Mailbag: Troubleshooting 440 Engine Detonation at High Altitudes
Q: I own a 1983 Dodge Ramcharger with a 1970 440 engine. The engine is bored .040 inch over, has a forged crank, flat top pistons, and ‘452’ cast heads—the original ‘906’ cast heads were eaten up by unleaded fuel. It also has a Weiand Action Plus intake, a Holley 750 vacuum secondary carb, a
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