True Power

I'm planning the buildup of a blower 355, aiming for 700 horsepower. I'm not exactly sure what size CC heads I should use. I've heard you should use big ones (230CC) and also have heard smaller (210CC). I'm not sure, and was just wondering if anyone here would be able to point me in the right direction. Thanks

89ProchargedROC

Well, it depends on what your planning on doing to your car. if it is going to be a high rpm screaming race only car...210cc is plenty. if this is going to be more of a street car i wouldn't go any bigger than 200cc and probably 195cc would be perfect

The ODB

for that power level I would seriously consider changing the angle on the heads for a straighter shot. That will give you more flow without going extreme on the port volume.
Take a lesson from the new LS1 engine.

It would require some custom work and modification, but you should expect that to get 700hp.

89ProchargedROC

agreed with the angle of the valve...but sometimes that necessitates special pistons and more trouble. one thing you could do is find a set of raised runner heads or high port heads. the heads for my combo have 23* standard head angle but with the raised intake ports and max porting will flow around 340cfm on the intake fully ported

The ODB

good idea