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Old 12-15-2004, 03:50 PM
DonCarr DonCarr is offline
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Join Date: Oct 2003
Location: Prescott, Canada
Age: 59
Posts: 242
Default Seeking head porting advice - 318 with 302's

This is a question of "how far to go". Have collected the tools to do the work myself. Stubborn, meticulous and willing to make mistakes (common Mopar traits ?)

Have 318, hydraulic cam (235/0.507), Holley 4412 (2 barrel), cast iron exhaust manifolds, cast iron single plane 318 intake adapted for 4412.

Please resist the temptation to tell me to build a 360 (coming later).

I believe the port size of the old 318 intake may limit the practical size of valves used. Is this so?

Can I cram 2.08 valves in there? Is there enough meat on the short side for porting? Will better low lift numbers mean anything ?

Or is this way over the top for these ports? Should I stick with stock valve sizes or 1.88? Idea is if I have to buy new valves, why not go huge?
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