| [GMCnet] Answers to questions about FiTech installation [message #301202] |
Fri, 27 May 2016 17:02  |
glwgmc
Messages: 1014
Registered: June 2004
Karma:
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I am often asked off line to answer the following questions about FiTech installation on our GMCs so will post here in hopes that it will help others:
Manifold to throttle body -NAPA 735-4930
Carb linkage bushing 1/2 to 1/4 - Mr Gasket 6026 from NAPA
Carb linkage stud kit - Holley 20-38 from NAPA
The adapter is needed to keep the FiTech butterflys from hitting the web on the top of the motorhome manifold. If the web was not there, no adapter would be needed. If you ask FiTech they will say no adapter needed because the car manifolds they are familiar with do not have the web. The FiTech throttle body has mounting holes that do line up with our manifolds.
I cut off the downward projecting part of the linkage.
Whether or not you will need to raise the dog house to clear the stock air cleaner is a function of the thickness of your body vibration isolators.
We are driving the carbureted Royale on this trip. When we took the FiTech EFI equipped Clasco to Mexico last winter it ran really well. I will change over the Royale when we return as even a well adjusted carb cannot adapt as well to the constantly changing altitude experienced in AK.
I will be giving a detailed seminar on these new generation self learning EFI units at the four club rally in Coos Bay, OR, this coming October. If your experience is only with EFI taken from donor cars at a junk yard, or older design commercial systems, your frame of reference will be altered by these newer units that employ faster and more precise injectors, faster and more precise CPUs, more sophisticated software, and wide band O2 sensors to allow them to operate efficiently over a broader range of applications, like for use on our GMC motorhomes. I think you will find it an interesting look at updating your 40 year old GMC. Hope to see you there.
Jerry
Jerry Work
The Dovetail Joint
Fine furniture designed & hand crafted
in the 1907 former Masonic Temple building
in historic Kerby, OR
http://jerrywork.com
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Jerry & Sharon Work
78 Royale
Kerby, OR
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