SS671318RETRO1920CP4SOALB Street Series Speed of Air Long Block (STD/Auto)

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
• Machined with Rottler equipment, tighter than OEM
• Block bored for the next oversized piston
• 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

A Street Series Rebuild With Speed Of Air Pistons For The Truck You Count On Daily

If your RAM 2500 or 3500 is the truck you depend on every day, a replacement engine should be more than a copy of what just failed. DFC describes its Street Series as built for the work truck owner, the daily driver, and the diesel enthusiast who wants a high quality rebuild, and as a significant upgrade over stock because it addresses many of the common problem areas. This Speed of Air version goes a step further with Speed of Air Hyperformance pistons, which have precise, CNC machined dimples on top 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 better fuel mileage, 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. Around them you get ARP Series 2000 head studs, Total Seal gapless rings, and a block that has been bored and machined on Rottler equipment to tighter than OEM specifications. DFC also machines the piston and connecting rod assemblies to a near identical weight, which it says gives you a smoother, quieter, and more balanced engine. For a 6.7L Cummins that has to keep working, this is a rebuild with real thought put into it.

ARP Head Studs And Hyperformance Pistons In A Bored And Rottler Machined Block

The DFC Diesel SS671318RETRO1920CP4SOALB 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 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 also coated, 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 use reinforced internals, with new pistons, rings, valves, springs, bearings, and rods. 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