351w with a c4/c6

[TrickStang37]

wanting to know if the flexplate is the same for running either tranny. Im buying a 351w with a c6 and want to swap it for a c4. so is it the same?

 

[bnickel]

no, the flexplate will be different. the c6 uses the larger 164 tooth flexplate and has a different bolt pattern for the converter.

 

[TrickStang37]

well i know the 351w with a c4 uses the 164 tooth too, so teeth number doesnt say much in this situation. anyone know for A FACT that 164 tooth C4 flexplate is different than the 164 tooth C6 flexplate on a 351w?