05-09-2021, 09:03 PM
I don’t know the answer to your question. Most rear ends have a stamp or tag on them indicating gear ratio. A strobe light tachometer could determine the tachometer accuracy. There’s even an app for that!!
1993 Newell (316) 45' 8V92,towing an Imperial open trailer or RnR custom built enclosed trailer. FMCA#232958 '67 Airstream Overlander 27' '67GTO,'76TransAm,'52Chevy panel, 2000 Corvette "Lingenfelter"modified, '23 Grand Cherokee.