Re: 1970 396 L78 & 454 LS6 Holley Carburetor 4492
Matt;
Double-check that baseplate, it looks like a 3310 style unit--but the primary shaft does appear to be a correct `70 unit. The correct base will have a stepped 3/8' vacuum tube on the pass. side rear and should have a notch cast just ahead of the drivers rear carb mounting hole to locate the throttle tab.
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