ConcoursMustang Forums
1st Generation 1964 1/2 - 1973 - Questions & general discussions that apply to a specific year => 1967 Mustang => Topic started by: 67gta289 on October 20, 2013, 02:58:28 PM
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I've got four different bolt types for the upper control arm shaft application, per the picture. Which one(s) are correct? Is there one that is obviously not concours correct?
Left to right:
"F" from a Ford NOS 1980s set
Rockford
R-B-W
Last one hard to read, could be an asterisk or other symbol
Thanks, John
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The fourth is a grade 7 marking, the other three are grade 8. From what I've found, the bolt is 380459-S(2) (Motorcraft BB390AC) which should have the following measurements - 1/2-13 X 1 7/8 in L, 13/16in thread length, knurled, 3/4 hex drive. Per Ford Car Parts, this bolt was used from 67-70 and on service shafts for earlier years. I could find no reference to grade but it may be a minimum requirement, or an engineering authorized substitution. The other head markings are typical of what supplier Ford used. I have a mix of grade 6 and grade 7 used on 64-66 so Ford used what would work. To get year (and month), plant and model specific, Jeff may have pictures.
If you question is what to use, I would find four matching.
Jim
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Thanks Jim. I have four matching of each style, so that won't be the problem. Just looking for the most correct one to install.
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Will take a look at a few originals this week to get an idea of what was being used at the time. Have a guess - just want to check ;)
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Old post, but it's what I'm working on. And to add to the data for a SJ March 67 car.
Although my ball joints are now the bolt-in style, my arms appear correct. The chisel marks attest to removal of the rivets and not a total arm replacement. The car has been in storage for 30 years, so no 'recent' work. Sprinkle grain of salt <here>.
I have the first bolt with the 5 radial slashes and the "F" in the middle. Same dimensions as Jim notes.
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Old post, but it's what I'm working on. And to add to the data for a SJ March 67 car.
Although my ball joints are now the bolt-in style, my arms appear correct. The chisel marks attest to removal of the rivets and not a total arm replacement. The car has been in storage for 30 years, so no 'recent' work. Sprinkle grain of salt <here>.
I have the first bolt with the 5 radial slashes and the "F" in the middle. Same dimensions as Jim notes.
That bolt looks typical.
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I have the first bolt with the 5 radial slashes and the "F" in the middle. Same dimensions as Jim notes.
It's a "Grade 7" bolt. I don't know the specifications, try Wikipedia if you are interested.
Jim
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I've got four different bolt types for the upper control arm shaft application, per the picture. Which one(s) are correct? Is there one that is obviously not concours correct?
Left to right:
"F" from a Ford NOS 1980s set
Rockford
R-B-W
Last one hard to read, could be an asterisk or other symbol
Thanks, John
In another thread recently, discussions of fine thread bolts was brought up (for use in a 67).
Apparently, fine threaded bolts would be an anomily on a 67 since nobody else chimed in.
I now wonder if there may have been a period of time this was possible, like a supplier thing. I feel confident the ones I found on my November 1966 built '67 are original and are indeed fine thread.