can anyone post a picture of what twin holley 94's look like with a progressive linkage fitted???????thanks adrian
This is my 312 tri power done by dickster27. Eliminate the front carb and linkage and you have your twin progressive linkage Not too hard to see.
Why not? If you think about it any regular 4 barrel carb is progressive. Whether its mechanical or vacuum secondaries, you run on the front 2 barrels then the rear two open PROGRESSIVELY by mechanical or vacuum operated means.
I agree with Dale. Running progressive 94's on a 2X2 manifold is plain silly, with NO benifit, only added work, trouble and cost. You will not see any milage improvement, if that's what you're after. Running progressive 2s on a 4 barrel manifold with an adaptor makes some sense, but a 4 brl would run better, 'cause it's bigger! Holley 94's only flow about 160-180 cfm, something many don't realize. Set them up "straight" and you'll like them much better.
Compare the manifold of a typical 2 x 2 with a 4 BBL and you'll see they are not the same. Flathead 4 BBLs have a big plenum under the carb-it's exposed to either the primaries or all four throats. 2 x 2s don't have that common plenum-if you open them progressively you're screwing up the mixture/distribution from front to back.