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I have a 66 Fairlane that I dropped a 370HP 302 in it. I have a C4 Trans that I will eventually change to a T-5. I looked at the rear end and found I have a 7.75 inch with 2:80:1 gears. The axle code is WDW-A. I'm on a budget and was wondering if it's worth keeping the rear end and putting 3:55 gears in it. Any help will be appreciated
 

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I kept my 8in and upgraded to an auburn pro and 4.10s and junkyard disc brakes. I didnt see any reason to spend the money on a 9in, i dont plan on running slicks or big hp. I think my t5 will break before my rear end will. Sounds like we have the same car, post some pics when you get a chance.
 
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