360 vs 383

I put a 440 into a '68 Valiant once way before swap parts were readily available as they are today. I love the ease of working on big blocks, but in an A body it takes up every bit of space. Changing plugs is easier if you can cut a hole in the inner fender near some plugs. That little engine compartment got hot too. Headers were a nightmare in that car and the only thing available back then was Hooker fenderwells with very low ground clearance. Only drove it around town, no racing.

I also put a Blueprint Engines 408 (stroked magnum 360) into my '70 Duster/727 with 3.55 gears. Very easy installation with a lot of space under the hood. Biggest issue I had was after changing the torsion bars I had to clearance the Dougs headers. Headers tucked up nicely with excellent ground clearance. BPE rated that engine on their dyno at 465HP. That car wanted to run. I got an honest 13MPG going 70-75 on the highway.

If I had to do it again in an A body, I would go hands down small block with all the aluminum 'trimmins.