Need some help

If you want to minimize down time, look for a stock short/long block for sale in your area. Pick it up for a good price and take it to a reputable machine shop in your area. Them the you want a bore and hone .030" over, align hone the mains, recondition the stock rods and install ARP rod bolts, install new Mahle lightweight hypereutectic pistons (or forged aluminum if you have the cash), cut/polish the stock crank, balance the rotating assembly, install all new rings and bearings, heat tank and magnaflux the block. Now you will have a stout 355 that can handle a nice amount of power and rpm. New GM pump with GM white spring. New timing set. Now is the best time to install a cam while you are at it.

Take the stock heads and have them milled, 3-angle valve job, new valve seals and new valve springs (quality Comp 918's, PAC 1218's, or Crane 10308's if you are installing a cam. LT4 springs if you are using stock cam w/ 1.6 rr's). Ported heads would be nice, but if you don't have the budget for it, don't sweat it.
Use all new gaskets and maybe pick up some ARP head bolts. You can use GM impala head gaskets to bump up your compression a little.
Cost shouldn't be too bad. Depends on what extras you want to throw in and what power goal you have in mind. I would imagine that you can get the machine work on the block done for 2k or less.
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just look around and read up, slp has some good advice for a budget rebuild, or I think there's someone on here or elsewhere selling GM LT1 shortblocks (brand new) for cheap. I know my friends just both got one each for like 999.99 plus shipping.
I would and actually have done the junkyard shortblock thing. They will be BETTER than a under $3000 rebuilt complete engine. To rebuild an engine that cheap a LOT of crappy parts are used unless it is someone like GM doing the rebuild, then economy of scale kicks in and they can do a good rebuild cheap.
For stock heads, I'd recommend the CC503.
^^^That's usually one of the best ideas. Find yourself a reasonable mile stock short/long block in your area. Then you can install your cam and bolt-ons to that new engine.



