Okay,my Grumman 292 2ton with dually rear end may have had another rear end {or tranny} installed, changing the final drive ratio. Reason I say that is a PO put stickers on the speedo, showing a higher new speed, ie 30mph indicated equals 40mph on the road. Sure would like to run into one of those roadside automated radar signs for verification.
Problem is, I dont like the rpm the engine has to turn on the road. At approximately 60mph, the engine is running just over 3000rpm. Of course 1st gear of the 4 speed tranny is absolutely useless. Sure would be nice to run 60 at about 2K or so!
Is there a component I should be watching for to solve the high rpm/useless 1st gear situation?
