Would port matched heads with 2.00 intake and 1.57 exhaust with comp cams bee hive springs work on a 4.8 with just a tune, intake, exhaust. If so, what kind of power could be expected from these.

 

plenty of otherplaces to spend that money before you need heads IMO.... but if you are dead set, you are gonna have to watch the combustion chamber size... and then piston to valve clearence, then pushrod length LOL... it will turn into a vicious cycle. start with more bolt ons. and a cam...

 

+1
I agree. What casting are they?

 

I will have to check the casting numbers. I am only getting these because a guy wants to trade them for my lowering kit.