6.7L Turbocharged Cummins Engine – Engine Builder Magazine

Diesel of the Week is presented by

Jessie Harris’ 1975 Chevy C10 has been handed down for generations. His grandfather procured it new in ’75, ahead of offering it to Jessie’s father in ’78, and then Jessie got his fingers on it in the ’90s the moment he got his license.

Practically 50 several years afterwards and that exact same C10 has long gone by way of really a couple of variations. In truth, the two-wheel-travel Chevy just lately acquired Swiftest Diesel honors at Ill 7 days 2023. The equipment was one particular of only a several diesels at the celebration and proved to be a stunner on the drag strip. It is been known to go away the line with 50-psi of enhance on faucet and pull the entrance wheels off the ground in route to 1.1-second 60-foot moments.

Just before Unwell 7 days, Harris’ truck could be noticed at Rocky Mountain Race Week and Very hot Rod Drag 7 days on many situations. He’s been racing the Cummins-run truck considering that 2015, but just before that, the truck was functioning gasoline, e85 or alcohol. Its diesel existence commenced with a 5.9L P-pumped 24v Cummins that Harris experienced taken off from his tow truck and dropped into the Chevy. Now, it offers a turbocharged 6.7L Cummins that turns heads anywhere it goes.

The engine is constructed close to a stock block and has a stock crankshaft, Carillo rods, and Arias pistons. The head was accomplished by Wagler Competitiveness Merchandise and has a Financial institutions consumption on it, and the camshaft is a Hamilton 188/220. It also has inventory rocker arms.

“For the turbo setup we went with a single turbocharger, an S484/96 with a DPS Turbonator VGT housing,” Harris suggests. “The fuel procedure is S&S Diesel Motorsports, it’s their 400{49e09b23eae7466ccc7574c19ebb3019301c9a11d2999feff81a3526451546a5} more than injectors and 14mm race pump. The rest of the gasoline system is Aeromotive.

“I bought the intercooler from True Road Effectiveness in Florida. I desired a significant core, and most people today didn’t want to speak about it, but they could do it. The front address is a Wagler device and it’s capable of driving 4 pumps, while I’m driving one gasoline pump and 1 dry-sump oil pump. Not lots of people today do dry sump on diesels, but my oil pan clearance pressured me to, and I don’t regret it.”

As Harris carries on to improve and alter his engine set up, the tune from his EFI Live also will get modified. For a prolonged time, he was generating just around 900 horsepower, but Harris believes that range was turned up to close to 1,200-hp through Sick Week.

The target for Sick Week was to get underneath 8.70 – sadly that did not come about, but Harris characteristics that to turning up the motor too quickly. The engine tune is ideal where by is requirements to be, but Harris has far more work to do on the chassis to pull every little thing collectively. The top intention will be do get the truck over the 1,500-horsepower barrier.

Diesel of the Week is sponsored by AMSOIL. If you have an motor you’d like to emphasize in this sequence, please email Engine Builder Editor Greg Jones at [email protected]