Woody...There are a few improvements to the basic 235 that should/could be performed....and a few areas that are critical to getting the most out of your rebuild. Aside from verifying that the engine is a good candidate for the expense of a rebuild, the machine shop can drill and tap it for full-flow oiling, drill your crank for installing a SBC harmonic balancer bolt, drill/tap the front main cap for installing the 2 bottom timing cover bolts from the outside, insure your crank thrust surfaces will give you the proper end-play as well as the same for the cam. The crank rear main seal area may/will need some surfacing if you want to run an upgraded rear main seal.
As I think about it.....you could save a few bucks by having the shop install the lower end and pistons...basically build you a "short block" and you'd be safe as a novice, with plenty of care, to install the head and the other bolt-on components. This and getting it running and tuned will give you plenty of experience and the folks on the STOVEBOLT can help with any little bumps in the road. With that done, you'll know that the bearings are all properly installed, your end plays and ring gaps are correct and that she's make oil pressure when you finish buttoning her up.
There's nothing any more frustrating than to pour your time and money into a rebuild and have to lay on your back and try to figure out why you've got a "knock" or low oil pressure or a few other problems that could take the joy out of your rebuild.
Doing a total rebuild and is a satisfying experience, if you have the necessary equipment and expertise, but it can weigh heavy if you over-estimate your ability and get into a bind. Too me, the peace-of-mind is worth the extra cash you pay the professional.
Dave
