Thread: HELP - 4x2 OR crossram induction WITH a 350 automatic tranny?? (need advice)

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Hey, guys -

Sorry to be such a pain BUT I don't want to jump the gun and buy an induction system (or two) that won't work with the 350 automatic that my Deuce has. Will most 4x2/6x2/crossram setups work OK with a 350 automatic?? THANKS for the info/advice!!!

they will but IMO would work better with a 4,5,6 speed manual

How much converter stall? and what rear end gears?

I'm with gasser on this one if you had a manual it would work good but IMO it would be kinda a waste of $$$ but dont let me discourage you or lead you away from it. You do what you want cause its jsut my opinion

“……Is the Man-A-Fre 4x2 intake manifold with 4 Rochester 2G carbs a good setup for the street or is it more of a race induction??....”

The short answer is that it is a race manifold.

The thing is with a lot of the manifolds like the crossrams, tunnel rams, or the 4 deuce, 6 or even 8 deuce intake is that they were primarily designed for high RPM race applications. Things like idle quality, low and mid range throttle response were just not major concerns when they were designed.

That being said most can be made useable for the street but besides optimizing the carburetors and linkage it often involves building or changing the rest of the car around to minimize the weak points of the intake.

With either of the 2 manifolds you are looking at, the starting point would be to actually bolt the thing on and see where you are at and going from there.

The Man-A-Fre intake is basically over kill (over carbureted) for all but a very high winding deep geared, light weight car. It will likely require a “loose” (high stall) converter that would allow the engine to come up to a higher more useable RPM range before it tries to start pulling the car.

I have seen these used on the street with some success mostly because the owner had the patience to fine tune it and the car to minimize it’s shortcomings as a street intake. I have also seen these intakes for sale because the owner could just not get them dialed in to their satisfaction.

You've made a couple of posts here on the same subject and I'm kind of trying to answer both on one post. Anyway I have never seen a 6 X 2 intake for a small block Chevy.....however if you do come across one I think it would be the one you would have the most success with making streetable.

Ok you’re probably asking why a 6 carb intake would work better than a 4 carb one if the 4 carb one is too much carburation. It all pretty much boils down to the basic design of the intake. On the 4 carb intake by its design it requires that all 4 carburetors work at the same time (have synchronized linkage) On the 6 X 2 intake the carbs can be set up to open progressively and the timing and amount of opening end 4 carbs can controlled by the linkage. Basically you would only be running on 2 carbs the majority of the time and the end carbs would not open until the engine is an RPM range where it can actually use the extra carburetion.

So far it’s only running on the test stand, but all indications are that it will work very well once it gets in the project it’s intended for.

The picture if from when I was setting up the linkage.

Here are a couple of videos of the engine…..the first kind of explains the linkage and the second shows it running.

http://www.youtube.com/watch?v=zkFIowdvfGo

http://www.youtube.com/watch?v=x5VEb...eature=related

MANY THANKS!! You guys are AWESOME!!!

I didn't "win" the bid on the Man-A-Fre (basically because it was "gold plated" - i.e. the reserve was way more than I wanted to pay) and after reading these superb posts, I think I'll steer away from one anyway. I tried to contact Charlie Price yesterday about one of his 6x2 Offenhauser/Stromberg 94/97 setups but his shop wasn't open on Fridays( He does say on his website that he normally sets this kind of setup to work on either the center two carbs or the outer four carbs for acceptable streetability. I think the 6x2 set up like Mike P recommended will be the "holy grail" for my Deuce. Seems very logical and kinda like the 6-pack setups that I had on some of my 440's where the engine ran off the center Holley carb and the outer two others were vacumm secondaries.

Again - THANKS for helping me NOT make a mistake!!!