7/16 NC- - - - -I believe they're 7/16-14. DO NOT use the Grade 2 bolts from the bulk bin at the local hardware store- - - - -Grade 5 or better. Nothing like a broken bolt and an engine dropping onto a foot to make it a very bad day! A cheap stand designed to hold a small block Chevy V8 won't be long enough to keep an inline six from tipping over. Here's a good one (2000 lb type):

www.ebay.com/itm/375159045700?

Jerry


"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!