GM Chevy Vortec 4200 4.2L Inline 6 Connecting Rods

Molnar Chevy 6 Cylinder Rods

Molnar Technologies H Beam rods are extremely strong performance parts which 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 increases fatigue life. All Molnar connecting rods are fitted with highly durable premium bronze bushings for use with floating wrist pin type pistons. Each rod set for the GM Vortec 4200 inline 6 engine includes ARP2000 series fasteners which are a Molnar Technologies proprietary design, assembly lubricant and installation guidelines.

All Molnar 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.

Molnar Technologies Inline 6 Cylinder GM Atlas 4.2 Engine Rods

Vortec 4200 H Beam rods

GM 4.2L Inline 6 connecting rod

Molnar Technologies GM Chevy Vortec 4200 DOHC Inline 6 Cylinder Rod Specs and Prices

  • Length 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 7/16" 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

Vortec 4200 Rods

Part Number Length Wt Desc Jrnl Pin BE PE


$747.49 $645.61
5.984 675

4.2L Inline 6

Vortec 4200 DOHC




0.944 0.980


Sold out and discontinued

5.984 675

4.2L Inline 6

Vortec 4200 DOHC



0.944 0.980


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