I'm just thinking that 350 is a fairly big number, considering the engine maybe was at 200 factory. Your talking about adding 150 horse to that motor with just a cam change, intake swap, four barrel and headers. Thats a big increase considering it sounds like you want a stock idle.
I don't really like playing the numbers game, its all bogus anyway.
I ported the heads (#187 swirlport) in my Firebird 305", put in a melling tourqe cam, flowtech headers, no cat, performance exhaust, Edlebrock manifold, Holley carb, Accel cap, rotor, wires, coil, deletd the smog and the AC. The bottom end has all new parts and has been bored to 316". I'd bet I'm still only at around 270 horse, and your talking about making about .9 horse per cube.
I think a more realistic figure would be 300-310 horse at the flywheel for that engine.
I'd think all of us would like to see you build the engine, and dyno it though. That way we get some real proof rather than just playing some bogus numbers game.
The heads may be adequate of hitting 350 hp, but I think you're gonna spend some very careful attention to the camshaft, headers, intake, and carb. In fact you'll probably want to flowbench the heads and report those numbers to your cam manufacturer.
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93 Thunderbird 5.0 HO
89 Firebird L03
95 F150 XL
Get ready for the 351 boss build this summer, 4v closed chamber heads, 2.25/1.75 valves, .750 lift, 12.5:1 piistons, wieand tunnel ram, nitrous, I think its gonna roar!
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