The Great Pumpkin - '71 Duster

Sorry, where did you dyno the engine? Did Glen in oceanside dyno it? I just met Glenn a couple of weeks ago.
The build list.

Here's the combo;

factory 340 block, bored to 4.070, align honed
BPE 4" crank
Scat 6.125 rods w. Chevy journals
King bearings,
Diamond 21 cc dish pistons, 1.457" C.H., .927" pin
CNC ported RHS/X heads by IMM w. 2.02 intake valves
approximately 10.3:1 CR w. Fel Pro 1008 gaskets
Not sure what brand spring but whatever Brian puts on these heads, maybe PAC? Spring pressure is 155lbs. at 1.800 I.H. and 350lbs. at 1.200 spring height
IMM spec'd Comp solid FT 251/259 @ .050". with Hughes 1.6 rockers .585"/.593" net lift installed at 106.
Pro-gear timing chain
Smith Bros pushrods
gasket-matched Holley Strip Dominator intake
Proform 850 74/82, 4.5 PV
vintage '80s MP tach drive distributor
Taylor 8mm wires
MSD 6 AL + Blaster E coil
NGK #5 plugs, .045"
TTi 1 5/8-1 3/4 W2 step headers
Mech. flow Kooler water pump
Clay Smith mech. fuel pump (not used on the dyno)

That's it, a simple iron headed small block. Aiming for 11.0.