# Timming gear problems in a 350 four bolt main

**URL:** <https://community.cartalk.com/t/timming-gear-problems-in-a-350-four-bolt-main/2644>\
**Category:** Maintenance/Repairs\
**Created:** [August 5, 2007, 1:23am UTC](https://community.cartalk.com/t/timming-gear-problems-in-a-350-four-bolt-main/2644 "2007-08-05T01:23:40Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![jeremycondray](https://avatars.discourse-cdn.com/v4/letter/j/7ea924/32.png) [@jeremycondray](https://community.cartalk.com/u/jeremycondray)\
**Post date:** [August 5, 2007, 1:23am UTC](https://community.cartalk.com/t/timming-gear-problems-in-a-350-four-bolt-main/2644/1 "2007-08-05T01:23:40Z")

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I have a 1981 monte carlo. I have dropped a 350 4 bolt main into it. I replaced the timming chain for gears. I thought it was the gears rubbing the timming cover and when i pulled the cover off I found that they were. I fixed the problem of the gears rubbing by beating the cover off a little and adding 2 extra gaskets to space it away from the gears. When I start the car and let it idle it doen’t make a noise, but when I rev it up it sounds like it is rubbing somewhere. Could it be the hormonic balancer or have you heard of any problem like this and know how I can fix it?

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**Author:** ![system](https://global.discourse-cdn.com/cartalk/original/3X/1/d/1d47c66a543aa6c5a7873bb2320858f978ff52ed.png) [@system](https://community.cartalk.com/u/system)\
**Post date:** [August 5, 2007, 1:47am UTC](https://community.cartalk.com/t/timming-gear-problems-in-a-350-four-bolt-main/2644/2 "2007-08-05T01:47:52Z")

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Are you sure it is not the typical annoying noise made by gear drive engines?

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**Author:** ![system](https://global.discourse-cdn.com/cartalk/original/3X/1/d/1d47c66a543aa6c5a7873bb2320858f978ff52ed.png) [@system](https://community.cartalk.com/u/system)\
**Post date:** [August 5, 2007, 2:48am UTC](https://community.cartalk.com/t/timming-gear-problems-in-a-350-four-bolt-main/2644/3 "2007-08-05T02:48:55Z")

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What is the exact manufacturer and part number of the gear set you installed?

Are you running a cam button to limit cam walk?

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**Author:** ![pleasedodgevan](https://avatars.discourse-cdn.com/v4/letter/p/51bf81/32.png) [@pleasedodgevan](https://community.cartalk.com/u/pleasedodgevan)\
**Post date:** [August 5, 2007, 5:11am UTC](https://community.cartalk.com/t/timming-gear-problems-in-a-350-four-bolt-main/2644/4 "2007-08-05T05:11:02Z")

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Sometimes you have to get a cover that is designed for what you install.