| [GMCnet] We are 100% WRONG about engine tilt. Carb doesn't set level. But forward. [message #311809] |
Wed, 04 January 2017 00:22  |
BobDunahugh
Messages: 2465
Registered: October 2010
Location: Cedar Rapids, IA
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Tonight I want out to my GMC's nice warm house. ( It's 10 degrees outside. GMC's at 70. ) Anyway. My plan was to see if I could get my stock air filter to fit on the 454 TB. Set the carb, and TB on a board that was on the bench. ( to let the linkage not come in contact with the bench ) Then put the stock air cleaner on both. Put a spacer on the top of the TB. WHAT. Why is the air cleaner tilted toward the REAR. This can't be. As the carb base on the 403/455 should be level with the coach floor. Because the top of the air cleaner is level to the floor. But NO. The air cleaner has a tilt built into it. Thus the carb mounting surface of the intake manifold has to have a tilt toward the front. And yes it does. REALLY. So that means the 403/455 have to set level with the floor. Put a straight edge across the hatch opening. Checked the carb base. Then the valve covers. Engine sets dead level to the floor. This means that our carbs tilt forward. So now I need to hang my head down in shame. Bob Dunahugh
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