68 BB smog bolt head markings
 

I'm getting ready to have my smog system restored and I would like to know if anyone has an original 68 BB smog system on their car and can tell me what bolt head markings are on the bolt used to adjust the belt tension. I have one that has a P, grade 5 (3 marks). I think the rest of the system I have is original. Thanks.

Re: 68 BB smog bolt head markings
 

Hey Martin- I have a 68 375/396 i am gathering parts for- if your smog system is original- could you send me some pictures of the bracket that holds the pump- i am looking for one- thanks tony email [email protected]

Re: 68 BB smog bolt head markings
 

I took some pictures today and will post them when I have time to get them off the camera and downsize them. I'll send them to you in a PM then.

Re: 68 BB smog bolt head markings
 

Pic 1

Re: 68 BB smog bolt head markings
 

Pic 2

Re: 68 BB smog bolt head markings
 

Martin, Both of my 68 L35 SMOG bolts are orig:
They are Hex head, Gr-5's, with Head marking R B W in between the hash marks.

Model year- 1968 LOS 5th week of Dec o1967 build

Jim

Re: 68 BB smog bolt head markings
 

Thanks, mine is a LOS built 3rd week of January.

The bolts I have for the elbow in the back of the pump are RSC, grade 5. The bolts for the diverter valve to the bracket have a triangle, grade 5. Is this what you have? The pump I have is dated 3457. Tower clamps all dated 4/67. This has been pieced together from 2 groups of parts.

If you could post a photo of the adjusting brace I would appreciate it. That's the one piece I have that might not be correct.

Thanks!