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3800 sunfire update
I have done a lot of figuring over the winter and started working on the car again today. Not much, just getting my bearings again....LOL
I am looking for any ideas on the gearing. I have to get a new chain and sprockets to handle the extra power, so the mileage won't be too bad to start with.
Current gearing: 3.91
New chain/sprockets: 3.05 should be a huge improvement
New diff: 2.54 $1000+
Would it even be worth it to mess with the diff?
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1991 F-250:
4.9L, Mazda 5 speed, 4.10 10.25" rear
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