Cross ram manifold, common plenum or two single planes?

[Paul_G]

Wondering if the cross ram is actually two single plane manifolds in one, or if the two carbs share a common plenum? I have never seen one opened.

Trying to find a way to verify that both carbs are synched together, and pulling equally. Would a vacuum gauge connected under each individual carb show a difference in vacuum if one carb is open more than the other.

 

[Fran Blacker]

On 426Hemi there is a cross over passage. Uni-syn is for multi carb synchronizing. For a 4 barrel you need a carb cover with a hole for uni-syn.

 

[ruffcut]

Check out Dan Dvorak's web cite. I bought a carb syncronizer from him years ago.

 

[33 IMP]

Maxwedge crossram is common plenum. The old long rams used a rubber hose as a crossover to connect both sides.

 

[glorydays]

you can build your own syncro… rtv, uni sync, hole saw,and carb hat super easy... 4235 and 4236 holleys do not a vacuum port at the base...