400 std. just watch out for those five words that will just kill you. …


361 383 400 413 426 Wedge 440 Big Block Mopar Rotating Assembly Parts.



My 440 went 11.901@111.6mph, today my 400 went 11.906@112.65mph. 383/400 vs.413/440 - B vs. RB In the interest of accuracy and brevity, the 383 and 400 will be referred to as B engines while 413 and 440 engines will be referred to as RB engines 426 engines are also RB but a 426 should be very easy to distinguish due to the huge heads with the spark plug wire going through the middle of the valve cover. Thats one good running 383. I just ran my stock stroke 400 today. The converter was raised 500 rpm for the 400, I can honestly say the stock stroke 383/400's can make some power.

B Engines = 350*/361/383/400 RB Engines = 383*/413/426W/426H/440 * As rare as a free Steak Dinner.



We will be focusing on where the driver's side head meets the block, AKA the "deck".

Rematch with a stock bore Mopar 400 has 10-1 comp, 440 had 9.4-1, 440 has 160 psi cranking, 400 has 140. The Mopar 400 Big Block engine for Chrysler, Dodge and Plymouth makes is a member of the B-series of V-8 engines. This was my first day running this engine and I forgot my jets so I parked it after a few runs, my 440 had a whole season, I will go faster still. bore = 440 + .020"; 400 +.010" = 440 + .030", etc.

"Well while we're at it" :smile-new: The 3.91" stroke low deck engines are 470 cid and make a nice combination.


The components chosen for use here can make or break a project. 426 bore & stroke includes "street wedge", Max Wedge (Ramcharger) & 426" hemi.

This is a 516 headed engine with nothing special, don't need much to go 11.90. One of my last street engines had the same amount of power with over 100 more cubes, and Edelbrock heads with 10.5:1 compression, and a good size solid camshaft. A 440 is easier to find than a 383 also because they were made for over a decade after the 383 was discontinued. My thinking in that the rods are bronze is that the manufacture used all the rods that had been ground to far and dipped them in bronze to fill the gaps then recut them and put them in the block i have now.



These engine components affect ultimate power, reliability and longevity. My thinking in that the rods are bronze is that the manufacture used all the rods that had been ground to far and dipped them in bronze to fill the gaps then recut them and put them in the block i have now.

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The only thing better than cubic inches is cubic money. Welcome to For RoadRunners Only - Dedicated to the Plymouth Roadrunner Enthusiast Ok right now I have a running 383, by the numbers its a 68 block, not original to the car with original heads, a torker intake and a holley 750.

You need pistons and machine work on both most likely, not cheap so go with a low deck 383 for correctness or the raised block 440 for more beef. The engine block bottom end and rotating assembly makes up the base for any high performance or racing engine. Because I have a few cars and more than one example of each engine, I've noticed a far easier way of determining if a big block is in fact a B or a RB. Was impressed that the modified chevy lost to the stock Mopar.Well duh the Mopar had a bigger bore.

ArmyInspector Well-Known Member. All things equal a good 383 will beat a good 440 about 3/4 ths the way through the 1/4. Another benefit is fitment in engine compartments, but your charger shouldn't have issues with that.

We have stock stroke and several different BBM stroker crank lengths available for these high performance V8 muscle car engines. Messages: 163 Likes Received: Joined: Jul 18, 2012.

The only thing better than cubic inches is cubic money. The 400-cubic inch engine was introduced in 1972 in a high-performance and a standard version. I bought a 69 roadrunner with a 440 (1973 Interceptor motor), but also came with a "supposed" numbers matching 383 (which it is from …



The RB also has some kind of bead or web on the corner.


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