Hello All,

I have seen a few 2 x 4V intakes set up with the carbs sideways, and many tunnel rams set up that way as well. What is the advantage of this?

Also, more importantly, concerning my FE project I would like some responses to this: Say I take my split plenum single plane 2 x 4V intake and mount my Holleys side ways with the linkage of each carb facing each other. I will be running these carbs in sync with NON-PROGRESSIVE linkage so I would have a primary curcuit for each bank. Will this run okay, or am I just setting myself up to make cylinders 1, 2, 7, & 8 run lean while leaving cylinders 3, 4, 5, & 6 to run rich?

I would like to do this for many reasons, but don't want to do so at the expense of a fuel distribution problem. Would adding a 1" open spacer, or possibly cutting away part of the plenum divider help this situation any? Any and all comments are welcomed and appreciated.

Thanks,
Nathan

 

I don't know much about this setup but I do believe they mount the holleys sideways otherwise they wouldn't fit. The carb is wider than it is longer. I would think it would casue some cylinders to run leaner at part throttle but tunnel rams weren't made to run at part throttle anyway. I would use to mechanical secondary carbs if it were me. If your manifold is set up to run the holleys inline instead of sideways you will have to run them this way. The mounting bolts for the carb are arranged in a rectangle, not a square so you can't mount them differently.

 

The Holley carbs they use ( usually 660's ) don't have secondaries per se. Everything opens simultaneously. I don't think you can mount two Holleys inline like Carters/Edelbrocks. They're just too long.

 

In the 60's, Ford mounted a pair of 4160 Holley carbs inline on the 427 high rise intake manifold. The 4160's had the secondary metering plate, not the big metering block. Look at the 510-0-1850C in Jegs for an idea. These carbs were mounted backwards in order to clear the distributor, and used a passenger side linkage.

 

www.carlsfordparts.com has pics of complete intakes with carbs. Just click to enter then click Induction.

I recommend inline mounting as opposed to sideways. As mentioned before the sideways mounting is for full throttle use. Otherwise, the engine "bucks" during part throttle use because the engine is getting mixed signals from the carbs.

Josh

 

Looky here for pics of a '66 or '67 dual quad:
http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=1873000441

The price is steep-especially for an opening bid.