HP gain with multi angle valve/seat

PRH said

I guess the beer keg intake and stock exhaust manifolds are no problem then?
Redo the heads, change nothing else....... poof.... 50 more hp?

The point being........ the same level of head rework will not result in the same amount of power improvement on all combos.

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Redo the heads. Depends upon how far you go. 5 angle valve job with 70 degree bowl cut and bowls opened to about 88-90 percent of seat size, chambers unshrouded and last seat angle cut blended into them, and heads decked to raise compression, then 50 hp may not be out of the question.

The old mopar rags used to claim a 50hp increase just swapping a set of stock magnum heads onto an old low compression smogger LA engine.