The Carburetor Shop won't sell individual jets separated from a kit. Been there and tried that. The fella who attends the phone will not sell you a jet/kit that isn't listed for your carb #.
I'm running a stock manifold with a partition welded inside the heater box to split the exhaust flow. Two outlets are welded to the manifold at mid point in the two separations of the exhaust manifold. My application needed outlets to the side, but you can cut outlets anywhere you wish.
If you're going to street the engine, heat is nice. My offy manifold is bolted to the functional heater box to utilize the heat.
All B&B's are not created equal. There are many different B&B configurations out there. Two different venturi/butterfly diameters, numerous stock jetting orifices depending on original application, and for reasons beyond my understanding - different spacer plates between the cast butterfly housing and the venturi. In addition: different step up jet spring tensions and accelerator pump CC's. Make sure that your two B&B have matching #'s on the rib extending down from the breather to the fuel bowl, this rib will contain all the numeric data associated with the stock setup on the carb. If they match - you're way ahead. If they don't, you've got some work to do.
All B&B carbs have an external vacuum port located in the cast iron butterfly base. I have mine capped off because I don't run a vacuum advance on my distributor. I would not run a vacuum off any individual carb, instead I would take the plug out of the offy manifold near the rear carb and run my advance from it. Another option I would prefer would be to run an equalization line from each carb and run the advance from a "T".
I may have been hyper-attentive to my little B&B's, but I am getting 6000 rpm out of them.
Hudson
