Did find three suppliers of 4 inch throttle bodies for the 20b. These

are

105 mm each (4.17"). Accufab number AB-F105TBOR, Holley has three, and
Edelbroke Universal racing #3877. The Accufab appears to be the smallest
footprint and possibly the lightest. Or am I missing something?

Judging from a web search and until I can spend more time in the salvage
yards, 105 mm throttle bodies were never stock on any engines. I would

like

to be wrong and save that cash for other things.

Wade Bush
Flying 20b to be

They are simple to make Wade. Here is a nice large one made by Chuck
Dunlap. You could also weld it up from aluminum tubing and plate.
Most commercial ones are way more complicated than needed in our
application.

Paul Lamar

wadebush wrote:

Good point Paul. I'll explore making one or buying one from Chuck.
Wade

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