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Author Topic: 454 egr delete/ issues/ bypass  (Read 4096 times)

Offline thelincolnguy

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454 egr delete/ issues/ bypass
« on: July 30, 2016, 08:08:32 AM »
Hello everyone. I have a 1986 chevy c30 single cab 454 with the awful egr system. As i am aware this system has two pumps. The bottom side pump being the smog pump. I need to know if anyone has the part number to a serpentine belt that will bypass the smog pump after i remove the pully. (Will not clear otherwise) my smog pump has locked up and wont spin until i get on the highway. Going thru belts like crazy and plan to do a full egr delete in the future. (New heads,intake, headers, etc. ) any easy temporary fix is helpful as this truck is my daily driver (65 miles round trip a day)
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Offline VileZambonie

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Re: 454 egr delete/ issues/ bypass
« Reply #1 on: July 30, 2016, 08:45:47 AM »
Your EGR and your A.I.R. pump are two different systems. Just look up your belt by application with or without ac, with or without A.I.R.

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74 GMC, 75 K5, 84 GMC, 85 K20, 86 k20, 79 K10

Offline thelincolnguy

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Re: 454 egr delete/ issues/ bypass
« Reply #2 on: July 30, 2016, 11:42:35 AM »
The a.i.r. Pump is the one causing problems. And my truck has a/c. the serpentine belt is the one that needs to be shorter
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Thelincolnguy

Offline VileZambonie

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Re: 454 egr delete/ issues/ bypass
« Reply #3 on: July 30, 2016, 03:12:25 PM »
Just run a string around the pulleys and measure. Try a 530K6
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              ⌠ŻŻŻŻŻ'   [☼===☼]
              `()_);-;()_)--o--)_)

74 GMC, 75 K5, 84 GMC, 85 K20, 86 k20, 79 K10

Offline thelincolnguy

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Re: 454 egr delete/ issues/ bypass
« Reply #4 on: July 30, 2016, 04:01:40 PM »
Ok i will try it. Should i put a string around it with the current belt on and tensioned? The alternator tensions it. No auto tensioner
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Offline VileZambonie

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Re: 454 egr delete/ issues/ bypass
« Reply #5 on: July 30, 2016, 06:10:45 PM »
Yes
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                         /  _ _ _\_
              ⌠ŻŻŻŻŻ'   [☼===☼]
              `()_);-;()_)--o--)_)

74 GMC, 75 K5, 84 GMC, 85 K20, 86 k20, 79 K10
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