DFC Diesel SS671318RETRO2124CP3SOALB Street Series Speed of Air Long Block (STD/Auto) | 2013-2018 Dodge RAM 2500/3500 6.7L Cummins (G56/68RFE)

Features:

• Speed of Air Hyperformance pistons included
• CNC-machined turbulator dimples on piston tops
• Thermal barrier and anti-friction piston coatings
• Total Seal gapless piston rings included
• ARP Series 2000 head studs included
• Block bored for the next oversized piston
• Machined with Rottler equipment, tighter than OEM
• Near identical weight piston and rod assemblies
• Reinforced internals with all new bearings and valves
• Long block with cylinder heads installed
• For G56 manual and 68RFE automatic

Get Your Cummins Back To Work With Speed Of Air Pistons And ARP Studs

When the engine in your RAM 2500 or 3500 gives up, the easy move is to put back exactly what came out, and that is not the move DFC had in mind with its Street Series. DFC calls the Street Series its flagship line, built for work trucks, daily drivers, and diesel enthusiasts, with upgrades aimed at the common problem areas. This Speed of Air version adds Hyperformance pistons that DFC developed with Speed of Air, and the piston tops carry precise, CNC machined dimples called turbulators. According to DFC and Speed of Air, those dimples help the flame front burn closer to the cool walls of the combustion chamber, which improves combustion efficiency. They say that can mean lower fuel consumption, more torque and horsepower, and better pulling power, though results will vary by truck and how it is driven. The pistons also carry a thermal barrier coating on the crowns and an anti friction coating on the skirts. The block itself is bored and machined on Rottler equipment to tighter than OEM specifications, and it goes together with ARP Series 2000 head studs and Total Seal gapless rings. DFC also matches the weight of the piston and connecting rod assemblies, which it says gives you a smoother, quieter, and more balanced engine. For a 6.7L Cummins that has real work waiting on it, this is a replacement worth building around.

Weight Matched Rod And Piston Assemblies With Patented Turbulator Pistons

The DFC Diesel SS671318RETRO2124CP3SOALB is a remanufactured Street Series Speed of Air long block for Dodge RAM 2500 and 3500 trucks with the 6.7L Cummins, listed for use with the G56 manual transmission and the 68RFE automatic transmission. The block is professionally machined and bored for the next oversized piston, using Rottler equipment that DFC says holds tolerances tighter than OEM specifications. The Speed of Air Hyperformance pistons use patented turbulator indentations that are CNC machined into the piston top to exacting tolerances under ISO 9001 quality standards. Speed of Air says these create a thinner, well attached boundary layer between the air fuel mixture, its flame front, and the combustion chamber walls, which raises combustion efficiency. The pistons are coated as well, with a thermal barrier on the crowns and an anti friction coating on the skirts, and they are paired with Total Seal gapless piston rings. DFC's Street Series long blocks come with ARP Series 2000 head studs, and the piston and connecting rod assemblies are machined to a near identical weight to help the engine run smoother, quieter, and more balanced. As a long block, it is a short block with cylinder heads installed, ready for the final buildup, so bolt on parts must be swapped over from your existing engine. DFC chooses the specific brand of each component, and those parts cannot be specially requested.

Fitment: 2013, 2014, 2015, 2016, 2017, 2018 Dodge RAM 2500/3500 6.7L Cummins G56 manual and 68RFE automatic transmissions

Notes:

• Listed for use with the G56 manual transmission and the 68RFE automatic transmission, confirm your transmission before ordering
• Built with Speed of Air Hyperformance pistons
• Fuel mileage, power, and torque gains are manufacturer claims, results will vary
• Long block consists of a short block with cylinder heads, ready for the final buildup
• Parts must be swapped over from your existing engine and installed on the new long block
  
• Component brands are chosen by DFC and cannot be specially requested
• $500 shipping charge/$2,800 core charge
• California shipping restriction for this SKU