# Chevy/GM 3100 engines

**URL:** <https://community.cartalk.com/t/chevy-gm-3100-engines/24147>\
**Category:** Maintenance/Repairs\
**Created:** [December 31, 2008, 7:00am UTC](https://community.cartalk.com/t/chevy-gm-3100-engines/24147 "2008-12-31T07:00:37Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![ggrakerdink](https://avatars.discourse-cdn.com/v4/letter/g/ecc23a/32.png) [@ggrakerdink](https://community.cartalk.com/u/ggrakerdink)\
**Post date:** [December 31, 2008, 7:00am UTC](https://community.cartalk.com/t/chevy-gm-3100-engines/24147/1 "2008-12-31T07:00:37Z")

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Question to “mountain bike” or anyone else?  
  
 I have a 96 Pontiac Gran Am with a 3100 engine. Cam shaft broke and the cam bearing or bearings spun. Found 2 boneyard engines and both have spun bearings and 1 has cam also broken. I know that oversized bearing for this model is available but can’t find who has a line boring machine for this particular application. Must be someone out there who run across this? Any suggestions other than another boneyard, remanufactured, or just a plain engine block replacement. Anyone know source of a remanufactured block only?  
  
 Thanks, RockyDocky

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**Author:** ![oldschool](https://avatars.discourse-cdn.com/v4/letter/o/e19adc/32.png) [@oldschool](https://community.cartalk.com/u/oldschool)\
**Post date:** [December 31, 2008, 1:49pm UTC](https://community.cartalk.com/t/chevy-gm-3100-engines/24147/2 "2008-12-31T13:49:32Z")

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Most times it is best to “go with the flow”. There are millions of these 3.1 out there.

Is the source of the bearings any help in finding a machine shop?