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Old 05-08-2020, 06:25 PM   #6
rotorwrench
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Default Re: 54Merc Transmission Mystery

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The later dual range cruise-o-matics had three drive settings so there was one additional detent position on those units.

I think the 1954 Mercs had the small case PAE-7003-A or B single range transmission until they started having higher horse power stuff in 1955. Lincolns and higher horse power stuff used the medium case until the large case came along in 1958. The PMB-7003-A came out for the 1955 model year with 292 4V engine applications. It's a medium case model but it's still a single range type.
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