Hey Guys

Just wanted some advice on the .528 purple shaft

would you guys run it straight up or advance it 4 degrees ?

Projected spec's looking for 500+ HP

comp 10:25 need's to live on pump gas.

Edelbrock aluminum RPM's 82cc

Edelbrock rpm intake gasket matched

Its going in a 4 speed 70 Dart .

Rear is 4:10's currently but i have a pumkin with 3:91's and 28 X 10.5 tire

Thanks