pump gas compression

[Balaska347]

Ok I thought we were all on the same page here. I'm talking about a 351 windsor stroked to a 408 with some aftermarket heads and cam. Not some special combustion chamber design. Your safe bet is going to be 10.5:1 on pump gas. Call any of the major companies and they will tell you the same thing I know because I did it when I was choosing a compression ratio for my build.

We aren't comparing apples to apples when you say my GSXR has 12:1. Are you going to say it safe to spin the 408 to 13,000 rpm's too .

I don't think you can compare the LS7 either because they are totally different animals. Plus I think the LS7 had years of technology go into it that this 408 isn't going to have.

I'm just speaking realistically. Good luck with the build.

[Silverhatch]

We aren't comparing apples to apples when you say my GSXR has 12:1. Are you going to say it safe to spin the 408 to 13,000 rpm's too .


I'm just speaking realistically. Good luck with the build.

No, but that would be insane! Car will be a weekend beater, cuz with a nitrous snortin' 408 (410, JJ) you ain't "cruzin" it nowhere! I want it to sound "angry"!

[somethingclever]

My old GSXR 1000 had 12.?:1 compression and ran on pump 93.

Bikes can run more compression because of how they are camm'd.

[Rodeheaver's]

my rollback had 21:1 and it would not run on pump gas....lol

[wick]

Bikes can run more compression because of how they are camm'd.

Yeah,and the lack of rocker arms allowes them to rev to the moon!!!

my rollback had 21:1 and it would not run on pump gas....lol

HAHAHAH and the redline is alos like 2000 rpm. HAHA