I have a 37 GMC with an Olds 230 flathead. I'm having trouble finding head bolts (7/16 by 2.75"). The bolts that were in the engine are a mix of odd bolts that I suspect were the result of a bad rebuild in the past. Can I use a Grade 8 Bolts of the correct size? Or does someone know a place to get new ones?


Mike J 37 GMC