Choosing A Flexplate

[Resurrection_Joe]

I'm almost 100% sure that I need a new flexplate, and am going to try and get it on myself. I'm just wondering which brand I should go with. I have a 78' 355 mostly stock. What's the tooth count I need? Thanks a lot!

1978 K20 - 355ci, np205, th400, D44, 14F, 7" of Lift, 36 x 14.5 TSL Radial

 

[konajoe]

RJ,
Check your starter…

GM starters use
153 tooth 12 ¾” flywheels straight across bolt pattern

168 tooth 14” flywheels offset bolt pattern

Hope this helps,

Joe
79K10

 

[dyeager535]

Never heard of a 14" flywheel. You sure you didn't mean 10.4 and 12"? (probably not exactly 12" either, but thats all I've ever heard) You are corect though tooth count/diameter governs the starter nose/block mounts you use.

Dorian
My tech/links page: <a target="_blank" href=http://www.dorianyeager.com/index2.html>www.dorianyeager.com/index2.html</a>
Why insist on counting when the ring gear has the tooth counts stamped in?