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Any chance that GM might be investigating a v10 option again?
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Jon Hagen
Posted 5/28/2023 02:32 (#10246389 - in reply to #10246148)
Subject: RE: Any chance that GM might be investigating a v10 option again?

Hagen Brothers farms,Goodrich ND
Ron..NE ILL..10/48 - 5/27/2023 20:20


I don't think we need 700-1000 hp out of them. I fully  understand it takes so much fuel to make so much hp & there is no free lunch.

A boost of 20% of the GM 6.6 gas would get it to 480 hp, same as D-max. Torque is less, I understand. Not sure would torque would be for 6.6  turbo'd. I assume fuel burn per hp would be approximately the same with/without turbo. Turbo wouldn't boost until it was called for by computer stuff on engine. Anyone can either run in the "econo" mode, or the "I don't care..." mode. If you can cool a turbo diesel, you can cool a gasser. 

I also realize it's different on a smaller scale, but the Ford gassers do just fine with turbo (multi) boost. Our little family car Equinox does just fine also w/turbo. Great mpg & I don't ever see the temp gauge even get to the "straight up" position. Ford's 1/2 T is 3.5L (214 cid if you were born before 2000) & does fine w/turbos, 430 hp & 570 ft lb.

As I've stated in the past, I relate to aircraft turbo'd engines. All are air-cooled that I deal with. Some were "normalized" turbos, some were boosted well beyond atmospheric pressure, even at MSL. They didn't suck gas any differently per hp vs their family's namesake in a NA configuration. Yes, heat was made, but the design changes made it easily managable. They've been around a long-long time.

Yes, a radiator that can cool 500 hp diesel will nearly as easily cool a 500 hp gas, and it's easy to get 20% more HP with a turbo, but still would you want to feed it gas on something that needs a continuous 500 hp ?
I own one of those little F150's with the 3.5 ecoboost. a 2011 when they still only made 370hp.
A few years ago we loaded up the goose neck toy trailer with parade toys for Rollag, then hooked our little single axle camper trailer behind the toy trailer. We faced a stiff wind all the way to Rollag. Nowhere near wide open throttle, but I suspect we used a continuous 300 hp. On the way home the wind had reversed directions so we faced an equil wind for another 240 miles home. We made right at 5 mpg both directions. On an application that needed a continuous 500 hp, I would bet it would make maybe 3 mpg ?? And nothing was wrong with the 3.5 ecoboost, as it normally makes 20 mpg or a bit better when run without that huge load.
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