|
Tachometer calibration
I have three tachs and none of them read accurately when hooking them up to a running car with a known good tach connected to the engine. One is slightly high and the other 2 are about 20% fast. Is the small screw on the top rear of the tach a calibrations adjustment?
__________________
Charles
68 SWB, Dad bought new, now 396 & factory ac
64 Impala SS, 409 425HP, 4 speed AC
64 Bel Air Wagon, 400 Small Block
57 Bel Air all original 283 w/Factory Air
77 GMC Sprint, 454/425HP
67 Olds 442, all original
90 ZR1 Corvette
|