1989 Chevy K2500 TBI Setup - What's Your Problem?
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Trans-Dapt sells a Swirl-Torque TBI spacer that fits between the intake manifold and the throttle body. For your truck, the PN is 2533 and through Summit Racing it is only $47.88. Trans-Dapt and others also sell a simple little injector spacer gasket that moves the injector pod upward roughly 1/4 inch, which also improves airflow through the throttle body. View Related Article
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