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Originally posted by chymos ok, this has probably been asked a million times, but search is broken
what casting numbers should I look for for a 350, from best to worst, and where do the various aftermarket heads fit in the best-to-worst listing?
I will just touch on the relatively modern heads dating from the 80s onward.
The nicest factory castings that have a reasonable size combustion chamber and do not need milling are the 083 L98 castings. There are aluminum Corvette castings of this model, as well.
The nicest that will require a specific manifold are the Vortec castings. Thus they actually cost at least $200 extra.
The cheapest are the 305 castings, the 081, 416 and 601 castings, which can be had at the wrecker in good shape for $25 to $50.
You can port and polish both the L98 and the 305 castings to outflow the Vortecs. It will require enlarging the intake valve on the 305 castings but that is not terribly expensive. Follow the link at the end of my sig for a free how-to on the subject
__________________
1986 CAMARO SPORT COUPÉ
5.0 Liter 305 hp
Hooker 2460 Shorty headers, mandrel bent 3" exhaust
Walker Quiet-Flow muffler and dual 2 1/2" pipes
Edelbrock Performer intake with 1406 600 cfm carburetor
Ported and polished 305 "601" heads à la F-Bird'88
305 HO dual snorkle aircleaner with K&N filter
Crane PowerMax 260 camshaft (.427 - .454) and lifters
Proform HEI coil and module, MSD cap, rotor and 8.5 mm Superconductors
700R4 with TransGo Stage2 shift kit and Derale 12000 lb. gvw trans cooler
3.42 gears, KYB Gas-A-Justs and Z-28 front and rear anti-sway bars
Goodyear Eagle HP (200km/h) 225x60R15s on 15x7 styled aluminum slots
T-Tops, A/C, tilt, cruise, variable wipers, power steering, brakes, windows, locks and rear hatch
Alpine CDA-9827 4 channel AM/FM CD-MP3 receiver with Pioneer and Rockford-Fosgate speakers. _ _ _ _ _ _ _ _ _ _ _ _ _____________ _ _ _ _ _ _ _ _ _ _ _ _ Yea verily, and he sore smote the smog heathens from his smallblock Chevrolet, even from the air pump unto the converter.... Book of Todd 3:05 Regardez mon coupé formidable ici!!! http://www.thirdgen.org/rides/index....ew&rideid=8338
They don't even compare the Pro Vortecs are much better.
__________________ LT1 headed LG4 305 beast! Comp Solid lifter XS-262-10S, 1.6 Roller Rockers, 10.2:1, Holley 4160 600cfm, modded Weiand 7502 intake to fit LT1 heads____ Custom cylinder head cooling. Weiand 8208 Short Water Pump____TH-350 3 series 3.73 with 2 series posi and spacer____ Hedman Hedders 1 5/8 headers and Y-pipe 3in Exhaust, Dynomax 3" Bullet muffler ____Moroso Ultra 40 Wires ACCEL HEI Super Coil ____Competition Engineering 3120 Bolt-on SFC's____Homemade: Wonderbar, solid tie rod sleeves, Aluminum LCA and Panhard Rod with spherical rod ends, alternator and PS bracket, Strut tower brace, and Decoupling torque arm with telescoping link.
3000lbs
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