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Old 04-15-2018, 01:31 PM
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Tom Wells Tom Wells is offline
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Join Date: Mar 2000
Location: St. Augustine, FL
Cobra Make, Engine: E-M / Power Performance / 521 stroker / Holley HP EFI
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Brian,

My memory may have it a bit inaccurately but a Holley throttle body is somewhere around 1-1/2" shorter than a carburetor.

The MPFI throttle body measures 2" from manifold flange to the air cleaner flange. The newer "all-in-one" EFI units measure from 3" to 3-1/4", closer to a carb's height.

With the MPFI, the injectors are in the manifold vs in the throttle body for the all-in-one units.

Overall height also depends on the type of elbow (e.g., round or oval-shaped) you choose.

Hope this helps,

Tom
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