Quote:
Originally Posted by nickmm
i got a 70 el camino with a 350 sbc and its bored .03 over...my question is if its bored that much does it make it a 383?? and can it be a 383 if its stroked? thanks
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No. For a 350, an overbore of .030 adds about 5 cubic inches. So right now you have a 355.
A 383 engine is made by installing the crankshaft and rods from a 400 cid small block Chevy into a 350 block. (they made 400's back in the 1970's.)
The 400 crank has larger main bearing journals than a 350, so a machine shop must turn the 400 crank on a lathe to reduce the diameter of the 5 main bearing journals so it will fit.
BTW a 400 crank in a .030-bored 350 (like yours) will give you 388 cubes (not 383).