LS3 I need some advice on rebuild

[snappytravis]

I have a ls3 that I plan to rebuild and install a magnuson sc on it, My question for the men smarter than myself is? If i do a stroker kit in it should I install a blower cam or use stock one? Will stock heads work fine or do they need different valves or springs? Cylinders are scored and are probably repairable without boring, so should I just use stock crank and rods and upgrade to a good set of wiseco pistons? It is going in a 69 camaro pro touring style car and I would like to keep the reliablity as well, Do the supercharged stroker engines hold up pretty good,
Thanks for your help

[LUACE]

Few questions: do you need a rebuild or are you looking to increase HP? What HP range are you looking to achieve? Personally, if I would rebuild an engine and use a SC and a bigger cam, I would upgrade the valves and springs. The fact is if you stroke and bore out your engine , you will be putting more stress on the engine, and making it less reliable. The last thing you want is to take shortcuts and have a valve drop or something else break on you... The little things can cause a whole lot of expensive damage so I vote on upgrading what you can, especially since the engine is already apart.

[snappytravis]

Hey bud, thanks for your input, I am thinking 600-700 possibly, I would like stroker motor and pretty much exactly what you are talking about I see they suggest replacing the exhaust valves, have you any experience with ls3 engines personally or just from researching them? what have you done if you have, thanks again

[~STOLEN~]

a low compression 408 would scream with a maggie on it....that would be a great all forged enternal platform for a blower
the thing is..... the rotating assembly cost is the same from a 370ci to a 454ci....now the 454 will put out 6-700 na......strap a maggie on it and you will never get TRACTION lol
budget will detirmine the size of the stroker......either way you need the heads worked.....your stuffing more air through there and they need to flow as much as they can....with as little resistance as possible... but at a minumin
forged enternals
ported heads w/bigger valves
blower cam for sure
fuel system