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oil pan interchange 216 - early 235?
#1336475 Thu Dec 05 2019 02:03 AM
Joined: Aug 2003
Posts: 95
T
Shop Shark
I have a 1950, stock 235--low pressure, babbited, mechanical lifters. Today when pulling into the garage I noticed a significant oil trail. Take a look under the car and see that it's pouring right out the bottom of the oil pan! It's not a matter of the plug being lose--this is right in the middle of the pan. It must be rust out--this is a MIchigan vehicle, after all, and the guy I bought it from had welded in new floor pans, so I know there was significant rust on the underside.

I could try to epoxy this hole shut, but I have a 216 engine with a cracked block sitting in my garage. I know these engines are both low oil pressure systems with troughs in the pan for the dippers on the rods; my question is, are the 216 and early 235 oil pans identical? I.e. could I simply swap the 216 pan onto the 235 and be good to go (assuming the trough alignment on the 216 is okay)?

Thanks for any input any of yous guys might have on this!

Last edited by Tiny; Thu Dec 05 2019 12:44 PM.

1953 3600 Pickup
1946 Fleetline Aerosedan
1950 Fleetine Deluxe w/ Powerglide
Re: oil pan interchange 216 - early 235?
Tyler Watts #1336500 Thu Dec 05 2019 11:30 AM
Joined: Sep 2001
Posts: 29,534
ace skiver
"I have a 1950 Fleetline Deluxe with Powerglide. Stock 235--low pressure, babbited, mechanical lifters."

Is that reference to mechanical lifters a mis-type?

If not, did you (or a previous owner) change the lifters to mechanical/solid?
The Powerglide engines in 1950 had hydraulic lifters.


Have you adjusted the lifters? What technique did you use?


Tim
1954Advance-Design.com
1954 3106 Carryall Suburban - part of the family for 49 years
1954 3104 5-window pickup w/Hydra-Matic - part of the family for 15 years
Z-series (54/55) GMC 350 (2-ton) COE - now part of Dave's family
- If you have to stomp on your foot-pedal starter, either you, or your starter, or your engine, has a problem.
- The 216 and early 235 engine are not "splash oilers" - this is a splash oiler.
Re: oil pan interchange 216 - early 235?
Tyler Watts #1336513 Thu Dec 05 2019 01:46 PM
Joined: Aug 2003
Posts: 95
T
Shop Shark
Tim,

Thanks for that info! I thought I had read that hydraulic lifters did not appear until the '53 Powerglide 235 with the full-pressure oiling; after checking the link you shared (and confirming with the 1950 car shop manual supplement), I stand corrected.

Strange, though: the valve train on this engine is noisy as hell, though (I just got it running about a week ago and haven't adjusted the tappets yet), so that also fed into my assumption that they were mechanical. Perhaps I have a collapsed hydraulic lifter or two in there?

At any rate, I've got to patch up or replace that oil pan before I get back to tune-up work!


1953 3600 Pickup
1946 Fleetline Aerosedan
1950 Fleetine Deluxe w/ Powerglide
Re: oil pan interchange 216 - early 235?
Tyler Watts #1336516 Thu Dec 05 2019 02:04 PM
Joined: Mar 2002
Posts: 8,948
Master Gabster
I seem to remember that the oil trough measuring tool was different for the 216 and the 235. To me that would suggest that the pan is different too.


1951 GMC 1 Ton Flatbed -- It is finally on the road and what a great time I have driving it!
1951 1 Ton Completed


My Chevy Master 4 Door is on the Road!
Re: oil pan interchange 216 - early 235?
Tyler Watts #1336530 Thu Dec 05 2019 04:11 PM
Joined: Sep 2001
Posts: 29,534
ace skiver
Here is an oil pan "interchange list".

It looks like many 1952 and earlier 235 & 216s interchanged?

37-39 same
40-52 same (except for Powerglide)


Tim
1954Advance-Design.com
1954 3106 Carryall Suburban - part of the family for 49 years
1954 3104 5-window pickup w/Hydra-Matic - part of the family for 15 years
Z-series (54/55) GMC 350 (2-ton) COE - now part of Dave's family
- If you have to stomp on your foot-pedal starter, either you, or your starter, or your engine, has a problem.
- The 216 and early 235 engine are not "splash oilers" - this is a splash oiler.
Re: oil pan interchange 216 - early 235?
Tyler Watts #1336544 Thu Dec 05 2019 05:25 PM
Joined: Feb 2004
Posts: 19,896
H
Boltergeist
Since the 235 has a longer stroke, the height of the dipper troughs on the spray-oiler engines will be different between 216 and 235 engines. A 216 pan on a 235 will make the rod dippers hit the troughs, and a 235 pan on a 216 will end up with oil-starved rods at idle. To avoid problems, dipper pans for 235's have "235" embossed into the bottom of the pan in numerals about 2" tall.
Jerry


The murder victim was drowned in a bathtub full of Rice Krispies and milk.
The coroner blamed the crime on a cereal killer!

Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
Re: oil pan interchange 216 - early 235?
Tyler Watts #1336577 Thu Dec 05 2019 09:34 PM
Joined: Jan 2001
Posts: 4,897
P
Shop Shark
As you can see in the parts book Tim linked to, Chevrolet sold the same oil pan to fit 216s, and dipper 235s.
The factory 1941-49 235 pan was embossed with the 235 stamping as Jerry mentioned.

What the parts book does not say is that the troughs would need to be adjusted to match the engine it is installed on.


See the USA in your vintage Chevrolet!
My Blog
Re: oil pan interchange 216 - early 235?
Tyler Watts #1336583 Thu Dec 05 2019 10:31 PM
Joined: Sep 2001
Posts: 29,534
ace skiver
Thanks, Dave

Maybe it should be noted that some vendors might rent the "aiming tool/gauge)?


Tim
1954Advance-Design.com
1954 3106 Carryall Suburban - part of the family for 49 years
1954 3104 5-window pickup w/Hydra-Matic - part of the family for 15 years
Z-series (54/55) GMC 350 (2-ton) COE - now part of Dave's family
- If you have to stomp on your foot-pedal starter, either you, or your starter, or your engine, has a problem.
- The 216 and early 235 engine are not "splash oilers" - this is a splash oiler.
Re: oil pan interchange 216 - early 235?
Tyler Watts #1336604 Fri Dec 06 2019 01:42 AM
Joined: Aug 2003
Posts: 95
T
Shop Shark
Excellent info, gents--very much appreciated!

I was thinking there might be some sizing differences in the troughs, and Jerry confirmed my suspicion. Very well--it's going to be JB Weld for now, and I'll wait for a permanent repair or replacement until things warm up next spring.

Thanks guys!

PS: The good news is, I caught this leak early. I had at least 3, maybe 4 quarts in the oil change pan I slid under the car as soon as I spotted the leak, so I know I did not oil starve the engine--thanks to God for that!

Last edited by Tyler Watts; Fri Dec 06 2019 01:51 AM.

1953 3600 Pickup
1946 Fleetline Aerosedan
1950 Fleetine Deluxe w/ Powerglide
Re: oil pan interchange 216 - early 235?
Tyler Watts #1336610 Fri Dec 06 2019 01:59 AM
Joined: Feb 2004
Posts: 19,896
H
Boltergeist
Sealing an oil pan leak with JB Weld is going to be difficult at best- - - - -getting the pan clean and dry enough for the epoxy to get a good seal is a real challenge. Are you dealing with a crack, a rust pinhole, or what? Rust holes in particular are problematic, as the hole on the outside is usually the "tip of the iceberg" with a much larger thin spot on the inside. Remove the pan and get it completely degreased inside and out, and maybe get the area around the leak beadblasted to give the metal some "tooth" for the epoxy to grab onto.
Jerry


The murder victim was drowned in a bathtub full of Rice Krispies and milk.
The coroner blamed the crime on a cereal killer!

Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
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