Hello, this may not be the right area but....a little history first. 65 c10 8 foot fleetside. When I got it sat for 25 plus years under a grove of hemlock trees. Now sits on 85 suburban 4x4 frame and running gear, 350, 700r4, I believe the rears are 3.73. Question is Speedo seems to be pretty close at slower speeds but seems to be off more the faster I go. Does anyone know what gear should be in the trans for this setup?[img]https://www.stovebolt.com/ubbthread...umber/25065/filename/20201120_160746.jpg[/img]


1965 c-10 4 wheel drive conversion
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