Originally Posted by tclederman
Exhaust code: 3835580 is 50-55/57 COE DD 6 cylinder

Intake code: 3835582 is 50-55/57 COE DD 6 cylinder

They should match each other, and they should work OK on 50+ 235 heads and all 261 heads?


You are one good Detective!!

Thanks!


My Vehicle is a 1960 P-20 "Thriftmaster" Step Van.