Anyone know for sure what an original jam nut looks like on the factory shifter handle that locks against the knob. Is it chrome and special style. Anyone have a picture that would be great. Thanks.
Dave, Not that it answers your question, but, here is where I got mine... https://core-shifters.com/collections/jam-nuts Specifically, I ordered this.... https://core-shifters.com/collectio...nob-jam-nut-3-8-24-3-8x24-fine-thread-3-8-amc Troy
Troy thanks, I managed to find that site too. They are Zinc so I am leaning that way for my reproduction knobs. When you think about there is very little chrome hardware used on our cars. They didn’t want the expense.
Thanks Dave, the reproductions I am having done are going to have a zinc nut I believe. They are correct style however. I could have gotten chrome but it would have increased the price. I just did not know at the time.
I just found something very interesting in the assembly manual. Says consolette cars did not use a jam nut! This I am guessing because it was plain. The pattern type knob needs a nut to lock pattern so it faced properly.
Very strange. I bet many got the jam nut by mistake. Not many Buick 4 speeds were made compared to autos. Very small percentage.
Dave, Dave Tumas's car is correct and so is my 69. You must have been looking at a 71 assembly manual and assumed the other years were the same. I just checked all the assembly manuals from 68-72 and here is what is correct. All 68-thru 70 cars got the jam nut regardless of whether the ball was for a console (without the shift pattern on ball) or without the console (with shift pattern on ball). All 71-72 cars without the console (with shift pattern on ball) got the jam nut. All 71-72 cars with the console (without shift pattern on ball) did not get the jam nut. So if you are supplying the jam nuts as well, then you could leave them off the 71-72 cars with consolettes only. Duane
I guess I should have checked my 70 assembly too. Wonder why they dropped it in 71? The correct jam nuts are on backorder. They are not cheap for a single nut.
I have never tried to figure out what the designers/engineers were thinking, I just deal with what they gave me to work with. Duane
After having a shift knob come off on a hard shift on the track at the GS Nationals after accepting my trophy which then smacked off the rear windshield with a crack and in the process ripping my palm open on the shifter end I know the value of a proper fitting knob. It scared the crap out of my wife in the passenger seat. She already was scared knowing I was going to hammer it anyway. Amazing I didn’t shatter the original rear windshield.