Sounds like it has alot of dynamic compression, 10.55:1 with a small cam should build a bunch of low end torque if you can prevent detonation.
The build sounds much like my 505" stroked 440, 10.3:1 compression, mild ported stealth heads, Comp 23-712-9 (XR286HR-10) hydraulic roller cam, Hughes lifters, smith brothers pushrods, 1.7:1 cat stainless rockers (I know they are cheap, but I'm experimenting with them), RPM intake, Holley 770 HP carb, TTI 1-7/8" headers with the 2.5" TTI "X" exhaust. I have the Keisler SS700 (0.68 od) 5-speed on order (since early August), so hopefully in 2013 I will have some MPG numbers, and chassis dyno numbers. Right now the stock clutch slips at WOT.
Almost forgot the rear axle is 4.10:1 with 27" tall tires. With the 0.68 OD, that is 2.79:1 drive ratio in OD.