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Discussion Starter #1
351C.

Starting to think about new lower gear ratio... seeing different sizes out there.
 

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8"......... Actually, did all 351's have 9 inches? Never thought about that (I have a first gen)
 

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Original should be a 9" for a 351, with 302's (not available in Machs) on down coming with the 8" rear.

Carl
 

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...and just to complete the original poster's question, the 8.8 is a different and much later rearend family not seen in a Mustang until - '86?
 

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Get under the car and see if you can get a socket on every nut on the pumpkin. With an 8", you can. With a 9", there is at least one nut that will require an open end wrench.

MrFreeze
 
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