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5500 NAPCO front ???
1969 USAF GMC5500 with NAPCO front axle (7.20 ratio) believe it's an Eaton. What numerically smaller gearset could I use to make this beast more highway-able? It can't be that easy as installing a ring gear/pinion from a rear axle of similar weight rating, can it?
Any input appreciated!
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1994 C1500 rclb 1988 C1500 rclb
1969 ES5500 B E A S T 1983 C10 'farm truck'
1976 K20 Suburban 1984 K10 Suburban
1981 Jeep CJ5/350 Vortec
1941 Dodge WC18 Ambulance
2000 GMC Bus (parts warehouse)
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