ok, depending on budget and ability you can make those numbers pretty inexpensively in a turbo application. actually a stock syty bottom end will hold 400-450 with a good tuner and not have any issues. when building id go stock 88-93 roller non balance shaft block. balance shaft blocks are weaker due to less material in the block walls. stock crank is good to 650 reliably but have made 800 without breaking. stock block with 4 bolt mains and some block filling should be good to about the same. eagle h beams do well and carrillo makes a higher end I beam set. forged 350 pistons work for these motors je being strong, light and available off the shelf. a custom turbo cam is your best bang for the buck. stock head gaskets are plenty strong when used with arp hardware. use 96= vortec heads and have the stock intake modified to fit them. if I was building a budget motor, id use stock block with 4 bolt conversion, quarter fill, eagle rods, je pistons, custom cam (steve morris makes one) , eagle h beams, vortec heads(stock valves, no porting) , lower stock intake modified for vortecs, 60lb inj, turbo tweak chip, pte 62 or 63 turbo. can all be done on a budget if you can do the assembly, and you shop around for parts.
