2400 cfm is the "capability" of the carbs. If you put a low meter on each individual "throat" you will find less than 100 cfm per cylinder
actually" flowing. ( more like 75) Reversion , lack of a common plenum , etc hurt the flow . BUT if the carb was any smaller , it would hurt horsepower. Ford realized in '62 that 48s were too small for high rpm use at Indy for the 255 pushrod engine and switched to 58s. 48s on a 427 was like a 750 single four , so some manifolds were made for 58s though there weren't enough carbs to go around. 58s on a SOHC was a loser too. Not enough cfm because of the lack of a common plenum for all the cylinders to draw from. IR sucks , literally. Your Pantera would go faster with 58s too. Just about the right size. Modern sprint car guys now use 3" butterflies ( or more) on their fuel injection systems and make 900 hp.
Two Webers on a "common plenum , non IR" manifold would be what Ford was trying to do with the Autolite Inline. I plan on switching my 331 to a Vic Jr single four to see how much faster it is than the old school dual quad.
Changing the firing order is not a big deal power wise on a dual plane intake.
Randy
Go faster? I need to hold on now!
I know of only 4 sets of 58's. Bob Gingold has one of them still in the original wood case, all serial numbered concurrently. They came in what looks like a display case all lined in velvet like a Proof Coin set does from South Africa.
The "Pantera" manifolds are "tuned" for 51mm. Lots of graphs with all sorts of bright colors all circle and intersect right at that point BUT the consideration is for a 6,800rpm max.
What actually flows through an engine, I personally don't know.
According to one of the formulas, my A3 heads would need to see 11,000 rpm for the engine to be able to pump that much air with 357 cubes. Whenever I see Joey he asks about them. All I know is "they work good". They work better then the iron heads. That's what I tell him. Hey. They were $400 bucks. How could I turn them down? No doubt he regrets that sale?
12 seconds 1/4, 197 @ 6,800 in 5th is at my limit if I'm lucky. Depends is making some really nice designer type adult diapers. Reasonably priced to.
Hey Mike Cook went 9.6 at 130 somethingin Gary Hall's GTS Pantera by just changing to 5.36 gears. No fancy Webers, just a 4779 Holley.
I gave up on drag racing because the tire shake hurts my neck. Blurry vision from it is too spooky. I can't see where I'm going. I need a tracer light that I just point at. Detached retinas. Attached rectum. The smell from all of that smoking rubber turns my stomach too? Plus I'm sensitive to the spectators. They give me the finger and one guy "mooned" me? How insulting?
At least if Jungle Jane would flash me just once! That would help.
At some point flow numbers do mean something, probably a lot? I have to remember that not only am I the driver, I'm the pit crew and the sponsor.
At one time the Dodgers wanted to talk to me because I threw 100mph. That's fine. Do you know how fast the ball comes back when the batter hits it? Don't ask. You don't want to know. Your eyes can't focus fast enough to see it but if it gets you, you likely won't remember a thing...IF you survive that is?
Aluminum heads. They're just there to save weight an polish up with Mothers.
So far, I haven't found anything that sounds like Webers or pulls out of high speed turns like them. It is easy to show on a dyno how EFI eight stack pulls better on the average but it doesn't pull harder in key spots.
Plus, it doesn't throw flames through the stacks in the dark at cold start up. That one always draws crowds.