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Old 07-15-2021, 10:31 AM
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MPKind MPKind is offline
Chief Ponti-yacker
 
Join Date: Mar 2002
Location: Champlin, MN
Posts: 739
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I converted my '65 to a 4-speed bench seat, manual brakes.

The M-20 gearbox is interchangeable, as long as you have the long output shaft and tail housing. The pedals are hard to find, I had 2 extra sets, but sold one to a local guy that never paid me in full. I asked for $375 for a power brake set, he paid me $300...I'll pay the rest later. Right. I think they going for nearly double that last I saw one for sale. Factory shifters were Hurst Competition Plus. 2 different handles were offered. One for bucket, the other for bench...the bench handles are tough to find and were only offered in '66, not '65. Shifter porch and other small parts like the z-bar, springs and brackets are only used. The outboard z-bar bracket is welded to the chassis, so that's a challenge.

3.42 rear is the highest gear ratio you should use. Pontiac didn't go any higher than that with a 4 speed.

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