Speedometer Cable

The car came from the factory with a Saginaw 4-speed transmission. By the time I got it someone had replaced that with a TH350. During the restoration I installed a Muncie M20 transmission. The speedometer cable routing wasn't set up for a Muncie, so I got a slightly longer than original speedometer cable. It still didn't fit very well, and there was no place to secure it safely to the car. It ended up with a sharp bend causing the speedometer to be wildly inaccurate, and it never read above 35mph.

Twenty years later I finally decided to make it right. I found a better way to route the cable but the one I had ended up about 20 inches too short. I took it out to measure it and found it was 72 inches. It turns out Classic Industries has a 92 inch cable so I ordered one.

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The cable was coming down the outside of the frame and cutting across under the transmission.

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Here it is flopping around under the trans.

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I eventually wire-tied it to a clamp for the reverse light harness.

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I'll need some clamps to hold the new cable in place. I couldn't find any at the hardware store so I made a couple.

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Using the socket method to get the cable through the grommet. I still had to put some slits in the hole in order to get the socket through. Lubricating the socket with some WD40 helps as well.

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Here are some pictures of the new cable installed. It now runs down the frame rail on the drivers side.

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Then it goes over the transmission cross member. It's held in place with the new clips.

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This works well for a convertible because it has the brace which supplies the mounting points for the cable clips. Alternate mounting points would have to be made for a coupe.