Chrysler 400 B-Series Engine Setup Question - Mopar Forums

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Old 06-26-2009, 11:15 AM   #1
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Question Chrysler 400 B-Series Engine Setup Question

I am about to take ownership of a 1974 Dart Swinger that is running a Chrysler 400 “B” engine, a Edelbrock Streetmaster 383 intake, Holly 4 bbl carb, a 727 Torqueflite transmission, headers and dual exhaust all feeding into a 2001 Dodge Durango limited slip rear end (4.11). I have not yet driven the car so I am going on what the current owner says versus what my friends have told me!


The current owner claims the car runs like a bat out of hell and idles well.

I have been told that the Streetmaster is a less desirable vintage intake and the 4.11 rear end on this intake-engine combo will be a low end performance dog and gas hog.

First I would like some experienced advice/opinions if all this I have heard is true and if so what should be my first steps in putting some pep in this car’s step?

Last edited by supercharged; 06-26-2009 at 03:02 PM.
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Old 06-26-2009, 08:35 PM   #2
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well, and 4.11 gears could cause the car to rev out quickly
but, it must be quick
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Old 06-26-2009, 11:06 PM   #3
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Cruising at 70 MPH is going to be stressful in the long run. If this is going to be a street car, driven regularly, then consider changing to something like 3.55:1, or something in that range. If you are considering changing the intake, you might want to find out what the compression ratio is, what kind of cam you have...stuff like that. I have a couple DP4B intakes that I got in a deal for one of my 400 motors. I understand it is the early predecessor to the Performer. But, if it is a moderate build on the motor, the Performer, I think, would be a good choice.

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Old 06-27-2009, 12:35 AM   #4
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Yeah, it will be a gas hog with those gears, but it definitely won't be a low end performance dog. Those are drag strip gears. Intakes manifolds have come a looooong way since the days of the streetmaster. I agree with chlngr1970 on getting at least a performer. Stay with a "two plane" manifold for the street.
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