Any idea on what year or vintage the SBC has? Casting numbers on the block and heads would also help.
Impeller size? What pump for that matter too.
Comp cams and Edelbrock have some Dyno charts on their most popular cams, which, along with an impeller chart can get you in the right direction.
Just picking a cam with huge duration isn't going to be happy with stock (severely inadequate/smog) heads, but there are some factory offerings that are better than others.
I've ran as much as 235 degrees at .050 on a big block with logs and snails, with no reversion.
For a stock 350, the Eddy performer works pretty good, .420/.442 lift, and pretty tame.
Summit has a few inexpensive offerings, like the 1103, 1104, 1105, etc.
If it's a roller block, there might be a chance at decent compression, and Melling has a few rollers available and affordable.
While logs and snails and not the best for performance, they're not nearly as bad as single exhaust on an 85 Camero or 85 Chevy pickup.
My short recipe -
96 suburban short block, stock roller cam.
Crappy but functional swirl port heads, 64cc (Compression ratio is 9.2-9.3 to 1)
Eddy performer rpm intake and 750 Holley, GM HEl. 1.6 roller tipped steel rockers.
Sprint car headers, with water added.
A Berkeley impeller.
55 mph at 4600 rpm, all day long.
Combo is 325-330 HP. It's not a rocket, but reliable as a brick.
Dan'l
