i am looking for a REASONABLE machine shop to bore .020 to .030 over on a small block i picked up a lil bit ago -- i tried honing but pitting is bad -- also pressing out/in wrist pins onto NEW PISTONS !! -& touch up crank -- i am lost on this -- it has been a long time since i have had to have this done !! -- i am in hayward wisc - anywhere close would be great ? and what am i expected to pay for this i have heard from $120 - to - $200 just for boring .020 to .030 over ? i have inquired on a ball hone (120 grit) but price for a good ball hone is that !! i realize this is not too technical but i need all help i can get !!!
You are not far from Duluth/Superior, Chippewa Falls/Eau Claire, and even the Twin Cities. Many of the NAPA auto stores have a machine shop and do head and engine work. If there is a Chevy dealer nearby, ask them if they know a quality engine builder. If you are boring that engine, then "touching up" the crank is not a term I would use. Have the shop determiine if it needs to be turned and undersize bearings installed. You also need to have the shop determine how much to bore the engine. Don't buy pistons until you know what that number is. You should let them redo the heads as well or you will have a smoker. I personally would not bother with a 305 since there are so many 350's around that cost the same to rebuild and have more grunt. But that all depends on what the engine is going into.
I'm with Silvertip, no way I'd spend money machining a 305 when when 350's are everywhere and everything between the two blocks will swap right over. The exterior of the blocks are identical if you stay in the same vintage. You will get more performance out of a stock marine 350 than you will out of the reworked 305. (Unless you spend mega money)