Is 426ci 360 a small block?

rrvolare said
knocking on the door of 630 HP ? if you had full throttle.... at what RPM ?

The horsepower? We'll never know.

It's not a high winder with the lack of cylinder head cross section, so 6,300 rpm.

RAMM said
You must be using SF's hydraulic/water actuator. I ditched that problematic system and went to push/pull cable and haven't looked back. Nice job BTW that is big power to be sure. J.Rob

Hydraulic/water actuator, exactly. And thank you.