I second the notion that I'd like to know what you put in camquest, I gave camquest a try with a 318 build, and, given the same specs, desktop dyno came out more optimistic. (437hp@6500 vs 427hp@6500/402tq@5000 vs 402tq@4500)
What I plugged into desktop dyno:
Bore: 4.030
Stroke: 4.000
Cylinders: 8
Cylinder Heads: Wedge, Fully Ported, Large Valves
Cylinder head flow:
.2 139/110
.3 194/162
.4 240/184
.5 270/187
.55 278/191
Valves: 2.02/1.60
Compression: 10.5
Carburetor: 750 cfm
Manifold: Dual Plane high flow
Exhaust: Small tube headers w/ mufflers
Cam:
268/276 seat-to-seat
218/224 @.50
106 intake centerline/ 110 lsa
.535/.531 lift
