An honest measured 10.2:1, the biggest Thumpr hydraulic flat tappet cam (LOL) HV oil pump, 063 closed chamber heads. Cam is 6* advanced. I did that because the duration is pretty fat.
I have a vintage Edelbrock twisted Torker2-O for it and a 3310 750. WIth a BIG tube header, it'll make 425HP fallin outta bed. It'll be a real hoot. I love the bottom end torque the big Chevys have.
