What would it take to make 1.44 lbs-ft per cid ?

Newbomb Turk said
There is no real ideal anything. Especially building engines. There are plenty of rules of thumb ****. But that gets you close.

The general rule (NA) is get the biggest intake you can, fit the exhaust valve and then deal with it.

You can spend time, effort and an assload of money to try and develop a formula of those ratios, but it will only matter in that specific application.

This is what I know. It is settled unless arguing is what you do. Not YOU specifically. You in general. I think you can figure that out.

I get there's no overall ideal, it's all a series of compromises, I guess by Ideal I mean more in the general sense.

Newbomb Turk said
I know the exhaust port on most of the stuff we deal with is way too big. So is the valve. You’re kinda stuck because shrinking a valve for a Chrysler Pcar head is near impossible. It’s certainly impractical.

So you deal with it.

I've heard many say they'd sacrifice exhaust valve for intake valve, and hear of making the exhaust side of the cam smaller cause too much of the intake charge is going out the exhaust.

Newbomb Turk said
It’s hard to change cam timing to help the big port and valve, especially when the engine wants more exhaust duration but if you give it more you’ll kill a bunch in the middle of the torque curve for a minimal gain in hp.

The W2 has a port on the big size, but I think using a 50 degree seat I can shrink the valve down to 1.500 and have a better shape. Because shape is more important than flow.

Your generally thinking W2 or better, I'm generally thinking under that :)