If the transmission a computer shifting transmission, then you need to hook up the eltronic speed sensor to be able to read speedometer. The gear reading is on the dash column, in which a wire hooks to the steering column.
ease speedometer cable on a 1980 el camino
what motor are you running currently is the question and what transmission
should be able to replace gasket/o-ring onca speedo gear is pulled if it is an automatic trans
250e
Dexron 3
Did you find the problem? I have the same issue.
probably a turbo 350.
Depends on the engine and transmission
probably a th350.
One mount on the crossmember
The turbo 350 transmission came in a 1979 ElCamino.
$150.- for good working 350 turbo transmission. 402 - 505 - 6002