You are looking at maybe 300hp max with bored 40 over. If you want 500 horse or more you might as well buy a different engine. You will have to upgrade the pistons, camshaft, crankshaft, heads, valve springs, spark plugs, fuel pump, carb, or fuel injection system, connecting rods, and the transmission because the stock transmission will go boom if you try putting 500hp through it. Your best bet is getting a junkyard LS 5.3 or 6.0 with a transmission. Tuning and an ebay turbo can have you at 500+ hp on a reliable set up. Much cheaper than upgrading the dog that is the 350.
500HP? That would require massive modifications--certainly it'd have to be a stroker, and all kinds of tricks to camshafts, intake, carb (or FI) headers, lifters, special pistons and rods-----and then you'd have to strengthen the transmission, driveshaft and differential to handle those levels of torque.
If you want 500 HP, I'd suggest just buying a crate engine. figure around $10,000 for that amount of HP.
http://www.enginefactory.com/500hp.htm
Probably not that much from stock. Boring doesn't increase horse power. Having an aggressive cam, advanced timing, longer/shorter pistons, different style piston, machined heads, exhaust, forced induction (super charger, turbo), nos, crankshaft, those things increase horse power.
0.040 overbore impresses no one that knows anything about engines. Congratulations, you went from 349 cid to 357 cid. You probably have about 170 hp, up from 165 hp.
You are being big joke man, yes?
I have a 1987 Chevy 350 bored over 40 and I wanted to know how much horse power it has. Also how can I get it to have 500 horse power or more
