I have a disassembled 289, the heads are sitting in a tub next to the block which is on an engine stand. What size and thread bolts do I need to attach the heads to the block? When the time comes to rebuild the engine I'll buy the proper bolt kit, but now just for storage purposes I want to mock the engine up and have everything off the ground. Everything is stock and I just want to pick up the right bolts from the hardware store for now.

 

you dont have the old ones?

 

I bought the car with the engine disassemble and in 3 tubs. An engine rebuild was started as the block has been boiled, cam polished, and heads milled, but was never finished. Since then light surface rust has formed so everything has to be gone over. And no, I don't have the original bolts, they weren't included along with rocker arms and push rods

 

they are 7/16 but idk the thread pitch off hand someone will chim in later with that im sure

 

Hope so heh, thanks for the info rmodel

 

Can anyone else help me out on this one?

 

7/16" coarse for the heads.