I know how to do the modification of a 305 to make it a 350, I'm just not sure if it's cost effective. Should I just go ahead and buy a 4-bolt main 350 and start from there? Would it be more cost effective to convert a 305TPI into a 350TPI?

I'm a student so I'm on a limited budget, or else I would just go ahead and buy a 350.

 

you cant just make a 305 into 350. First off the 305 and 350 have the same stroke. If you were to bore out the 305 that much you would hit the water jackets or crack the cylinder walls. Basically impossiable. Just pick up a 4 bolt like you were thinking. I just one on ebay. 100 bucks. And i also one a 2 bolt all machined and ready to go.

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91 RS' TBI 305
mods:
dynomax exhaust, lakewood control arms, gutted cat, pioneer deck, tbi spacer, jet stage 2 chip, K&N four inch element and open element, accel cap and rotor, moroso plug wires, msd blaster coil, bosche +4 spark plugs. Alot more mods to come!!(update 11/01/00 pulled engine
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2001 camaro SS LS1 onyx black, SLP dual/dual center exhaust which brings horsepower to 335hp and 350ftlbs of torque, T-tops, 6 speed, Hurst shifter, cags!, power everything