View Full Version : BBC HEAD QUESTION!
Is there a bbc head that I can put on a stroker that has Aries dome 13:5 pistons to lower the comp. enought to run 92 octane? It is a fresh motor Dart Big M block etc. that is a torque monster and I don't want to take it apart to change pistons. Right now it has Dart 320 heads that flow 369 @ 800 lift. Its an excellant setup that I just can't get sold so I might as well run it on the street. This is my first BBC I always ran Pontiacs and this has been quite a learning experiance, and $$$ too! Any advice /help would be appreciated.
zipper06
09-10-2010, 07:40 PM
AV gas or racing gas , the only way you can do t.
JMO
Zip.
bixblk
10-05-2010, 08:28 PM
I agree
mtmaye
10-20-2010, 05:58 AM
you could run e85 has its pros and cons but i believe you can run it with high compression
coloradoracerguy
10-22-2010, 07:38 PM
No, the only way to get the compression ratio down far enough to run it on pump gas is to change the pistons. I'd shoot for a max of about 9-9.5:1 with aluminum heads. That will allow you to get a bit more aggressive with the timing. You can go higher, but quality of fuel becomes an issue. Just my $.02