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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 2010 Posts: 41 New Guy | | New Guy Joined: Dec 2010 Posts: 41 | I have 65 chevy shortbox fleetside and I installed muncie m-20 4 spd in it,,does anybody know what speedo cable will work with this set up?original speedo in dash, saw one on ebay it said,(5/8 18 thread on instrument side and 7/8 18 thread on tranny side,65 or 83 inches long,is speedo 5/8 original on speedo and is muncie m-20 a 7/8 on tranny? thanks for any input,its a 350, | | | | | Joined: Jun 2004 Posts: 8,597 Riding in the Passing Lane | | Riding in the Passing Lane Joined: Jun 2004 Posts: 8,597 | The original cable should fit the connections. Sometimes the length is too short. If so get a replacement that is longer. You will probably need to juggle the gears to get the correct speed/distance.
They say money can't buy happiness. It can buy old Chevy trucks though. Same thing. 1972 Chevy c10 Cheyenne SuperIn the Gallery Forum | | | | | Joined: Dec 2010 Posts: 41 New Guy | | New Guy Joined: Dec 2010 Posts: 41 | what do you mean ,,jiggle the gears? | | | | | Joined: Jun 2004 Posts: 8,597 Riding in the Passing Lane | | Riding in the Passing Lane Joined: Jun 2004 Posts: 8,597 | Its juggle. When you change trans the speedo is generally incorrect. If its not far off you can usually change the driven gear that goes behind the adapter that the cable hooks too. Compare the odometer with the mile markers on the freeway to find out if its off & how much.
They say money can't buy happiness. It can buy old Chevy trucks though. Same thing. 1972 Chevy c10 Cheyenne SuperIn the Gallery Forum | | | | | Joined: Dec 2010 Posts: 41 New Guy | | New Guy Joined: Dec 2010 Posts: 41 | ok thanks,,ill give her a go,, | | |
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