I assumed cleaned up, ported 452 heads.
The 408 builds I have looked into would likely require aftermarket heads (meaning $$$$) due to the crack issue with stock Magnum heads and the fact that you'd have to get the Magnum heads machined for LA-style intakes anyway.
Have you priced out rebuilding and porting stock iron heads , nevermind choosing the worst design possible ...
an OPEN CHAMBER stock iron head ... it would be cheaper to buy a set of E brock heads than to redo iron heads.
I think you misunderstood me.
I meant ported 452s as in three-angle valve job at the most... hence just cleaned up.
Sorry for the confusion.
I think you have misunderstood then what the meaning of PORTED is, a 3 angle valve job is NOT porting.
It's still going to cost a lot to even do a basic rebuild on the CRAPPIEST head known to man, the open chamber, big block Chrysler head, there are stock small blocks heads that flow better.
