How does cid make power?

rumblefish360 said
I Disagree.
It is a combo of camshaft and valve spring.
The correct combo can spin a 4.50 crank 10K. Or just to 4500 for you RV.

But the 4.50 will need a HUGE cross section intake port, a highly tuned exhaust port and cam timing to get there.

Not even a Pro Stock head can feed that at 10k. So you need to be looking at 9* MBE heads and things like that.

Plus, you’d have to look at BMEP and VE after peak torque.