Originally Posted by fast68plymouth
Barring any high rpm valvetrain issues, and assuming all the support systems are operating properly(fuel sys, ign sys, trans, etc), should be easy 10’s.

Should make at least 550hp(STP), so losing 10% for correction and installation in the car, leaves you at 500.
500hp@3500lbs shows 10.78@123.


Forgot to ad some details, thanks for the reminder.
Aeromotive 11203 fuel pump, -8 line to the regulator, -6 to the carb.
MSD 6AL, MSD distributor and coil.
I’m thinking 6500 would be the limit? I’ll probably stay on the conservative side.

Thank you again!

Wally.