Thread: 69 c50
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Old 02-15-2019, 11:25 PM   #8
Airdirect
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Join Date: Oct 2016
Location: Powderly Texas
Posts: 300
Re: 69 c50

On the inside of your glove box door is an option list. It will show the type of rear end your truck had from the factory. On mine you can see it had a E17201 2 S (Eaton 17201 two speed). Lower down on the list it should list the rear end ratio in hi (5.29). If you have a Eaton 17201, I still have my 5:29 ring and pinion. I upgraded to a 4:56 as my engine only turns 2,500 rpm. This gives me a top speed of 71 MPH.
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