Big Block Chrysler Crankshaft | Dodge Plymouth Mopar 383 400 413 426W 426 Hemi 440 Crankshaft Catalog

Molnar Technologies

We have a large assortment of big block Mopar crankshaft models to choose from. We have stock stroke and several different BBM stroker crank lengths available for these high performance V8 muscle car engines. The cranks listed here are for use in the Chrysler, Dodge, Plymouth Mopar B and RB series big block engines. These include the following original engine displacements as well as stroker engines built from these OEM and aftermarket engine blocks:

  • 361
  • 383
  • 400
  • 413
  • 426 Wedge
  • 426 Hemi
  • 440
  • Stroker engines based on any of the above stock displacement Big Block Chrysler engines

Molnar Technologies superior forged steel crankshafts are extremely strong, precision machined high performance parts and can be used in everything from a high performance street car to an all out competition vehicle. Whether you need a 426 Hemi crankshaft for a muscle car restoration, a 440 stroker crank for a drag race car or most any big block Chrysler engine application, we can provide the rotating assembly components you need for a strong dependable bottom end. 

molnar 383 400 413 426 440 mopar crankshaft

Check out the many premium features included with each Molnar big block Mopar crankshaft and order today to get started on your next engine project. Check out our selection of Molnar Technologies H beam connecting rods and get a set of rods that will be the perfect match for your new crankshaft.

Molnar Big Block Mopar Crankshaft Features

  • 4340 forged premium steel construction
  • Nitrided main and rod journal surfaces for superior wear resistance
  • Multi stage heat treatment
  • Precision machined to extremely tight tolerances
  • Material properties are monitored closely to insure optimum performance
  • Counterweight placement designed for improved crankshaft performance
  • .125" radius on both the connecting rod and main journals for increased strength
  • Precision ground and micro-polished journals
  • Chamfered oil holes for improved oiling
  • Indexed for correct stroke

4340 Forged Steel Big Block Chrysler Dodge Plymouth Crankshaft Specs

  • Stroke Crankshaft stroker length in inches
  • Notes Additional information about specific applications
  • Pin Crank rod pin / rod journal diameter in inches
  • Main Main journal size in inches
  • Min Rod Recommended minimum rod length in inches
  • Bob Approximate bob weight in grams

Big Block Chrysler Crankshaft Specs and Price List

Rod pin / rod journal size note: 2.375 is the stock big block Mopar rod journal size. 2.200 is the common big block Chevy size. When choosing a crankshaft be sure to match the connecting rods you purchase to the rod journal size of the crankshaft you are going to use. The 2.200 size is a bit lighter and allows for easier installation of stroker crankshafts as the reduced journal diameter also allows a smaller big end on the connecting rod.

If you have any questions about which connecting rod set to purchase to match the crankshaft, please do not hesitate to contact us. We will be happy to assist you.

Stroke Notes Pin Main Min
Rod
Bob Part # and Price

361 383 400 Stroker Crank for Mopar B Engine

3.910 3.910" stroke 6 Bolt Flange 2.200

361 383 400

B Engine

2.625

6.450 2300 383-3910NC6F

$1032.78 $892.01
4.150 4.150" stroke 6 Bolt Flange 2.200 6.450 2300 383-4150NC6F

$1032.78 $892.01
4.250 4.250" stroker 6 Bolt Flange 2.200 6.500 2300 383-4250NC6F

$1032.78 $892.01

413 426W 426 Hemi 440 Crankshaft for Mopar RB Engine

3.750 6 Bolt Flange, Stock stroke, stock rod journal 2.375

413 426W 426 Hemi and 440

RB Engine

2.750

6.760 2350

440-3750ME6F

$1032.78 $892.01
3.750 8 Bolt Flange, Stock stroke, BB Chevy rod journal 2.200 426-3750MC6F

$1032.78 $892.01
3.750 8 Bolt Flange, Stock stroke, stock rod journal 2.375 426-3750ME6F

$1032.78 $892.01
4.150 6 Bolt Flange, Stroker, BB Chevy rod journal 2.200 440-4150MC6F

$1032.78 $892.01
4.150 6 Bolt Flange, Stroker, BB Mopar rod journal 2.375 440-4150ME6F

$1032.78 $892.01
4.150 8 Bolt Flange, Stroker, BB Chevy rod journal 2.200

426-4150MC6F

$1032.78 $892.01
4.150 8 Bolt Flange, Stroker, BB Mopar rod journal 2.375 426-4150ME6F

$1032.78 $892.01
4.250 6 Bolt Flange, Stroker, BB Chevy rod journal 2.200

440-4250MC6F

$1032.78 $892.01
4.250 8 Bolt Flange, Stroker, BB Chevy rod journal 2.200 426-4250MC6F

$1032.78 $892.01
4.375 8 Bolt Flange, Stroker, BB Chevy rod journal 2.200

426-4375MC6F

$1032.78 $892.01
4.500 8 Bolt Flange, Stroker, BB Chevy rod journal 2.200 426-4500MC6F

$1032.78 $892.01

If you do not find the big block Chrysler crankshaft you need, please contact us for assistance. New models are constantly in development so we may have cranks available that have not been added to this website yet.