freakdude
Well-known member
Im wondering if anyone can tell the the ratio on the sending unit on a 1990 ford 4 speed? Also tipically what is the ratio on a 40s speedo, does it vary by manufactorer? Is a 40 Chevy, Ford, Pontiac, Plymouth the same ratio on their speedos? Are 40s cars tipically transmission driven or wheel driven? Any help is appreciated. Im running a Beetle dash with a Ranger 4 speed and trying to come up with a suitable speedometer donor. I think the speedo hole is somewhere around a 4 inch. It looks like the 40s speedos are a similiar to the size and type as the Beetle, but the VW is wheel driven, and wont work with my application.....