I was in the process of trying to clock the distributor to get the Camshaft retard to 0 degrees, and when I tried to screw the distributor hold down clamp bolt back into the intake manifold, the bolt ended up falling behind the firewall, and I can not find the bolt anywhere. I tried sticking a flexible magnetic rod behind there but I was not able to find the bolt. I tried everything.

So now I gotta buy a new bolt, and I can’t seem to find the correct thread pitch for the bolt.

Does anyone know the exact size? Not for an old SBC, but the one for a 2001 4.3 V6 Vortec.

Thanks in advance.

 

I did a search at GM Parts Giant and found that it looks to be this: 11508476
BOLT, Hex, BOLT, M8X1.25X25 9.8(DISTRIBUTOR CLA)

https://www.gmpartsgiant.com/parts-l..._ignition.html

 

Thanks a lot. I really appreciate it!