8.99 .lol If not I'll blow the damn thing up trying.

99_pewterZ_A4

iTrader: (1)

any news on trmin8r/ sean andersons SS

GueSS Who

I had 12.5:1 last year. I know have 14:1 and it made more power N/A. I plan on spraying the same 500 pills on it. I in fact would like to add another 200 on top of that. I have not had one single problem with head lifting. I also have 1/2 head studs with Diamond pistons and Lunati billet internals. Cometic gaskets. I have a big solid roller 279/292 732/732 on a 114, with BIG Dart heads. Made over 600rwhp on the dynojet N/A.