Can anyone tell me the placement of the factory seatbelt bolt locations in a slick F100? I have a '61 but it did not come with pre-punched holes, but my understanding is that 64-66 cabs came with the mounting holes punched/plugged from the factory. Any info would be great, thanks!
Hello, The seat belt placing is up to the owner, as to comfort and fit. In the factory, the design team decided where they thought the seat belts should be placed. So, they did not take into account the millions of different drivers that would drive the factory placed installations. The idea of it can be adjusted was satisfactory. There is no specific place on your floorboard, then sit in it, have someone place the seat belt on and drape it down to the floor in a relatively straight angle. Do it for both sides of the driver, as you sit in place. Now, mark the floor with the temporary hole from the chrome stanchion. Look around to see if there are any raised parts or double floor levels. If so, those double places are the strongest. But, since your car like most of our old hot rods did not have factory seat belts, then you have to select the place where it is comfortable for you. Once you drill the small hole, then place your washer and nut/bolt through. If there are any hinderances, selected another close by, flat location. Now, use the given flat washer from the dealer’s supplied parts. Get a wider but similar hole washer than the one provided. Use the factory provided washer as instructed. Then to finish the installation, use the wider plate under the floor for more security. The redline is the floorboard The yellow line is a wider washer than provided or a simple separate, wide plate under the floorboard. Jnaki This is what I did for our 327 powered 1940 Ford Sedan Delivery when my wife said she would not drive it unless it had seat belts. The shoulder harness (4 point, dual straps) over the seat was the only other option and that did not go over well with a girl/woman driving it in her pressed clothes. I was driving it home from a photo shoot one day and got caught in a CHP traffic road stop for vehicle inspections. Those kind that require random selection of cars to be pulled over to the side for a vehicle inspection. The CHP inspector thought the red Ford Sedan Delivery hot rod was going to be a gold mine of infractions. So, he started with the headlights and brake lights and worked his way inside. When he saw the seat belt installation, he went to the floor behind the seats. He gave his approval with flying colors when I explained how I installed the custom GM Chevy factory seat belts into the 40 Ford Sedan Delivery. Yes it was a Chevy product in a Ford, but, they matched the upholstery perfectly. We placed a smooth, opaque custom piece over the hidden GM logo and it looked as if it was a custom product. Which it was! The CHP guy liked that I put in a second wider washer plate underneath when I explained the installation. Strength plus… YRMV
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