Slant Six Connecting Rods

Molnar Slant 6 Connecting Rods

Molnar Technologies H Beam Slant 6 rods are machined from billet 4340 steel, and then heat treated to provide improved strength. To make the rods even stronger, they are shot peened which also increases fatigue life. All Molnar Slant Six connecting rods are fitted with highly durable premium bronze bushings for use with floating pin type pistons. Each con rod set for the slant six engine includes ARP fasteners, lubricant and installation guidelines.

All Molnar 198 and 225 Slant Six rods are finished in the United States at the Molnar Technologies shop in Michigan. Critical rod dimensions are are held to very precise tolerances of +/- .0001 of an inch, which is the tightest tolerance you will find in the performance and racing aftermarket.

We offer rod sets for Slant Six performance engines using either a forged or cast crankshaft. The width of the rod journals are different for the two types of cranks which is why there are two different rod sets available. Be sure you order the correct part number to match the type of crankshaft you have. If you are not sure which style crank you have, please do not hesitate to contact us for assistance.

These rods will work in any of the Chrysler, Plymouth or Dodge 198 and 225 Slant Six engines as long as you select the proper matching pistons. The 7.005 inch length of these rods is the same as the stock length on the 198 cubic inch engines. This length is also the preferred length for high performance and racing 225 engines. The most popular forged pistons for the 225 are made to work with this rod length. Campbell Enterprises sells Slant 6 forged pistons that are made to work with these rods.

H Beam Slant Six Rods

Chrysler Dodge Plymouth 198 225 Slant Six rods

Mopar Slant Six Connecting Rod

Chrysler Dodge Plymouth Mopar Slant 6 Rods Specs and Prices

  • Length Rod length of the connecting rod, as measured center to center, in inches.
  • Wt Weight in grams, of one complete connecting rod assembly
  • Desc Additional information about specific applications
  • Jrnl Crank rod journal diameter
  • Pin Size Piston pin diameter, in inches or millimeters
  • BE Width of the crankshaft end of one rod
  • PE Width of the piston end of one rod
  • Bolts Rods come with 3/8" diameter ARP2000 fasteners installed.
  • Part Number Molnar Technologies Connect Rod set part number
  • Price The price shown is for a complete set of rods for the engine
Part Number Length Wt Desc Jrnl Pin BE PE


$715.60 $618.06
7.005 650 Use with forged slant six crankshaft 2.187 .901 1.210 .980


Sold out, no longer available

7.005 603 Slant 6 rods for use with cast slant 6 crankshaft 2.187 .901 .940 .980


If you do not find the Slant 6 connecting rods you need, please contact us for assistance. New models are constantly in development so we may have rods available that have not been added to our site yet. We also sell other Slant Six performance parts including forged piston kits, SFI rated harmonic balancers and more.


  1. Ray Simpson says:

    Hi, I am going to be rebuilding my slant six and want to use these molnar rods. I have a 69 VF Valiant. The engine is blue in color. I’m unsure if i have a cast or forged crank, any help would be great!

  2. Hello Ray,

    Thank you for visiting our site and taking the time to check with us about connecting rods for your Slant Six engine project.

    If your 1969 engine still has the original crankshaft you will have a forged crankshaft. The forged Slant 6 crank is the more desirable one to use as they are stronger than the later cast cranks.

  3. Just curious to see if it would be feasible for this rod to be produced with a 2.015 inch big end for 1.89 inch journal quad four clevite bearings to allow for off-set ground stroking of slant 6 crank for more cubic inches. I have read about some welded and reground cranks but think this may be a more durable and cost effective option, depending on how much stroke could be gained. Thank you for your time and I look forward to hearing back from you!

  4. Hello Garrett,

    Thank you for visiting our site and taking the time to discuss your idea with us.

    A set of rods can be made to the specs you requested, but they would have to be done as a custom order and as such would be considerably more expensive than the sets made to fit the stock crank rod journal size. Lead time for a set of customs would be approximately 12 weeks.

    One thing to keep in mind is that while you could get a bit more stroke this way, the real life performance gains may not be worth the expense as the Slant Six already has a very long stroke, relative to the bore, right from Chrysler.

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