what about this combo 4 ?
Combo comes from page 39 of the February 1989 issue of Hot Rod Magazine. All four combos use the 383 cu. in. engine with rebuilt GM heads and Holley 750 double pumper. These combos show the difference between some intakes and heads.
Combo 4 uses an Edelbrock Performer intake and a 280° cam. The power and torque numbers are pretty good.
Displacement: 383 cu. in.
Carburetor: Holley 750 double pumper
Heads: GM #441 castings, 76cc chambers, 2.02/1.60 in. valves, pocket ported
Intake: Edelbrock Performer
Camshaft: Comp Cams 280° Magnum hydraulic, with 280/280° of duration, 230/230° of duration @ 0.050 in. lift, and 0.480/0.480 in. lift
Headers: 1 5/8 in. street
Pistons: TRW forged
Rods: 5.565 in.
Comp. Ratio: 9.3:1
MAX HP: 382 @ 5300
MAX Torque: 400 @ 4500