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Mod | | | Forums66 Topics128,073 Posts1,055,908 Members48,429 | | Most Online14,466
Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
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#60716 05/21/2006 10:02 PM | Joined: Nov 2000 Posts: 582 Shop Shark | | Shop Shark Joined: Nov 2000 Posts: 582 | Just finished setting up the mechanical linkages for my dual Holley Webers and Offy intake. Langdon's says to use the vacuum ports off the Holleys for the distributor advance (above the throttle plate). Vacuum line is going to Langdon's mini HEI with vac advance. I've seen where others have apparently used the vacuum port on the Offy. Any advantage of one over the other? If using the Holley port, I assume that you hook to both and not just one via a tee in the line. Want to set up the vacuum line(s) once and not redo it if one is better. | | |
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