question on compression

87foxstang · Mar 26, 2008

I know this question has a few variables, but I am looking for a general Idea. I will be building my 408 soon It will be over the course of a year or so but still...

I am looking for nasty NA numbers, and was checking out 13.0:1 compression ratio trick flow pistons. With this compression, will I be able to run pump gas(93)

Thanks guys

5spd GT · Mar 27, 2008

Very unlikely...

87foxstang · Mar 27, 2008

thats what I thought

5spd GT · Mar 27, 2008

Aim for 11:1 or less for the static compression.

Then the camshaft will come into play to keep it pump gas friendly

87foxstang · Mar 27, 2008

cool, Ill look around for around 11.0:1 compression ratio pistons then, Thanks guys

Fast63 · Mar 27, 2008

You could do 13:1 with a water injection setup.

enyawix · Mar 27, 2008

You want E85!

people are doing 10:1 and 12lbs of boost with stock timing no retard

that is the same as 18:1!

87foxstang · Mar 27, 2008

haha, i guess ill have to do some more research

Rick 91GT · Mar 27, 2008

To be safe 11:1 or under on 93 octane is where I build most street motors. WIth a 408, 6.2" or 6.25" rod you'll end up with around a 22cc dish piston with a 58cc head. Probe, Diamond and others have shelf pistons that will work....

If you need help let me know

87foxstang · Mar 27, 2008

cool, thanks man. If I need some guidance ill let you know

question on compression

87foxstang

Member

5spd GT

"the 5.0 owns all"

87foxstang

Member

5spd GT

"the 5.0 owns all"

87foxstang

Member

Fast63

New Member

enyawix

Member

87foxstang

Member

Rick 91GT

Mustang Master

87foxstang

Member

Similar threads

question on compression

Member

"the 5.0 owns all"

Member

"the 5.0 owns all"

Member

New Member

Member

Member

Mustang Master

Member

Similar threads

Privacy & Transparency

Privacy & Transparency