Upgrading a 1965 Mustang to Electronic Fuel Injection (EFI)

For those with more complex engine swaps, such as installing a later-model 302, additional considerations arise. The later roller cam engines require a compatible distributor gear (steel or bronze, never cast iron) and careful attention to harmonic balancer imbalance (50 ounce vs. 28 ounce) . Serpentine belt drives from later engines can often be adapted without body modification, but timing covers and water pump configurations may need attention .
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