This question pretty much pertains to all engines.

If I'm shooting for a little lower compression ratio on a blown 454, would it be more to my advantage to use a flat top cylinder with a larger cc head, or use a smaller cc head and a dish piston. How does it affect the flame travel and performance of the motor.

What are the pros and cons of each method.

I could also post this in the forced induction board if that would help.

Thanks

Nate

 

anyone

 

i think the small cc head and the dish piston, it will keep quench tight and it will center the flame front on the piston rather then how the cc is shaped.

 

This is correct, PHR engine masters contest Ford big block won using this concept in 2003? Yes it was a N/A motor but efficient flame propagation is a common goal for either type motor.The dished piston has more square area for combustion pressure to apply itself to also.

 

The slight dish and small CC will probably yield bette flame propagation. Combustion chamber and piston design will also make a difference.