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Old 08-12-2014, 02:38 PM
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fatherdoug fatherdoug is offline
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Quote:
Originally Posted by O'Rattlecan View Post
It's all about striking the right balance. If Ford made trucks with 4.10's off the lot, I'm not aware of them. They might exist, but they're super rare. Maybe 3.73's are the right balance for you? You will gain a lot of power with 3.73's.

I have 3.55's in my pickup with a 351w, and when towing it always did pretty well. With your tire being slightly oversized, the effective engine speed ratios end up being about the same if you did 3.73. If you had a stock tire, a 4.10 would probably be out of the question, but you don't, so it's a real option.

Ryan
They are actually quite common, Ryan. Usually installed on 3/4 ton and larger. My '74 250 had 4:10's and my '89 250 has 4:10's.

I do wish they put a lot more 3:73's in their trucks. The Aerostar AWD had 3:73 ratios and was a perfect balance between mileage, performance and towing.
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