Banks Power Tunes L5P V8 Duramax Engine To 912 Horsepower: Video
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As we’ve covered before, diesel guru Gale Banks and his team at Banks Power are testing the limits of the 6.6L V8 L5P Duramax engine by “scientifically killing it” on the dyno through a variety of modifications and special tuning that add more power and more torque. Chronicled in a series of in-depth YouTube videos, the latest update in the quest to build the ultimate L5P shows impressive progress, topping out with a maximum 912 horsepower and 1,389 pound-feet of torque!
For reference, the turbodiesel 6.6L V8 L5P Duramax engine is rated at 445 horsepower at 2,800 rpm and 910 pound-feet of torque at 1,600 rpm straight from the factory. That means this Banks special is doling out an extra 467 ponies and 479 pound-feet of twist compared to the stock unit. And that’s on stock internals, by the way. Not too shabby at all.
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.
As outlined at the outset of the video, the latest upgrades include freshly fabricated 2.25-inch up-pipes that move the turbo out of the Duramax engine V8 valley. The new up-pipes feed a new forged 3-inch collector. The stock turbo mounting foot was consequently tossed, which is a necessary move when producing more than double the stock horsepower.
The L5P V8 Duramax engine intake was also revised to provide a straight path right into the turbo compressor. Meanwhile, the exhaust gasses coming out of the turbo are fed into a conical diffuser that’s mated to a 5-inch exhaust pipe. Finally, Banks installed a new viscous fluid vibration damper to help protect the crank.
Check it out in detail by hitting play on the video below, and stick around after the dyno run for a fascinating look at the plethora of data that Banks has on hand.
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Wow! I expect that GM would tune the 2022 HDs diesel to produce at least 500 bhp with 1100 lb-ft then. Hence, this output should be the least that GM should look improve to the Duramax numbers by.
That guy has been modifying diesels for more power for as long as I can remember, and probably knows more about how to do it than anyone else on the planet.
Just because you can increase the performance doesn’t mean you should. The durability of various components is probably at risk at those inflated performance numbers.
huh?
Banks is a life-long hot-rodder/engineer; he’s doing what hot-rodders have always done—find ways to increase performance while also increasing an engine’s lifespan.
No doubt that Hennesey is a talented automotive modifier with a great deal of experience. Based upon on line articles, the question is, what kind of business model is he running? How can he be trusted when he rips people off according to the Internet investigative reporting that included his employees admitting that people out of the country were takien advantage of . In fact, the article claimed that the further the distance you were from Hennesey, the worse you got treated. The article talkd about his parts department robbing Peter to Pay Paul, so to speak. Money meant for a particular project being used on another project. The books were apparently and allegedly not kept straight according to these exposes on Hennesey. No one said he didn’t know how to modify engines. But how can he be trusted with those skeltons rattling around in his closet? Anyone know any more of the truth about Hennesey?
comment has nothing to do with this video or this company. it’s about some guy named hennesey. if you dislike him that much and wish to slander his name why don’t u do it on his website.
Slander is stating lies. I’m quoting material posted on the internet by others. I attributed the information, indicating the terrible things they said that he’d done. Truth is a defense against slander. My position is that others reported documented deals done by him, since it was his company. If you think it is slander then I suggest you contact your lawyer and obtain a definition of it. At this point you don’t know what you are talking about.
Oh, and one more point. The C8 Corvette is part of GM and that he is setting up offers makes the past quite relevant.