Hi guys I got a 9 inch deck with a 4 inch Mopar performance US foraging I also have a set of W8s coming from Ritter CNC ported With titanium valves i’m using a 598 intake with a 1050 dominator I understand I could take the crank over to Marine crankshaft and have them re-grind it. I know it’s a big arm my question is what do you believe the Engine speed has to be for the W8s I was thinking somewhere around 78 to 8000 RPM. If I was to de-stroke it How light would I have to go to make it spin mind you I am thinking of using just regular Scat H beam rods I know the Mopar performance crank is a little on the heavy side Just putting it out there because I know you guys are done this way more times than I have

I shift mine about 72-7500. I use Molnar 4.125 crank. It's a bracket motor and made about 920.

What is the heads minimum cross section? If they were Craftsman Truck heads, they would turn them at around 8500 on a 358 from memory.

Do you think the Heavy 4 inch arm. Will RPM high Enough to use The potential of the heads?