Help with SB2.2 block

[user-9274568]

Anyone know when GM revised the SB2.2 block, which way they changed the lifter angle. I think it was 3 degrees, but I need to know which way. THANKS

Chad

[user-9274568]

I think I found my answer, I was hopeing someone could confirm.

Intake- same as SBC (41 degrees)
Exhaust- 3 degrees out (44 degrees)