Mopar Chrysler Dodge Gen 3 Hemi Cranks for 5.7 6.1 6.4 Engines

Molnar Technologies

We have a large assortment of Mopar Chrysler Dodge Gen 3 Hemi crankshaft models to choose from. We sell NHRA approved class legal cranks as well as stock stroke and several different length stroker cranks for these high performance Gen III Hemi engines. Cranks listed here are for use in the Mopar, Chrysler, Dodge 5.7L, 6.1L and 6.4L Hemi engines which are also referred to as the Generation 3 Hemi.

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 or truck to all out competition cars, trucks, boats and more. A wide variety of displacement sizes can be built using these cranks as the foundation for a 5.7 Hemi stroker kit, 6.1 Hemi stroker kit or 6.4 Hemi stroker kit.

Molnar crank and rods Gen3 Hemi Challenger

Check out the many premium features included with each Molnar 5.7, 6.1, 6.4 Hemi crankshaft and order today to get started on your next engine project. We also sell a large selection of Molnar Technologies H beam connecting rods for the Gen III Hemi engines that are the perfect match for your new crankshaft. Click here> Gen 3 Hemi Connecting Rods to view the available sets.

Molnar Technologies Gen 3 Hemi 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
  • Excellent choice for any Gen 3 Hemi stroker kit

These crankshafts will fit Chrysler and Dodge, 5.7 liter, 6.1 liter, and 6.4 Liter Gen 3 Hemi engines. The main difference in these 3 engines from the factory is the cylinder bore size and crankshaft stroke.

4340 Forged Steel 5.7, 6.1, 6.4 Hemi Chrysler Dodge Crankshaft Specs

  • Stroke Crankshaft stroke length in inches
  • Notes Additional information about specific applications
  • Pin Crank rod pin / rod journal diameter in inches
  • Main All of these cranks use the stock main journal size of 2.559"
  • Min Rod Recommended minimum rod length in inches
  • Bob Approximate bob weight in grams

5.7 hemi stroker crank

Molnar Chrysler Gen 3 Hemi Crankshaft Specifications and Price List

Stroke Notes Pin Min
Bob Part # and Price
3.593 Chrysler Drag Pack Hemi Crank
with 2.100" rod pins (**NHRA Approved**)
2.100 6.000 1700 345-3593JB6F

$1060.10 $915.61
3.795 3.795" stroke with 2.100" Rod Pins (**NHRA Approved**) 2.100 6.000 1700 345-3795JB6F

$1060.10 $915.61
3.900 3.900" stroke with 2.000" rod pins 2.000 6.125 1700 345-3900JA6F

$1060.10 $915.61
3.900 3.900" stroke with 2.100" rod pins 2.100 6.125 1700 345-3900JB6F

$1060.10 $915.61
4.000 4.000" stroke with 2.100" rod pins 2.100 6.125 1700 345-4000JB6F

$1060.10 $915.61
4.050 4.050" stroke with 2.000" rod pins 2.000 6.125 1700 345-4050JA6F

$1060.10 $915.61
4.050 Extra Heavy Duty billet steel crank with 8 counterweights. 2.100 rod pins for use in brutal high output applications. 2.100 6.125 1700


Contact us for availability and pricing

4.080 4.080 stroke with 2.000" rod pins 2.000 6.125 1700 345-4080JA6F

$1060.10 $915.61
4.250 4.250 stroke with 2.000" rod pins 2.000 6.125 1700 345-4250JA6F

$1060.10 $915.61


Mopar Chrysler Dodge Gen III Hemi 5.7L, 6.1L, and 6.4L Reluctor Ring

Chrysler Dodge Gen 3 Hemi reluctor ring
Description Part #

This reluctor ring is the correct one to use with Molnar Technologies Gen III Hemi stroker cranks in engines requiring a 32 tooth reluctor. It uses a 4 bolt attachment which is the same as the OEM Chrysler 6.1 crankshaft. The 2003 – 2008 5.7 and 6.1 used the 32 tooth wheel.

This reluctor ring can also be used as a replacement for the original stock reluctor gear on 2008 and earlier Chrysler and Dodge 6.1 Hemi engines with stock crankshafts.


$120.99 $104.50
If you have a 2009 – 2012 Gen3 Hemi with a 58 tooth reluctor, this is the correct ring for you. (NOTE: Some people count the teeth on the 2009 and later as 60, but difference is only in how people count the large teeth, so even though some people say 58 and some 60, they are both the same reluctor) MRR-60

$120.99 $104.50

2013 and Newer:

Chrysler / Dodge changed the OEM reluctor and engine management system in 2013. If you are working with a 2013 or newer vehicle then this is the proper 58 tooth reluctor to use.


$120.99 $104.50


Crankshaft Timing Gear Spacer for VVT Engines

If you will be installing your new Molnar crankshaft in a VVT engine you will need a spacer to maintain the proper alignment of the timing chain gears. This spacer is only required for Gen 3 Hemi engines equipped with the variable valve timing system. In order to make room for the VVT system, Chrysler had to space the cam gear out from the block to make room for the VVT mechanism. These spacers are not normally included in any of the off the shelf 5.7 Hemi stroker kits but they are available for purchase separately as required.

5.7, 6.1, 6.4 Hemi Crank Spacer for VVT Engine
Description Part #

Hemi Gen 3 VVT engine crank spacer


$44.05 $38.05


Gen III Hemi Crankshaft Flange Sleeve

This part is a direct replacement for the OEM sleeve installed in the rear flange of stock crankshafts. You do not have to get this to install your new Molnar crank as long as you can re-use your stock sleeve. If your stock sleeve is damaged, or you just want to go with a new one then this part will replace an OEM Chrysler Gen III alignment sleeve.

Gen III Hemi Crankshaft Flange Sleeve
Description Part #

Hemi Gen 3 crankshaft flange sleeve


$44.05 $38.05



5.7 6.1 6.4 Hemi Crankshaft Balancing

gen 3 hemi crankshaft balancing

We offer balancing of any of the Molnar Hemi Gen 3cranks listed on this page as an optional service, for an additional charge. Balancing is only available if you are also purchasing the matching Molnar connecting rods. If you are interested in having a crank balanced before shipping please contact us and we will be happy to help. We will need to know the weights of one piston, wrist pin, pin locks, piston rings and rod bearing that you plan on using in order to provide this service for you.


Looking for a different spec crank?

If you do not see the Gen III Hemi 6.4, 6.1 or 5.7 Hemi stroker crank you need on this page please contact us for assistance. New models are constantly being added to the Molnar Technologies product line so we may have cranks available that have not been added to our website database yet.