53 F100 - PSD: Guage Question

[Bednar]

Hey there,
I was just wondering if there is a ford tech here that can explain to me how the guages work in a OBS truck, I am planing on building another truck now that my frankentruck has everything i could ever want on it.

I am planning out a 1953 F 100 build and putting a OBS PSD motor in it. I just have a few worries and one of them is if i can unwire the guage cluster to use some old school style autometers. If anyone has any insight into the situation pleas dons hesitate to post it up!!!!

[superduty4x4]

The one thats going to give you problems is the speedo, and I'm not sure if there is a way to get around using an OEM speedo since there is a computer module integral to the speedo. Sounds like a sweet project though, good luck with it!

[jonnydiesel]

sounds sweet a buddy and i made a 1963 f100 with a 12v cummins in it and that thing was fun

[Bednar]

Hey sd 4x4
Does the spedo run off the positioning sensor in the rear. I can just blank that off and use another form of speedo i think autometer has something for that.
Are you saying that i can probably get all the other gauges off of the harness to the cluster? So they work like regular analog gauges?

I think it could be pretty epic. I'm doing a rough layout of wat i want out of this truck.
I want it to be a Drag truck. Something different something that I wont see again so i think i will box the frame. Do a 4 point in the rear and ifs up front. Some fat-a$$ mickeys on cragers to keep with the style and other than a hoodstack and a PSD keep it as close to original as i can. I have always wanted to build a motor from the block up so i think this will be the perfect time.
Thanks for the input yall If anyone has any ideas run them by me.

[superduty4x4]

All the gauges are run with 2 or three big plugs on the back of the cluster. I would think it would be super simple to take the wires for say, the water temp gauge, and route them to a REAL analog gauge but I've never tried it so don't quote me on that.
Yes the speedo is run off the sensor in the rear diff, but that's not the problem. The problem with the speedo is there is a computer module/chip built into the speedometer itself that stores mileage. Its this module (called the PSOM, aka Programmable Speedometer/Odometer Module) that receives the signal from the VSS in the rear end and send it to the PCM, which uses it to control trans shifting (in an auto). I'm not sure how you'd get around the PSOM.