flywheel bolts?

[Ol'school]

Does anybody know what size and grade of bolts I should use on attaching the flywheel to the crank on my '57 TBird stick 292 Y Block?
Also the proper bolts to use for attaching the pressure plate? Do I use lock washers on the bolts?
Thanks

 

[dmsfrr]

Not sure what the specs are on the bolts, but make sure they don't end up too long.
If they go thru the crank flange more than 1 thread or so they can lock up against the rear of the block.

I semi-recently replaced the old engine in my project with a rebuilt 292. Used the same crank flange bolts (w/ spacer ring) from the old engine to hold the same flexplate on, and the bolts hit the block.

.

 

[Crankster]

I bet Blue loctite wouldn't be a bad plan

 

[Hoosier Hurricane]

Also, the flywheel bolts have to have thinner heads than standard bolts or they will possibly rub the springs in the center part of the clutch disc. The pressure plate bolts have longer unthreaded portions under the head to act as dowels to locate the pressure plate. No lock washers on the flywheel bolts, lock washers on the pressure plate bolts. John

 

[KULTULZ]

FLYWHEEL-

C3AZ 6379-A (6)
7/16" - 20 X 27/32" HEX HEAD NYLON PELLET LOCK

PRESSURE PLATE-

350329-S2 (6) - BOLT
5/16" - 18 X 13/16"

34806-S7 (6) LOCK WASHER
5/16" -

Above GRADE 8 Case Hardened

If cannot find NOS, maybe AMK or ARP.

Be careful of CHI-COM substitutions.

 

[Ol'school]

Thanks for the great information on the proper bolts to use. Now I know what to look for.