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  1. 454 Motor into 1946 Cadillac ?

    The Classic Cadillac Forum
    Hey Guys new to this community and with Classic Cadillacs. So my dad has a 1946 Cadillac and wants to throw in a 454 Engine and transmission from a 90s Silverado. Wanted to know if anyone has knowledge on what to expect from this swap, and what I would need to alter Thank you for your time .