venturing to the other side. Need Suggestions

I swapped in an 86 351w in a 68 once and used the original c4. never could find a flywheel that would fit the convertor and have the right balance. finally just kept the 289 flywheel and welded a 28 oz. weight on it. just make sure it's in the right place. also, if you do use a c4, make sure it's from a floor shift, cause the shifting is backwards on the collum shifts. dave.