![]() The lowest tooth count drive gear that I have seen has 7-teeth. The highest tooth count driven gear I have seen has 22-teeth. The highest tooth count drive gear I have seen has 10-teeth. It would be good to know what the speedometer head is from, and have it confirmed that the speedometer head is not broken.Ĭlick to expand.I think that might be the only way to go. Unless he has cut his tire circumference dramatically, or made a radical change in rear gear ratio, or both, it is hard to comprehend a >2X change.Ī TH350 does not have a eccentric, re-position-able speedometer drive, that can accommodate a huge range of driven gear diameters like other transmissions do. If the TH350 is all stock, it should be close to 1000 revolutions per mile output, give-or-take rear ratio or tire height change. If the delta really is that big, then there might not be a way to correct it with any combination of drive/driven gears. There is either a severe mismatch between the transmission brand/age and the speedometer head brand/age, in terms of the expected revolutions per mile. Most GM stuff that I have worked with expect an output of 1000 revolutions per mile, regardless of GM division. Click to expand.I have never seen a speedometer cable output at >200% the necessary RPM.
0 Comments
Leave a Reply. |