A 348 block with a 4” crank is a great option for making 500hp. 430-440 cubes there. Or, a 3.76” crank puts you at 400-410 cubes. Even a set of iron small port (333, 817, 147) will make 1hp per cid. In a 3500# car with a good holeshot, that’s deep 12’s @ 110mph. Cylinder heads are the key though, and I’ve been amazed at how well small port iron W heads work. Have not tried big port heads yet. Looking forward to building an engine with some 690’s or better.
I remember seeing Travis make some passes a couple years ago at MoKan in his 62 Bel Air. Granted, the car is really light (lexan, glass hood, no interior) with 4.56ish gears, small converter, etc. but that car was running bottom 11’s at about 120 with a 430” 348, and a pair of 690’s with minimal porting, and a stock 881 dual quad intake. Healthy flat tappet cam of some kind.
X2 on compression. Makes the engine so much more snappy having 10:1+
I remember seeing Travis make some passes a couple years ago at MoKan in his 62 Bel Air. Granted, the car is really light (lexan, glass hood, no interior) with 4.56ish gears, small converter, etc. but that car was running bottom 11’s at about 120 with a 430” 348, and a pair of 690’s with minimal porting, and a stock 881 dual quad intake. Healthy flat tappet cam of some kind.
X2 on compression. Makes the engine so much more snappy having 10:1+