Rear Axle Splines - Are there different splines?


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By Jack Groat - 4 Years Ago
I found a higher ratio rear end for my '56 Victoria from one of the members here on y-blocks forever.  Doing some research to find out what my current ratio is (V-8 automatic as originally purchased) there was a statement made on another website that the '56 exclusively had fine spline for their axle shafts.  I have never heard such a thing before.  I made a call to a knowledgeable friend and he said that statement is "hogwash".

OK, guys.  I know you know the answer.   Does the '56 have different splines on their axles?
By carl - 4 Years Ago
Early 55s had course splines and i think some later 55s had the fine splines the 56 axles were fine
.Jack i will count the splines on both for you in the next couple days,also will check the 4.11 splines   Carl

By Hoosier Hurricane - 4 Years Ago
'49 to early '55 had 17 splines, late '55 and '56 had 28 splines.
By carl - 4 Years Ago
John is correct  Carl
By blocky - 4 Years Ago
positive here in oz we had 2 types
By paul2748 - 4 Years Ago
A 56 with an automatic usually had a 3.31 rear ratio.  Check the shop manual.

By carl - 4 Years Ago
1956 cars with auto trans had 3.22 gears,56 police interceptor cars with auto trans had 3.31 gears  recheck your manual Paul    Carl