Quote:

What size bolts are needed to attach a clutch to a flywheel on a small block, say a 340?



The thread size is 3/8 16 and 1" should do the job.
Some 10.5" plates need a small diameter head to clear the disc.
I only use either ARP or the MP bolt kit though
Its not worth it to buy fasteners not designed for a particular job.You have about a 50# circular saw blade spinning at 6000 rpm so please only use the right stuff
Gus


64 Plymouth Savoy
493 Indy EZ's by Nick at Compu-Flow
5-Speed Richmond faceplate Liberty box
Dana 60