To sum it up kinda short -- a 383 is a 350 bored .030 with a 3.75" crank (a crank with the same stroke as a 400 small block). A stock 350 has a 4" bore (4.000) and 3.48" stroke, while a 400 has a 4.125" bore; a 383 has a bore of 4.030 and stroke of 3.75". You can build any variation of strokers by changing the bore diameter.
You need a 350 block to start off with. You should take the block to a machine shop and have them dip it, machine it (make sure to tell them you plan to make a stroker out of it so they can machine the crank journals) , and install new cam bearings and freeze plugs. Your best bet for the crank would be to order a 383 rotating assembly (crank, pistons, and rods) from your machine shop, jegs, or anywhere else. You can use a 400 Crank, but it will need to be machined for the 350 block. Next you need to choose the internals, heads, and finally your fuel delivery, and exhaust setup. That's pretty much it.. there's a lot more to it but that's the basics. Good luck on your stroker!
Last edited by Custom95Z; 07-10-2003 at 12:50 AM.