Seeking a Cam recommendation for a 393 with 4V heads

what do you calculate your static compression ratio at?

4vandproud posted:

what do you calculate you static compression ratio at?

Is not it better to do the opposite, define the dynamic ratio, choose the camshaft, then deduce the static ratio?

tomato / tomato. either way, you gotta start somewhere

i get 9.75"1 with std swag inputs

hydraulic or mechanical lifters Peter?

Mechanical lifters 😘 

The flat top pistons have a single relieve for one valve. 

So its not exactly “flat top“ 

Thanks for your help.

I mill the heads a little bit. 

So I would say 10:1 compression rate with a thin gasket . Engine should do about 520 hp . 

The most important ratio is the dynamic ratio , not the static one. You must choose this ratio (George recommends not to exceed 8:1), then, depending on the angle of closing the inlet valve of the camshaft that you choose, you will deduce the static ratio and finally the amount to be milled on the cylinder head.

There are many Excel files that make it very easy to calculate all these values, if you want one ===> PM

All ways are not equal, there are some logics and others that are not.

So ,I found a cam. 

Static compression ratio will be 10:1

Its a Howards hyraulic roller lifter cam.

What do you think ? 

Lobe 112 

Lift .594 and .611

What do think about Howards parts ?

Nice quality ?