Big Inch Smallblock

B3422w5 said
Never seen a W5 head go remotely close to 355. For one thing, they flat aren’t big enough.
I can say this for sure, even a good W5 head is more than used up with a serious effort 4 inch crank deal. You need go no longer stroke on anything like that. Those heads were designed for stock stroke 340-360 mills. Not 400+ inch stuff.

I’ve seen someone’s report on them go a bit past 330, IIRC.
Shady Dell? I forget. The W2 if carved to the high heavens will get crazy numbers. IIRC, Dick Landy carved ridiculously huge rectangle ports. It’s porting way beyond normal.

justinp61 said
I've been very pleased with my 4.125" stroke deal. It made peak power at 6750, I normally don't turn it over 7k and it pulls like a freight train..........everywhere!

From a been there and still doing it guy. Thanks for that reply.