It's the other way 'round. The 4500 is for the 6 and the 5000 is for the 8. :) Ken Ames Quoting John W Rosa <JohnRosa@xxxxxxxxxxxxxx>: > > I've got a couple of tachs here from donors-unknown > and the original '6 CYL' and 8 CYL' markings are > long ago faded and unreadable. > > Two have a 5000RPM redline and one has a 4500RPM > redline. I *think* all three came from 77AMXs. > > My guess was that the higher RPM was for the 6, > but figured I'd ask others that have such tachs > to be certain. > > Any answers? > > John > > > > > >