I was digging thru some photos today of photos I'd made when disassembling my front clip, and I came across and remembered finding a yellow ink stamp on the subframe (I think this was behind one of the frame extensions to the bumper).
The photo attached shows this marking. Is this something that occurs on all of them? Is this maybe part of a stamped part number? Any comments appreciated...
The yellow letters on my subframe (under the bumper bracket mount location) appear to be a PN... although I cannot read them all. I went to the Chevrolet P&A today (30A dated 1Oct1970) and found the following under section 7.003 FRAME ASSEMBLY. "The left hand side outer member will bear the frame identification with characters stamped ahead of the rear bumper bracker attaching slot. The top line of this identification will provide the part number of the frame assembly, the name of the manufacturer (abbreviated, ie. Pontiac-Pon, Smith - S, Parish Pressed Steel - PPS). The bottom line will provide the month, day, year, and shift number."
For that section, only full frame cars were listed, so I'm still looking in the P&A for the 'subframe' section to find the PN, but the notation above reflects *exactly* where these yellow numbers were stamped on my subframe - ie. left hand side, behind/under the rear most bumper bracket mounting slot. Section 7.010 entitled MEMBER - EXTERNSION-REINFORCEMENT-WASHER, Frame Cross, Front' includes
68-69 Chevy ................................3954642 1 $120.35 side and cross (note 2_)
NOTE 2: When used on 1967-68 models it will be necessary to re-work control arm bumper per instruction sheet and use 1969
stabilizer shaft 3955782.
... Is the part number above the '69 subframe PN? (3954642)??
actually now I'm thinking that part numeral I can read is probably the 'last line'.. ie. month, day, year, shift.. seems I can read a ...7309... which could be 7 for july, 30 for day, 9 for year which corresponds well to my Sept production date.
Has anyone found a 'cleaner/more complete' id number on an original first gen camaro subframe??