GM Authority Recognizes Diesel Authority

Internet site GM Authority recently wrote about Gale Banks’ video series “Killing a Duramax,” where the test Duramax L5P made 912 horsepower and 1,389 pound-feet of torque running completely with stock internals. As the article points out, those power numbers that Banks attained are a 467 hp jump over the stock numbers and 479 lb-ft of extra torque.

“Banks is impressed, and justifiably so. Compared to the previous iteration of the L5P Duramax engine build, this new version is producing an extra 60 horsepower thanks to a number of modifications to the exterior piping” explained Jonathan Lopez.

0:00 – Intro
3:08 – 912 horsepower
6:58 – Exhaust system backpressure
12:10 – Turbocharger Boost to Backpressure Ratio
17:22 – Engine Scavenge Ratio

In the video highlighted by GM Authority Gale Banks reveals the data behind keeping this Duramax L5P running. New lessons include turbocharger up-pipe design, turbocharger matching, Cold-air intake design, Engine Scavenge Ratio and Boost to Backpressure Ratio.

Both the YouTube video and GM Authority’s article are great jumping-on points for the next chapter in the pursuit of power and the breaking point. The Banks team sees the swap of the stock cam for a prototype performance cam from Comp Cams.

Get caught up on what’s going on before the next power plateau is reached. Or watch to see if it blows and oil starts painting the dyno’s walls. Read the full article from GM Authority.