clutch question
 

what size clutch (12"-13") do i need for my truck? its a 69' with a 350 and the ch465??? granny gear tranny. i am asking because i am doing the moter swap next weekend and NAPA has to order me one and i need to get the swap done over the weekend. how can i check without taking it apart?

I have a 12" Heavy Duty clutch in my 70 GMC, 350 Grandma 4 spd. Clutch goes all the way to the outer edge of flywheel. Don't know if there's a larger clutch or not? Never had a problem with slipping, unless it was self induced. You should have an inspection cover on the bottom of the bell housing that you can take off and check the clutch? Hope this helps?