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Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
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| | | | Joined: Dec 2013 Posts: 23 'Bolter | | 'Bolter Joined: Dec 2013 Posts: 23 | I have a 65 c-20 with a 4 speed transmission 230 inline 6. We all know these trucks are low geared. I found a browning 3 speed that I'm going to add. These boxes come with different percents of overdrives. I thought about 15% would be about right but I would like some advise from someone who as done it. I will later be building a 292 for it so the best to use with that motor would be helpful. I think a old school two stick is goin to be cool as hell please help.
Bob
| | | | | Joined: Feb 2004 Posts: 29,787 Kettle Custodian (pot stirrer) | | Kettle Custodian (pot stirrer) Joined: Feb 2004 Posts: 29,787 | The 230 will take one look at that overdrive ratio and have a chill. It will allow you to get a better shot at staying under the torque curve in the lower gears, but don't expect your top speed to improve much. Once you have the 292 installed, it should have enough torque to make the OD work in 4th. gear.
Jerry
"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
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There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
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| | | | | Joined: Dec 2013 Posts: 23 'Bolter | | 'Bolter Joined: Dec 2013 Posts: 23 | Thanks Barry Is there any chance I could buy one of those old guys from you. The one I've found the guy does not know what overdrive ratio it is. When we figure it out it might not be usable. I trying to find some more just in case. Thanks again
Bob
| | | | | Joined: Dec 2013 Posts: 23 'Bolter | | 'Bolter Joined: Dec 2013 Posts: 23 | thanks Barry I like your input. You sound old school. I will take your advise put it in and spin it. I will let you know how it goes
Bob
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