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1973 performance

Old Jun 25, 2004 | 10:05 PM
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Exclamation 1973 performance

I have a 73 F250 with about an 11 inch lift. it has 33 inch mud kings that i plan to move to 37 inch. It has a 390 and i was wandering what would give it the best performance
 
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Old Jun 25, 2004 | 10:09 PM
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Definately need to regear if you are going that much bigger with your tires.
 
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Old Jun 26, 2004 | 03:45 AM
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some 4.10s or 4.56s gears would help but otherwise headers, edel rpm intake, 600cfm carb, rv cam.
 
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Old Jun 26, 2004 | 02:44 PM
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4.56 or higher gears would give the best bang for the buck.
 
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Old Jun 26, 2004 | 06:10 PM
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whers the best place to find 4.56 gears? What is stock in a dana 44 HD and a Dana 70?
 
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