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I have a 73 dodge with 2 barrel 400 hundred in it. Does anyone know if a tbi mounting bolt pattern is the same as the or is an adapter going to have to be fabricated? Any and all help will be greatly apprietiated. And does anyone know of someone who might have done this swap. Thanks all.
 
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The OEM Dodge TBI patterm is offset, so an adapter would be required. The aftermarket Holley 2V TBI has a starndard retangular pattern that required a basic adapter to fit a 4V intake.
 

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holley made 2 basic throttle bodies. they made a dodge version. and they made a chevy version.

only difference is bolt pattern (well small details vary per application injector size thorttle size ect ect)

holly took the chevy throttle body, built a simple analog computer threw in the adapter plate to adapt it to 4bbl intake and called it Projection 2D.
 
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