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| | | | Joined: Apr 2005 Posts: 2,101 'Bolter | | 'Bolter Joined: Apr 2005 Posts: 2,101 | While your 50 3 speed trans may have similar gear ratios, little else is the same as the 58 OD transmission. 55 up vehicles do not use a torque tube, all are open driveline. The BW OD replaces the tail shaft on a standard 3 speed transmission. It has an electric solenoid, other electrical components, and a cable to engage the system. There are some later 4 speed transmissions that 4th gear is an overdrive. They are completely different from the BW unit. This and most OD units are 70% overdrive. They will lower engine rpm's and can increase speed accordingly.
You should consider that early vehicles were designed to drive at lower speeds and the brakes and steering were designed accordingly.
Fred
1956 3100 Pickup/Red/350/3sp OD/PS/Disc Brakes
1957 Bel Air Sport Coupe/Red/355/TH350/PS/Disc Brakes
2017 Silverado LT Single Cab SB/Black/5.3/6 Speed Trans
1947 Willys CJ2A w/F-Head engine
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