E-street vs Promaxx vs 440 Source

Not to sound like I’m bragging, but A 500hp 440 built using reworked stock heads is a “no brainer”.

But not all reworked stock heads are equal.
They don’t need to be awesome for that level of performance....... but they do need to at least be “good”.

The heads should be done to a level that’s commensurate with the rest of the build.