P/g passing gear lever position.

Transmission to Rear-end

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sc2dave
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P/g passing gear lever position.

Post by sc2dave » Fri Sep 09, 2016 8:45 pm

Is it important if it's hooked up or not? Will it damage trans if not hooked up? I don't have any parts to hook up.Also, should the lever be all the way forward or to the rear? Car won't be raced.

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Alan Roehrich
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Re: P/g passing gear lever position.

Post by Alan Roehrich » Sat Sep 10, 2016 9:22 am

That is not a "passing gear" lever. That is the throttle pressure valve lever. Yes, the transmission will work, and survive without it under normal driving conditions with a mild engine. The valve itself is spring loaded, the inside lever rests on it. If you do not have the bell crank and the linkage rods, just leave the lever disconnected and do not attempt to position it. The transmission will work MUCH better with it. What it does is increase line pressure proportionally to throttle input, so that the line pressure rises under heavier throttle. The reason it causes the transmission to downshift under very heavy throttle at lower speeds is because the increased line pressure counteracts governor pressure.

The correct bell crank and mount are not that hard to find, and you could make the rods out of 1/4" or 5/15" bar stock. Alternatively, you could convert it to cable actuation, since the bell crank is 1:1 or close to it.

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