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If I put the 350 heads on it would it have to run premium gas and its a bone stock 400 when I got it it didn't have a cam the bottom end is good but I just want it to have some good torque and I dont want the heads to be the thing that holds it back but its going in a 85 Chevy c20 lifted bout 6 inches it deffently shows its age but I got it as a gift and its my project
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