Not sure if this is the right section or not but I'm in central IL and am in search of a 2 speed powerflite push ****on trans and also does anybody know of or have a 4x2 or 6x2 intake for a 241 dodge. I've seen the you weld em log intakes just wonder if something is out there that's cast or a little nicer looking. Thanks!
The U-fab kits are probably all you're going to find for that engine. Offenhauser made both a 2X2 and 3X2 intake for it, but I've never seen a factory four or six carb intake for one.
There was a guy on here awhile ago had a wiend dragstar 6x2 aluminum log style forsale. He no longer has it but hopefully this post might smoke out the guy who bought it and see if he'll sell it or if another member has one
I am not sure that you are going to find that. The intake would only fit a 241 or a 270. Neither is in need of that many carburetors. Even three Strombergs on a 270 is past what is needed. I have one customer running three Strombergs on a 270 that needs all three, but that is because there is a 4-71 between them and the engine.
I have another customer, that wants a 4-71, that has three Stromberg 97's on a 270. That engine would probably be better with three Stromberg 81's. Since I have a 4-71 in the works for him, we are holding off doing anything else, and the 97's will go on top of that.
Well, that should give you plenty to do so far as making it driveable. Honestly, even a 400 cfm four barrel is overkill for a 241 cubic inch V8 that's probably going to be pretty much stock otherwise.
Planning on raising compression to around 9-9.5:1 and a aftermarket cam if I can find them with a little port work amd lake style headers
That is not how carburetors work. Jetting them down just makes the mixture lean. Throttle bore and venturi area make carburetor size. Having too much venturi area, either by having a single carburetor that is too large, or too many carburetors, reduces the flow rate through the venturis. That leads to fuel that is more poorly metered out, and more poorly atomized. 81's, measured at 1.5 in/Hg are somewhere between 110 and 125 CFM, max flow, each. Your 241, optimistically, flat-out, at a valve floating 5500 RPM, needs 300 CFM. That's wide-open. Four 81's would be a max of 440-500 CFM. Keep in mind that modern 2-barrel carburetors are not customarily measured on the same scale as 4-barrel carburetors. Modern two barrel carburetors are measured on the 1.5 in/Hg scale. Modern four barrel carburetors are measured on the 3.0 in/Hg. scale. About the only way that this would work would be to block off two of the four to both air and fuel, or to run a progressive linkage, with two of the carburetors tipping in at 90% opening of the other two, and both throttle stopped at 10% opening. That way, the second two, combined, provide only 20% more flow. That would be 300 CFM.
Increasing compression does not increase air/fuel need. It just does more with what made it in there. The only thing that increases fuel need is either displacement increase, or camshaft lift and duration (and maybe heavy porting). The latter speaks to increasing the efficiency of the engine. That said, bone stock, the 241 has a volumetric efficiency of about 80%. At that number, you need ~300 CFM in carburetor at 5500 RPM. Even if you miraculously increased that volumetric efficiency percentage to 100% (magic, or forced induction), you would still only need ~380 CFM at 5500.
I'm fine with running two dummy carbs. I'm not trying to race or break records. Just goin for a certain look with a odd ball motor.
https://www.jalopyjournal.com/forum/threads/weiand-drag-star.1268497/ here you go https://www.jalopyjournal.com/forum/threads/weiand-red-ram-4x2-intake.1276716/
At one time Hot Heads offered several aluminum intakes for the Dodge . I think they had a 3x2 model and a 4 barrel model,,,for the low decks,,,maybe more ? They were Offenhauser,,,,,,made from the old tooling ,,,,,,check them out and see . The Walker family always tried to have good parts for these old Hemi’s . Tommy
It might be hard to find 1-barrels from the automotive world that would be small enough to do the job. Typically a 200-250 cubic inch engine would be serviced by a single 1-barrel carburetor. All of Ford's offerings from 144-250 had a single 1-barrel. Even two from the 144 might be close to too big, all of the others would be worse. It might be possible to dip into the motorcycle parts bins to work something out, but you would be on our own for a manifold. If I were to do this, I would run eight carburetors, each on separate runners. Your engine is 241 cubic inches, which is 3949.28 cubic centimeters. Let's call that 4000, for rounding sake. That means that it is 500cc per cylinder. Plenty of 500cc bikes are out there (and 1000cc twins). You could get some flanges and some tubing, and roll-your-own cross-ram manifold.
They have a 3 x 2. The trick on a 241 would be 3 97's, on a progressive linkage, stopping the outer two at 50%. *It has been marked "Not Available".
That is about the current state of things for the 241-259-270. Offy did offer manifolds but it has been awhile. Also, we had Exeter Auto Parts on this board, an Offy dealer, but haven't seen the name lately. As to the 2-spd 'Flite, check all of the 'usual' cl***ifieds you can find. The trans can be from any of the 50's cars including L6 engines (you'll need the v-8 bell however...)
Another option I may available is 331 extended bellhousing does anybody know if I can pair a 2 speed powerflite to it with out it being a mile long. Building a late 50s show inspired hot rod out a 39 ford truck and can't spare to much leg room as I'm in the 6'5" neighborhood
The best bet is a 1954 or later Hemi including any of the Poly versions. Keep in mind that the Hemi and the Poly (of the same engine) are very similar in HP and TQ. The various poly valve covers usually make folks scratch their heads...WTF is that?
I have a weiand 4x2 that someday I hope to make streetable for my 241, but so far I’ve heard that will be a challenge. I also have the offy 3x2 that will probably be the manifold I use the majority of the time, but I would like to make the 4x2 work enough to do a few shows with it.
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