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I was looking at purchasing a spare transmission for my 32 and came across one for a 33. Both have the free wheeling unit so I was wondering if there is any other differences? Dose anyone know the correct part number on the side of the case for a 33?
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The parts book shows the case as being the same from 1932-1936 with syncromesh. (that would exclude Standards).
As far as the gears go they have different part umbers due to a slight ratio change in 1933. Also the early 1932 had all straight cut gears (very noisey 2nd gear) and late had helical gears (silent 2nd).
From what I find the comp;ete 1933 transmission will fit a 1932 as any differences is i the gears only. The advantage would be if you ever needed a gear the 1933 (and up) style would be easier to find than the two differnt selection of gears found in 1932 only.
Gene Schneider
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The low gear ratio in 1932 was 3.17 to 1. iN 1933 3.08.
iN 1932 2ND GEAR WAS 1.82 TO 1 AND IN 1933 1.70 TO 1. aLSO THE SYNCRONIZING CONE CHANGED IN SIZE SLIGHTLY.
Gene Schneider
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I must have the early transmission in my 32 as second gear has the whine. What number would be on the case to identify the transmission on being from a 33.
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The case casting number would be the same from 1932-1936. There should be a date code in rasied letters like 8 03 or so on the case.
It has to be from a 1932 or 1933 due to having freewheeling.
Other wise you can remove the top cover and count the number of teeth on th e cluster gear. The '32 will have 24-13-20 and the '33 25-13-21.
Last edited by Chev Nut; 10/13/16 10:33 PM.
Gene Schneider
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Did all 33s have free wheeling?
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All 1933 passenger transmissions had freewheeling. The 1/2 ton trucks had the same transmission without freewheeling.
How Sweet the roar of a Chevy four!
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This all really great information.
Thanks again Guys
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Just a note the 1933 Standard had a non-syncronized smaller transmission without freewheeling.
I believe you could install a 1934-1936 Master transmission in a 1933 and eleminate the freewheeling.
Gene Schneider
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Thanks Gene for making the correction. I wasn't thinking about the '33 Standard. Sorry Joe, it is not the first thing I think of with '33s. So my post should have been "All '33 Master/Eagle passenger transmissions would have freewheeling. The '33 1/2 ton trucks had the same transmission without freewheeling."
How Sweet the roar of a Chevy four!
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For some reason (like low production) the 1933 Standard is like a forgotten cousin.
I forgot about the truck also.
Gene Schneider
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Tech Advisor ChatMaster - 25,000
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The Mangy Old Mutt
"If It's Not Junk.....It's Not Treasure!"
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No problem guys. I'm used to owning the "unknown" Chevrolets...Joe
See America's First...Chevrolet
1931 Sedan Delivery 31570
1933 Standard Sports Coupe 33628.
1934 Master Sedan Delivery Canadian 177/34570
1968 Z/28 Camaro
1969 SS 396 Camaro
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You have to give Chevrolet credit. The Standard had a slow start in 1933 and was a good seller by 1935 when it looked almost obsolete compared to many 1935 cars.
Gene Schneider
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