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Jul 21st, 2025 | | | | Joined: Apr 2009 Posts: 14 Apprentice | | Apprentice Joined: Apr 2009 Posts: 14 | Greetings all. I have a '41 Chevy half ton that has a 216 in it. I've been driving it for a year with no problems and then BAM! On my first real road trip in her I started overheating and came to find out that the water pump needed to be replaced. Towed it home and made that fix, problem solved... not exactly. Since that overheating I am now getting a terrible metal "clunking" sound when I accelerate and it dumps smoke out the filler tube. Some buddies said I may have spun a rod and that I might need to replace the main bearings and rod bearings. Does this sound right to you guys? Any insight you all can give would be much appreciated. | | | | | Joined: Feb 2004 Posts: 28,674 Kettle Custodian (pot stirrer) | | Kettle Custodian (pot stirrer) Joined: Feb 2004 Posts: 28,674 | It sounds more like a damaged piston and/or piston rings that have lost their tension due to the overheating. At any rate, it's major overhaul time, so pull the engine out and get busy! This might be a good time to upgrade to a 54-up 235 engine, unless you're determined to keep it bone-stock. It's very close to a bolt-in swap, with only a few minor changes to make.
Jerry
Last edited by Hotrod Lincoln; 10/12/2010 8:54 PM.
"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
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| | | | | Joined: Apr 2009 Posts: 14 Apprentice | | Apprentice Joined: Apr 2009 Posts: 14 | I've been considering an upgrade to a 235...might be the time to make it happen. It's my daily driver at the moment, so I got to figure out something quick.
Last edited by mrporth; 10/12/2010 9:17 PM.
| | | | | Joined: Oct 2010 Posts: 21 Apprentice | | Apprentice Joined: Oct 2010 Posts: 21 | Check your Compression. I had an inline Chrysler 226 that did what your describing, not from overheating once though. The Head backed off the block. | | | | | Joined: Apr 2009 Posts: 14 Apprentice | | Apprentice Joined: Apr 2009 Posts: 14 | They are all at about 90#. Took the oil pan off last night and there was nothing hanging down or in the bottom of the pan  . The second rod had a lot of left to right motion. Could this be the cause of my noise? I plan on taking the cap off tonight and looking at the bearing. | | | | | Joined: Oct 2010 Posts: 21 New Guy | | New Guy Joined: Oct 2010 Posts: 21 | I have a 1940 216 that is was rebuilt. I would like to find a home for it. I would not go to the 235 Chevy but move to the 230 250 or the 292 motor. I am in So Cal. Thank You Handtight
1940 Chevy 1 1/2 ton, 1959 Chevy 1/2 ton, 1966 Chevy C20.
I can explain it to you but I can't help you understand it.
| | | | | Joined: Apr 2009 Posts: 14 Apprentice | | Apprentice Joined: Apr 2009 Posts: 14 | Well, that rod that was moving left to right had flattened out the rod bearing...it was toast. I started to check the others and they look good. Might only be that one, but at the same time I did find a piston that was sliding up and down with one finger...no good. Think I'm going to pull the engine and take it all apart...ugggg. | | |
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