Hello all, I have a 2002 Dyna with 95" engine and S&S super stock heads. 79 cc chambers, 1.94" intake and 1.575 exhaust valves.

Currently running Andrews 55 cams at 10.6:1 static compression.

Does anyone have any experience with these heads, would there be any significant gain from having them ported, changing to bigger valves or such, while still at 95" displacement?

Also I'm considering going to 106" this winter using a 4.375" or 4.5" stroke crank. Would that require a different setup of the heads compared to staying at 95"

I have attached the flow numbers for the heads in their stock form.

 

Yes the heads can be ported and gains realized. Using a larger exhaust valve, 1.610 will also help on multiple fronts. There might not be big dyno number gains, but there will be driveability gains, lower engine temps and better overrall efficiency. And you wont have to change anything when you raise you displacement. Though i think there are better cam choices, but that is a personal taste situation in this case.
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