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Bear in mind that 440 pistons prior to 1968 had a lower compression height due to the closed combustion chamber heads. After 1967 the heads all had open chambers and the pistons had a taller compression height. Use later pistons with early heads or vice-versa to up your compression ratio by...
Hey man! I just built a V-8 Vega hatchback with an 8 1/4 that came from my '73 Dart Swinger. The Dart got an 8 3/4. Since MoPar has been using the 8 1/4 since 1964 in everything including pickups, vans, C-body tuna boats and more recently Durangos, Jeeps and Dakotas, I figured it was a better...