Using any of the many on-line RPM calculators I came up with 2739 when plugging in the following;

1:1 trans (3rd gear ratio)

3.90:1 rear

90.25 tire circumference = 28.7" diameter

60 mph

2739 rpm

Mike B smile

EDIT, I was typing while everyone else was up-loading, so this is all a repeat...lol!

Last edited by Mike B; 09/10/2023 1:51 AM.
Mike Boteler

1956 Chevy 3100 Resto Rod
1952 Willys M38 Army Jeep
1983 Jeep CJ7 Laredo
1984 Jeep CJ7
+++++
Silver Spring, MD