Stevec

Just bought a used engine stand at a swap meet but the bolts to attach it to the stand are missing.Want to bolt up a 455. What bolts do I need to get? What size? What grade? How long? Etc. Thanks

Warhead

The length of the bolt will be determined by how long the stand-offs are on the engine stand (the stand-off being what the bolt must go through to attach to the engine). You will want a bolt that is 3/4 inch longer than the stand-off. 3/8ths 16 NC thread, with a 9/16ths head, GRADE 5 minimum.
Mine are 3 1/2 inches on my one stand, 4 1/2" on the other engine stand, overall length.
Get some good thick washers for it too.
Jim

citcapp

Grade 8 3/8" SAE course get the length at least long enough to go through a few (3-4) fender washers and 1" into the block. I always buy them to long and use a pile of fender washer to shim out for the proper depth but that's just me.

joe_padavano

The bolts aren't missing. Engine stands don't come with these bolts because different engines have different size bellhousing bolt threads. Just buy the ones you need.