View Full Version : rear gear ratio

55 prez
05-07-2008, 12:58 PM
What effect on performance would a change of ratio from 3:54 to 3:31 have on a 259 cid automatic in my '55 President 4dr?

05-07-2008, 01:02 PM
A little slower off the line, and better gas mileage.....Better mileage, too, if you can stay out of the secondaries.

I'm considering installing a 3.07 in mine, but it's got a 289.

Tom Bredehoft
'53 Commander Coupe
'55 President (6H Y6) State Sedan
(Under Construction) 197 hrs.
'05 Legacy Ltd Wagon
All Indiana built cars

05-07-2008, 01:08 PM
According to Studebaker's own chart here:


You will get .7 (7 tenths) of a mile per gallon better at 60 MPH.

You will accelerate slower, but have less noise.

Studebakers Northwest
Ferndale, WA