HP estimate for mild 340

340 .040 over
externally balanced cast crank stock 3.31 stroke
windage tray
stock rods
Diamond forged pistons
360 J heads with 2.02 and 1.60 valves cleaned up bowl blend
10 to 1 compression
Erson TQ50 Cam
Duration @ .050 228 intake 235 Ex
.472 lift on both intake and exhaust
110 Lobe center
degreed to 105-1/2
stock 1.5 rockers
Stock 340 cast iron intake
800 CFM thermoquad

I dynoed at 346@4900 HP and 388TQ@4500 at the flywheel

I figure I am giving some up to you in your higher lift cam and better intake manifold, even though my compression ratio is a little more....I can post my dyno sheet if you would like