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Mod | | | Forums66 Topics128,201 Posts1,057,276 Members48,466 | | Most Online14,466
Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
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| | | | Joined: Aug 2018 Posts: 46 Wrench Fetcher | | Wrench Fetcher Joined: Aug 2018 Posts: 46 | Is there a way to tell by looking from the outside if a Chevy has had an engine swap to a newer engine that has insert bearings?
1950 GMC 1/2 Ton Long Box
228-Zenith carb- SM420-bendix brakes
| | | | | Joined: Aug 2012 Posts: 1,214 Shop Shark | | Shop Shark Joined: Aug 2012 Posts: 1,214 | Yes. The serial number stamped on the block will identify the size, year and where manufactured and from that info it can be determined if the engine is a full pressure engine with insert bearings or an earlier splash/pressure engine with babbitt bearings.
The side panel size is another indicator but it's not fool proof, the engine serial number is the best way to tell next to dropping the oil pan.
Good luck | | | | | Joined: Mar 2010 Posts: 10,308 Renaissance Man | | Renaissance Man Joined: Mar 2010 Posts: 10,308 | If there is no oil distributor cover on the left side of the engine, you have insert bearings.
1952 5-window - return to "as built" condition | 1950 3100 with a 235 and a T-5 transmission
| | | | | Joined: Oct 2006 Posts: 1,847 'Bolter | | 'Bolter Joined: Oct 2006 Posts: 1,847 | unless the rods have been converted by someone else.
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