Heads

I've ran ported heads on the last three engines I've built and the cost of the port work was the best money spent on the builds. The heads that were on my 408 flowed in the low-mid 290's before Ryan installed the 2.055" intake valves and were really to small for that engine. A stock Edelbrock head on that size engine is a big choke point on a performance build.

I'd rather have a mild combo with good heads as to have a wild one with junk heads.