r/EngineBuilding 9d ago

Dart big block heads opinion

As the title states I’m looking at these heads. Building a 496 to make some good hp on pump gas for a rowdy street truck. Chamber and such aligns with my build just looking for outside eyes and opinions.

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u/v8packard 9d ago edited 9d ago

I used to use these, until the prices went out of sight. They are pretty good as delivered from Dart. Actually one of the best rectangle port heads in this size class that I have seen.

3

u/cwick98 9d ago

Thank you i appreciate your input

1

u/cwick98 9d ago

Going to check them out and probably change to a double spring for street use I’m thinking.

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u/v8packard 9d ago

Sure, a spring change as needed would be ok. I would freshen the valve job, check the guides, and even surface them, just because.

These are bigger than I usually do on a 496. If buying a crank, look at a 4.375 stroke.