Thread: speedo confusion

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Hey I have a 1940 Pontiac 2 door with a Chevy drive train 350 with a 350t trans and vdo gauges. This all came in the car when I bought it but the speedo was never hooked up I was wondering what need to do the job myself? I talked to a local speed shop and they wanted 300 buck to set it up for me. I was hoping to do it with a bit less invested. Theanks in advance for your help.

If it's a cable drive speedo it is simple.. If it's electric you should be able to get directions for the install..No big deal...Not worth 300 bux

Originally Posted by croom7401

Hey I have a 1940 Pontiac 2 door with a Chevy drive train 350 with a 350t trans and vdo gauges. This all came in the car when I bought it but the speedo was never hooked up I was wondering what need to do the job myself? I talked to a local speed shop and they wanted 300 buck to set it up for me. I was hoping to do it with a bit less invested. Theanks in advance for your help.

Since you are here locally try these guys,Dick's Speed-O-Tach (602)279-6463 They made me a new cable and housing with gear for my '54 Ford to AOD only $65.

What tranny do you have?
If itis electric you will need a sending unit and then it is 3 wires. Real simple.
You should start by pulling out the speedo and look for a model number
http://usa.vdo.com/products_solution...e-instruments/

daffy it's not a cable driven speedo its electrical. Jeff dicks speed-o-tach is who quoted me 300 for the job. Iceburgh its a chevy 350turbo that's all i know about it. i found this AUTOMETER HALL EFFECT SPEEDOMETER SENDER at partsbin.com i assumed its what i need along with the manual to my gauge and some sort of harness possibly

You will need part number 340 011
at this link
http://usa.vdo.com/products_solution...er-Senders.htm

Very simple 3 wires to hook up and then 1 button to program. VDO are the easiest insturments in the hobby to program

Mine is cable driven, and I have over $300 in mine, if my time is worth $5 an hour, and the damned thing still is off, needle bounces all over the place, but I ain't quit yet. I have invested in 2 cables, and 2 speedO heads, and lots of labor, not to mention the PBR's drank while working on it .
Jackie

Iceburgh nailed it with the sender and part number. This is what you need. Then once wired together. There are a ton of websites out there for VDO that will tell you step by step on how to calibrate your speedo. I have VDO too... very simple to calibrate and very stable accurate reading.

When I got my car from the prior owner, they had ganged together 3 senders like the one Iceburgh showed. They couldn't get the last one to fit, so they put a 90 degree driver before mounting the last one. So much weight caused the tranny speedo drive case to warp and leak. I replaced the speedo drive case with a new one and removed everything except one sender.

Why three senders you ask? I have an LT1 engine and the computer needs to know the speed. They also had a separate sendor for the Speedo and one for the cruise control. I went to one and drove the speedo and cruise off of the one coming out of the computer.

Thanks Iceburgh for the info, if not for your help I surly would have wound up like moparjack, although any reason is a good one to spend all day in the garage putting down some cold ones and working on your car. thank you again with any luck by Sunday I can haul A** down the road an actually know how fast I'm going.