This topic contains 3 replies, has 2 voices, and was last updated by 
Richard Kirshy 6 months, 3 weeks ago.
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Topic
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i have a 1989 gmc r3500 with 454 with almost 300000 miles on it and there is a noise coming from the timing chain cover so i think its going bad.i was wondering should i replace it with a standard chain set or a double roller set?also what chain set makers should i look at and witch should i stay away from?Tia.
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Considering the mileage you got out of the OEM chain.
I would stick with that.
who makes om chains for gms?
A google search … 1989 gmc r3500 OEM timing chain
https://www.gmpartsgiant.com/oem-1989-gmc-r3500-timing_chain.html
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