First was Pontiac in 1967, with Chevrolet following in 1970. You may think that two engines essentially made by the same company, which are both called a 400, would be the same engine. That is not ...

Therefore, the Pontiac 400 was made as a high-performance muscle car engine, while the Chevy 400 was primarily used on pickup trucks.

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The original 400 engine under the hood probably starts and drives properly, but without a thorough inspection, you can't even tell how much work the engine received. A 1969 Pontiac GTO convertible ...