Ever heard of a ZR1 Corvette?
LT5 Maybe? No?
Didnt think so you are just talkin out your ass?
Yea i think so.
They have DOHC just like mine.
They were based on the LT4 head cfm flow and basic design but are DOHC
What do you think I got the heads off of?
DOHC heads dont make more HP as Pushrod 2 valves
But, they do make more usable torque throughout the power band especially around high rpms.
So anything else?

And yea the 78mm is a bit small but it was the biggest i could order based on the LT5's upper and lower intake beacause the intake ports on the head are unlike any other SBC.