Build me a motor for my Cig 20

[klaw]

well I have bought a HP500 it has been bored .030 over it is apart.

What would you put in it for 550-600 hp
It for my cig 20 I have pistons crank and rods all in good shape I know I will need some porting on the stock heads

would like to be normally asperated and with a carb as I dont have $ in budget for Fuel Injection

On my bullet I have Barry Grany 850 Marine Demon Carbs and would like to stay with that for a carb.

Cam Recomendations?

Klaw

[Chris]

AFR 325 heads with partial CNC is going to give you the most bang for the buck. Get Bob Madara to do a custom cam for you and you're there.

[klaw]

with porting can I get ny stock heads to flow enough

[Tom A.]

Ron Potter just turned my friends pair of 525's into 630's. I don't know what he did but he could probably do the port work and give you the part info to build up yours if you are doing it yourself.

[Chris]

The porting would cost more than the AFR's. Plus, you lose the aluminum advantage on upped compression.