The Stovebolt Site Forums The Parking Lot Big Bolts Big bolt floor mat

I'm guessing that the transmission hump is higher on a pickup floor mat and that would be the only difference between a pickup mat and a big bolt mat. The last posting regarding big bolt mats was in March of 2006 and at that time none were available. Has the situation changed? Is anyone reproducing mats for them now?

Thanks,

Scott

I've never tried one on a Big Bolt, but a 1/2 ton, 3-Speed truck has a low floor hump. If they are too different you could always try to get an NOS one. NOS Big Bolt parts are hard to find, but they are out there. I just sold some NOS Wide Axel Fender Fillers.

Bill

I got one from Jim Carter. It has some flaws in the mold, so there are some slight irregularities, not enough for me to worry about. There is another company that has them, but I am not sure where I saw it, maybe Brothers or Chevs of the 40s.

I thought all the cabs were the same size?

if you're talking about your 64, any model cab is the same, only variable is column shift ["low hump"] or floor shift ["high hump"]

Bill

So using the column shift mat and cutting the needed openings for the floor shifter and emergency brake would work? The hump is only an inch or so high.

might - more likely wrinkle - if you have a floor shift you need the one for the floor shift, which is listed, can't see why a heavier GVW truck would have a different floor pan in it, GM didn't do things that way

Bill

If it's an AD truck, get one for a 4 speed. All AD trucks with a 4 speed had a hump didn't they? 3 speeds were flat,
Scott

It is a 64 GMC 4000. The hump is only an inch or so higher than the rest of the floor. In a pickup the engine and transmission is much higher and if I recall correctly they have a 4 or 5 inch hump.

the seat top would only be an inch or 2 above a 5" hump - might wanna check things out closer, don't know why a bigger truck would have a smaller hump, the cab floor is the same distance above the frame, as the engine and trans should be, and the top load trans sticks up much higher than a 3 speed .... this big 64 GMC looks to have a higher hump than an 'inch or so', maybe yours has been changed?

Bill

It's been a while since I last drove the '62 GMC 6500 I used to drive for a company (1974), but I seem to remember the low floor in that truck too. I also bought a '62 GMC 4000 in the early 80's and same thing, I remember it having a low floor. Now they are the same cabs as a pick-up, as also mentioned above, but a big bolt it is way up higher and you have the running board and fender fillers that go down to it, therefore there is a lot more room under there and no need for a large floor hump.

Scott, the 3-Speed floor, as I mentioned earlier, has a low hump and the 4-Speed trucks (1/2 thru 1 tons) have about 5 or 6 inch hump. It would be worth a try to see if a 3-Speed mat would fit in a big bolt. Instead of chancing a new one, try to buy a decent used one from a junk yard. Just cut out your own holes for the shifter, emergency brake, PTO, etc.

Bill

Good idea on the used junkyard pickup mat. Measured it today, from zero hump at the back to 1 3/8 at the highest point at the front. Even a pickup with a 3 speed might be more than that, so a used one as a test is a good idea. Thanks!