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Removing air pump question on '89 454....
Awesome information, ill look into all of it.- 89Silverado4x4
- Post #11
- Forum: Engine Performance + Maintenance
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Removing air pump question on '89 454....
Did you end up doing it? and how? i have a 89 454 1 ton and that smog plug is really annoying and im hoping to do headers soon.- 89Silverado4x4
- Post #9
- Forum: Engine Performance + Maintenance
