ok i have a 408 iron block and im building it for boost/turbo cartek says to get the compression around 9:2:1 should i go lower than that?

 

Go lower, why not? Go with 8:1 if you can. There is no such thing as turbo lag with a good setup if thats what you want to know.

 

Depends on how much boost you want to be able to run. It sounds like it's going to be a track/speed setup... You could actually go a half-point to a full point lower if you really wanna put through some boost.. Meth always helps.

If I had money for a setup, I'd go for the street compression... 9:1 or so. You have a good bit of power down-low.

 

its going to be a street/strip car

 

Street/Strip?

I think 8.5 to 9.2 would be great.. Even if you went as low as 8.1, you wouldn't exactly have a dog low-end, since you'll have so many cubes.

 

I went 8.7 compression with -32 cc pistons in my 408.

 

8:5:1 here...Na numbers in sig

 

Can you give some more information on your engine? You can PM me if you wish, but I would really like to know more. You N/A numbers look awesome for such a low compression.

Thanks in advance!

 

Go 8.5.....no reason for any higher. Gives you plenty of room to play with boost.

 

ya, im going with 8.5 in my 408 with the gt55 turbo. what size turbo do you plan on running?

 

Stock PCM?? What YR computer?? Id go lower then 9:1 also.....

Kyle

 

call cmotorsports and ask them to build you there outlaw 408

 

I am in the process of having one built right now, but I was wondering how much mine differed from yours. What heads, intake, cam and exhaust are you running?

 

afr 225 76cc, small 220ish cam, 18" bullet custom exhaust

 

How much power are you planning on making with how much boost? What headers/intake are you running now?

Thanks.

 

stock ls6 intake, phamspeed headers...planning 800ish on pump

 

Thanks a lot! Keep us posted.