What pistons?

What pistons do I run to use the fastburn heads on a older 350. I heard the flat tops would make the compression to high for the gas we have.

thanks

 

Which heads? Do you have casting numbers and combustion chamber volumes? Lots of heads bouncing around out there.

 

Thanks for the reply, they are 906 heads.

thanks

 

Like Big Chief mentioned, find out the combustion chamber size of those heads. Based on the combustion chamber size you should be able to determine the pistons you need based on your desired comp ratio.

 

they are 64 c.c.

thanks

 

This might help.

http://www.carcraft.com/techarticles/calculate_compression_ratio/index.html

 

I take it that you are using this engine with HEI and a Carb !! If so I'd use dished ones for sure and make sure the ignition is curved right and working spot on !!! >>>>.

 

That's what I needed. Thank you very much.