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Discussion Starter · #1 ·
Need to move my regulator to the front of the carb to allow better access to the valve cover. Anyone know off hand what the center to center bolt spacing is for the two front studs? Single carb, traditional mounting(not sideways like some tunnel rams allow...)
 

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E-7 Sheepdog (ret)
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The standard "square-bore" for 4150's et-all is 5 3/16" x 5 5/8", according to my Holley manual.
 

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E-7 Sheepdog (ret)
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6,834 Posts
Yes, the narrower dimention is across the ends, wider is down the side.
 
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