That's a lot of info you posted and must have been a lot of work.
They're iron Genesis blocks. 4.31 is a common bore size and I think the next is 4.375. Didn't want to take it that big on the first build though. I should have had both blocks taken to that bore size.
For the 482, I think I'll start with the first cam like you suggested and see how it goes. Won't have to rev too high with that one and doesn't lose much compared to the others according to your calculations. It's a pretty small cam and with 110* LSA, should behave quite nicely on the street.
I did run those combos also and the 482 like the smaller 256/264 cam according to Descktop dyno. I'll email you the charts that show HP and torgue from 3000-7500 in increments. It was pretty close peak HP but way more at 4000 and up in the midrange.
I'll email you tonight.
68 Cougar XR7 street and strip car, 428 4-speed, all steel full interior, 10.69@127.4 1.51 60 ft
