i finally said the heck with it and bought a TSP shortblock 347..yes its cheaper than turning a crank honing a block and buying forged goodies with arp bolts etc.. so heres the build and i am curious what yall think it will make power wise

TSP 347
LS6 intake
80 MM BBK TB
chromoly pushrods
comp lifters
SLP dbl roller timing chain
LS6 oil pump
NGK plugs
MSD wires
Lunati 234/236. .050 .544/.545 @ 110 LSA
re worked stock head..by re worked i mean 3 angle valve job and new seals LS6 springs, new lock and retainers and cleaned up some of the chambers..no major porting just a good cleaning

and how do you tell if your knock sensors are crap? granted my motors apart but i dont know what they cost..where to get them..my old ones are kinda rusty and look like crap..

anyways thanks for your help!! the last combo gave me 385/395

 

Is this an A4 or M6? That will make a 10-20rwhp difference. Guessing by the 60ft that you are a decent hole shooter with an A4. I would say heads and cam around 400 +/- 5-10 either way.
I think that a 3 angle valve job is stock.

 

I would say around 420. depends on compression and if it's a m6 or a4 and what gears in the rear