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1948 - 1956 F1, F100 & Larger F-Series Trucks Discuss the Fat Fendered and Classic Ford Trucks

interstate speed

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Old Jul 16, 2003 | 09:07 AM
  #1  
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From: Richmond VA
interstate speed

i am almost sure i have a 4/27 rearend. what is the best way to change the ratio so i can get on the interstate. i live in a large metro area and it s**ks tring it get on the other side of town for a cruise in using only back roads.

thanks
 
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Old Jul 16, 2003 | 09:18 AM
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interstate speed

Since you are looking at new tires you could try to get the tallest you can that will help a little or you can change the ratio which isn't that hard but a little expensive but wouldn't a 3.54 be nice?
 
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Old Jul 16, 2003 | 09:20 AM
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interstate speed

Nathan

where can i get a new ring gear
 
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Old Jul 16, 2003 | 01:32 PM
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interstate speed

At any place that deals with differentials.
 
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Old Jul 16, 2003 | 02:38 PM
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interstate speed

Ddurant,

It's very likely that our host - MotorHaven carries them, but just in case;

1. Sacremento Vintage Ford have a 3.91-1 gear & pinion (for a 48-50) for $295.00 USD plus all their usual surcharges.

2. MACs only list a 4.55-1 which doesn't do you any good.

3. Dennis Carpenter may carry them. (They have an online catalog)

If Daryl (Butch 302) Stone's girlfriend lets him come out and play, he will likely know a few others....

Later,

 
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Old Jul 17, 2003 | 12:35 AM
  #6  
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interstate speed

There's a guy down in GA that wants your gears.

Meanwhile, I think you have a Dana 44 rear axle. It's fairly common, so you should be able to find an entire differential, with gears, and trac-loc, that can be swapped in.

Do a google search on Dana 44.
 
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Old Jul 17, 2003 | 09:06 AM
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interstate speed

Do not use the gears from many front dana 44's. They have reverse cut gears. If you installed them reverse would be your only gear to go forward. You might have to check on the trac-loc carriers since later they used 30 spline while yours are 19 spline.
 
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