Last ditch effort for used 318

I have the .450 lift 250° purple shaft in my 81 318 with totally stock short block. I ported they hell out of the heads and port matched the intake and run a stock electronic distributor and orange box. Intake is an edelbrock performer 318/360 and 850cfm TQ carb. Motor pulls real hard but I run manual trans and no tach. I am happy with the motor, maybe you need a hair less cam.