compression or flow?

Dale Davies said
IMHO, deck the block to get a 0 deck height. Aluminium heads let you get away with higher compression.

Not exactly true since you just need the octane not to knock and ping.

Dale Davies said
Then get a water injection system. You can spray in about 50% water volume as what amount of fuel you are using.

50% water, 50% fuel?

Dale Davies said
So if you use fuel for 20 MPG, you can inject half that amount water in addition. Remember that water injection only comes into play as your manifold pressure rises or said another way, vacuum drops.

Manifold pressure and vacuum are two different thing right?

Dale Davies said
The water injection should basically come on about the time fuel enrichment also comes into play. So you are not going to use 1/2gallon of dustilled water every 20 miles.
The quench aids turbulence or swirl in the chamber aiding fast combustion. Better power, fuel economy and lower emissions.
If you get the exhaust valves and seats cut for a 40° seat angle you can probably use a single pattern cam of about 220° @ 0.050" lift. I would look for 0.500" lift. To get that you may need higher ratio rockers.
Just my $0.02 for consideration.

His heads are ported and the best flow starts happening at .500 and better.

mopfried said
As stated before, i have an old SSh-320 Crane cam but im pretty sure i need a different one from what i have learned here. Any suggestions?
I have tooling and can cut the valve pockets larger and deeper if needed.

Sorry, I thought that cam was out of here and a new one is being selected. Since it’s not taking advantage of the ports flow and such.

The only suggestion I can give is getting the most valve lift you can to take advantage of the high flowing ports.