Ok, so I misplaced one of my power steering gear bolts (used to mount my steering gear to the K-Member) and I'm having trouble finding a replacement bolt.

(I just had FirmFeel freshen my gear box).

It is for a 1966 Dodge Coronet 440.

I would like to buy all three, but there appears to be a difference between 1966 and 1967.

They are both 7/16", but there appears to be a thread size/pitch difference.

Very odd.

Anybody know the specific details?

I thought there was only a difference in head shape, and either will work. I also thought they were 1/2-13.

Some 66 cars had a smaller thread size, not sure what it was. I think u.s. cartool had bolts, or may know what and where to get them.

don't know what size either, but I ran into it once.
I swapped a gear box out of a 66 and put it into a 67.
The bolts from the 67 wouldn't go through the gearbox holes.
I had to waller them out to get the bolts though.

Thanks everyone!

I figured it out...

From 1963 to 1966, the bolts were 7/16 – 14.

From 1967 to 1976, the bolts were 1/2 – 13 (as others have noted).

Hence, this means that the K-Members (with respect to the Steering Gear Box only) are different between 1966 and 1967.

And to make matters worse, the Steering Gear Box bolt holes are different also. (Well, at least one of the holes for 1966 is different... the two that are together on the same side will fit both sizes).

Meanwhile, I was able to locate my missing bolt...

thanks for reporting back, may help someone else down the line

agree

as do i.
now as for me REMEMBERING this, well, that's an entirely different matter.........

Certain peeps won’t rEmEmBeR what they posted in the next hour !

i can't aFFoRd those X-pensive MeMoRy pills advertised on late nite tv DoC !
iff'n you can see yer way to hook me up with a years supply, i'm SURE my mEmOrY will improve !