If the odometer is reading correctly I don't see how it could be a "ratio problem". Sounds more like a speedometer mechanism problem. Maybe weak magnets. Maybe needs lube.


"It's just a phase. He'll grow out of it." Mama, 1964

1956 Chevy 1/2-ton 3100
1953 Chevy 6100 "The Yard dog"
1954 GMC Suburban Now with a new proud owner.