1940 ford coupe seat bolt hole dimensions

[geoford41]

I have a 1940 ford Standard coupe front seat and need the dimensions for stock mounting holes for a split back seat. The floor is an aftermarket Bitchen floor so there is no stock floor reiforcement to reference off. I am fabricating 1/8" by 2 1/2" wide X 24" long flat stock to go in place of the stock under floor reinforcemnts but need the dimension from the toe board to the front hole on the seat or from so other reference point such as from the "A" pillers back to the front hole. Any help will be appreciated

[Fred A]

Bitchen floor is the clincher here. Stock Ford is a rectangle just over three feet wide as I recall. This dimension is needed since I search for a seat for my Business coupe. On your own with this since you say no reference points. The front back dimension is variable since the seat can be moved to fit with those right angle brackets. Things are little different if you have a business coupe but the floor doesn 't know what kind of coupe it's in. Again original is easier. Good Luck: Fred A

[swoopNZ]

Precision coachworks sell good original style repro floor ( seat ) stiffeners.
Also you can get the positions pretty close from the seat runners when you get it .

[okiedokie]

Sounds like a chance to put it where it is comfortable for you.

[Bob G/Spanaway]

Mine has had some parts of the floor replaced.
Near as I can tell without tearing it apart it's 16 in. from the front door post.

[geoford41]

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Thanks all for the feed back, Yes I know I can place the seat to suit me but I was looking for a reference point. Bob G/Spanaway very helpful.

[joel]

32 5/8 in from the front body mount to the front seat mount hole and 18 3/4 from the "A" pillar mount to the same seat hole. The seat mount holes are in a rectangle 12 x 36 1/2. I have a Std 5W coupe and I have had both styles of seat in the car.

[19Fordy]

On the 1940 DeLuxe Business Coupe (model 01A-77B) that has the package tray I get 16 1/4 in. from the inside of the door pillar to the centerline of the first bolt hole in the floor seat bracket as installed in the car. In the photos the blue tape is 90 degrees to the tape measure. There are 2 bolt holes in the seat floor bracket which allows the seat to be bolted in place in two possible locations. There is only one threaded (caged nut) bolt hole in the floor pan which you can see in the photos. That second bolt hole is 1 1/4 in. (centerline to centerline) behind the first bolt hole in the floor seat bracket. So, the total distance from inside the A-pillar to the threaded bolt hole in the floor pan is 17 1/2 in. The underside of the floor pan where the floor pan bolt (5/16-24UNF)secures to the cage nut is shown in the last photo. Notice the stiffener piece of metal adjacent to the cage nut. A piece of 1/8 3/4 x 3/4 angle would also work in your situation. The dark object in the upper right is the bottom of the frame rail and the dark item to the upper left is the frame stiffener through which the exhaust pipe goes.
Also, that 1/8 in. thick floor bracing you mentioned in your original post is insufficient re: resistance to flexing. It's like laying a 2x4 on its wide side - the result being much flexing and little stiffness. The floor pan in this car is the original floor pan. Click on photos to enlarge. Hope this helps.

[geoford41]

I will use a piece of 1/8" 3/4" or 1" angle Iron as 19Forty suggests to tie in the front to back seat holes and the another running at 90 degrees from the side rails to the driveshaft tunnel to really stiffen up the floor with a few rosset welds from the floor pan to the angle iron in both planes, thanks again all who responded. geoford41