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Power Strokes
2017+ 6.7 Aluminum Super Duty
2022 F250 Build/Mod/Spam Thread
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[QUOTE="Powerstroke Cowboy, post: 1558028, member: 610"] No, 6 speeds. They do have the same final OD of .68 as the ten speed. With 3.31 and 20 inch rims the rpms are very low. I am thinking 1550 or 1600 at 70. EDIT: The 10R140 and 6R140 do NOT have the same OD ratio. The 10R140 is .63 and the 6R140 is .68. Sorry for the confusion!!! [/QUOTE]
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