not sure on their size, I had them laying around and stuck them on there for now, I want the holley 600CFP vacuum secondaries to run with .
beings I bought a new 1963 SS plymouth, I'd have to say I'm a cross ram fan as well, I also had a '61 plymouth Savoy with a 440 4 speed and long ram, fun car.
I have a buddy with a long ram setup with linkage that he'd like to move.
I don't think the long rams need be modified going from B/RB. I sold my last set of long rams for $60.00 maybe should have kept them, the early rams have zero power over 4800/5000RPM, possibly the turbo's would clean that up, the 63/64 with divider removed are basically the same runner length and plenum size as the superstock manifolds. I ran the correct carbs on the long rams which ran well, I borrowed of the short/longrams and with the same carbs would barely rtun and no acceleration, they require the same 4 bbls as the superstock manifolds, critical is jetting per factory specs.
