I imagine this has been addressed, but I can't find it (at least not easily) through the forum search. I appreciate the indulgence of the true experts who frequent this site.
What, if anything, is the difference between 216 and early (41-53) 235 oil pans? I have one of each, and I cannot see any differences either in the overall dimensions or in the dimensions or depth of the troughs for the connecting rod dippers. I remember being told years ago that they are different, and I do have a pan from a splash-oil engine that is stamped "235" on the side, so I'm figuring there must be a difference.
Thanks in advance for shedding some light on this issue for me!
The troughs would have to be a little deeper (farther from the pan mounting flange) on the 235, as it has a slightly longer stroke by 3/16", so the troughs would need to be 3/32" deeper. Lay a straightedge across the pan flange and measure from there down to the troughs.
[on edit] The parts manual indicates there's no difference between engines on the spray oilers. The 235 for 54 went to full pressure oiling. See attached.
Last edited by klhansen; 04/03/20269:53 PM.
Kevin 1951 Chevy 3100 work truck Follow this saga in Project Journal Photos 1929 Ford pickup restored from the ground up. | 1929 Ford Special Coupe (First car) Busting rust since the mid-60's If you're smart enough to take it apart, you darn well better be smart enough to put it back together.
Tyler - Prior to 1954 there were a bunch of different part numbers for the various oil pans depending on what year Chevy Master Parts catalog you were referencing.
In the 1929-46 Catalog (1st pic) it shows 4 different oil pan part numbers, with the specific 235 pan noting the stamped "235" identification on the right side in it's description. Also indicates a regular 216 pan and a "deep" 216 pan with drain plugs in the rear while the earliest 1937-39 pans had the same bolt/mount pattern and pipes, but a side mounted drain plug.
The 2nd pic is from a 1929-48 Catalog which is then down to 3 different part numbers and no longer designates a separate pan for the 235's. Indicates "ALL" which would include both 216 and 235 engines.
The 3rd pic is from a 1929-49 Catalog and now shows 4 different part numbers (the 1949 has a new Part# for some reason???), but all retaining the same previous descriptions.
Finally the 4th pic shows the 1929-53 Catalog which has 3 part numbers listed again, but the 1953 pan has a different number, but no details that set it aside from the others.
As Kevin mentioned, the troughs are adjusted differently based on 216 or 235 applications per the applicable shop manual.
Sorry of this doesn't really clear up the muddy waters much, but maybe it does provide a little more info on your question.
~ Dan 1951 Chevy 3 window 3100 Follow this story in the DITY Gallery "My Grandpa Carl's Truck and How it Became Mine" 1966 Chevelle (Wife's Hot Rod) | 2013 Chevy Silverado (Current daily driver) US Army MSG Retired (1977-1998) | Com Fac Maint Lead Tech Retired (1998-2021)
Dan, Interesting that only the earlier parts catalogs indicated engine displacement in the listing. The original excerpt was from the 1929-54 parts catalog. Here's the 1929-1957 listing.
Kevin 1951 Chevy 3100 work truck Follow this saga in Project Journal Photos 1929 Ford pickup restored from the ground up. | 1929 Ford Special Coupe (First car) Busting rust since the mid-60's If you're smart enough to take it apart, you darn well better be smart enough to put it back together.
One of my Motor Magazine service manuals from the mid-1950s gives some dimensions for making a fixture to check the height of the rod dippers, using the oil pan rail of the block as a reference. Another part of the fixture checks the dimension to the top of the dipper troughs in the pan. The main concern is not how deep the dippers go into the trough- - - - -it's the relationship of the top pf the trough to the connecting rod body. They don't want the rods to hit the troughs. Since the dipper/trough intersection is only involved at idle, aiming the squirter tubes is also very important. If a tube is misaligned, the rod will get oiled at idle, but it will burn out the bearing material at cruise speed. Jerry
"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt! There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway Love your enemies and drive 'em nuts!
