Engine swap conundrum

If using the the same stroke 383 vs 440 will be within 15 or so cid of each other. With an underbore of 40 - 10 thousand of an inch over a stock 440 bore. Even with a stock stroke a 383 will be within 20 cid of a 408 after overbore.


383 is more than capable engine and with so many made don't know theres not more 383 A Bodies roaming around.

Thats said if your looking to go more than a 4.15" stroke Id stay with the 440 for better rod ratios.

Either way your car ain't stock so numbers matching isn't the biggest deal, build it put under the bench, its up to you.