Driving Line VOLUME V ISSUE 2 | SPRING 2019 | Page 19

INSIDE THE
1,000 LB-FT
6.7L CUMMINS
Story and Photos by Mike McGlothlin
WITH THE RELEASE OF THE ALL-NEW, HIGH-OUTPUT 6.7L CUMMINS,
RAM HAS OFFICIALLY WON THE RACE TO 1,000 LB-FT AMONG THE BIG THREE
So now that the cat’s officially out of the bag and we From the compacted graphite iron block to the forged-
know the new high-output 6.7L Cummins produces 1,000 lb-ft steel connecting rods to a revised cylinder head with larger
of torque—the most ever offered from an OE engine slated for head bolts—and all the supporting components that go along
a pickup truck—it’s time to find out what measures Cummins with it—it’s clear Cummins engineered plenty of durability into
has taken to ensure this powerplant remains as durable as its this engine. In fact, there’s room to grow in the future. As a
predecessors. Is the iconic I6 still capable of going a million miles bonus, a bigger variable-geometry Holset turbocharger (with a
with four-digit torque on tap? While the million-mile question will forged-milled compressor wheel) produces more than 30 psi
have to be answered at a later date (we’re told they won’t be of boost, hydraulic lifters rule out the need for periodic valve
available until May anyway), we can tell you that virtually every adjustments and a higher-pressure Bosch common-rail injection
area that’s vital to this engine’s long-term survival has been system yields the cleanest emissions to date. For an inside look
beefed up or improved upon with better parts. at all the parts and pieces that make the 2019 6.7L Cummins
the king of torque, keep reading.
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