Will a 350 Chevy flex plate work on 250 ci 6?
No, a 350 Chevy flexplate will not work on a 250 cubic inch straight-6 Chevrolet engine. They have different bolt patterns and diameters. The 250 inline-six uses a smaller diameter flexplate with a different bolt pattern than the small-block V8 (350). Using the wrong flexplate could cause serious damage. You'll need to find a flexplate specifically designed for the 250 inline-6.