Rear diff gear ratio identifing
Thread Starter
Instructor
Joined: Oct 2008
Posts: 176
Likes: 1
Rear diff gear ratio identifing
Just asking if someone has a way to tell rear diff ratio by rpm compared to speed.
I know that the casing has OA stamped on it indicating it has3.08 (77vett)
However, the previous owner may have changed it.
Any help is appreciated.
If someone knows their gear ratio and has an automatic 3 speed could share the rpm reading at 60 mph this might help me. If this idea is
don't be afraid to let me know that too.
I know that the casing has OA stamped on it indicating it has3.08 (77vett)
However, the previous owner may have changed it.
Any help is appreciated.
If someone knows their gear ratio and has an automatic 3 speed could share the rpm reading at 60 mph this might help me. If this idea is
don't be afraid to let me know that too.
Safety Car
Joined: Oct 2006
Posts: 3,993
Likes: 9
From: Gig Harbor WA
With a TH350 or TH400 with 1:1 ratio, with 3.08 rear you will be turning 2300 rpm's at 60 mph
http://2004r.com/speedoCalc/rpmcalc.shtml
http://2004r.com/speedoCalc/rpmcalc.shtml
