Before I start my motor I am curious about what my compression might be cause I am afraid I can't run pump gas. Here is all the information I can give. I bought a forged eagle crank, 6 inch rods and flat ross racing pistons. I also have the 306 cam that has 1.6 sa roller rockers.

Now my machine shop that put my block together said that they 0 decked my block and I believe he milled it down .019 in order to do this. I guess this is already raising my compression or are the stock pistons already 0 decked and when the new ross pistons went in could they have been lower than the stock pistons so he had to mill the block down to get it to be the same deck? or am I wrong?

I also had my heads fully ported and polished by Lloyd then I took them myself to Trevor Johnson to have the stock valves get a valve job. Now Trevor said he milled them .007 from what I remember. Now I am not sure what the cc of my heads are, they couldn't of changed that much with that small of a milling done to the heads, right?

With this information could anyone tell me the compression ratio or at least tell me if I will be safe with 93 pump gas? Thanks for whatever help anyone can give.

 

anybody? please.

 

350? bore? stroke? 383?

www.smokemup.com look at the compression calc to see what all you need.

 

Oh sorry I went 30 over it is now a 355. I will try out the calculator you gave me if no one can help, well I will try it no matter what, hehe.

 

Crank it on 92 octane and see,ya should be fine after ya break it in.