i have a manifold bolt missing, it's the last bolt on the passenger side manifold by the "y" pipe does anyone know the size of this bolt, i took one of the other boltz out and tried to see if it would work but it didn't.....thanx

 

does anyone have a pic of the 305 tpi exhaust manifold on the passangers side. a close pic of the back by the y pipe would help thanx

 

If one of the bolts from another hole won't fit there's something wrong. Are you sure the bolt isn't broke off in the head? Try sticking a pocket screwdriver or a straight pick in the hole. See if it will go in as far as it does in the hole from the bolt you removed.
The bolt should be either a 10x1.50 metric or a 3/8x16 standard thread.

 

how many bolts are there suppose to be on the passanger side exhaust manifold?

 

6 bolts