Mwieczorek,
Without a flow bench its gonna be hard to guess the potential of the heads you have after you port them. If you can get 175-180 CFM on the intake side and reasonable exhaust flow you should be capable of 350 horse, with the right camshaft, intake, and headders.
I run a Melling tourqe cam in my 89 Firebird, and I have no real complaints. A higher stall convertor would be nice though, as even with a tourqe cam it's kinda boggy below 1500 rpm.
Thats why I suggest Comp, I've had really great luck with them as far as shooting me part numbers, reccomended stalls, and gears. Melling may do the same, but if you look in there catalogs its all pretty dry.
Oreilly Auto Parts used to carry reman Holley 4160's, I think I bought mine at $150 (employee discount) and the average joe can get them for around $200. I'm just throwing that out there.
MBDiagMan,
Far superior may be a little of a stretch. Yes Jesel's rocker arm systems are insanely good, but the factory Ford peices aren't quite the same thing. The shafts aren't the tough and under big lift or a good rev can be damaged.
Also an aftermarket cam may have a reduced cam circle and require some form of a adjustment to the pushrods or rocker arms. I would look for solid lifter rocker arms and lean that way. They still retain the shaft, so no expensive machining should be needed, and you get some adjustability. On Ebay they run about $100 for a set.
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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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