| 4.5-liter Duramax Diesel V8 [message #60515] |
Sun, 18 October 2009 08:41  |
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mike miller
Messages: 3576
Registered: February 2004
Location: Hillsboro, Oregon
Karma:
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Senior Member |
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4.5-liter Duramax Diesel V8 does look very good on paper. It gets better mileage than current motors and is the size of a small block with big block power. As the turbo is mounted on top the motor, I suspect it would not fit under a flat hatch. For more info see:
<http://www.autoblog.com/2007/06/15/gm-announces-clean-diesel-v8-for-pickups-and-the-hummer-h2/>
<http://jalopnik.com/347346/2010-45l-duramax-diesel-has-shockingly-brilliant-design>
<http://www.pickuptrucks.com/html/news/gm/fullsize/newdieselsfromgm.html>
But regardless of how good the engine looks, we will not be able to get it for a while. The project has been "indefinitely postponed." See:
<http://www.autoblog.com/2009/03/11/gm-4-5l-light-duty-diesel-v8-indefinitely-postponed/>
Interesting things on the horizon. I am hoping for something to replace our transmission/final drive.
| Tin Gerbil wrote on Sat, 17 October 2009 23:35 |
Rob;
This is the torque curve I was speaking of. One that increases as the rpm drops off. A good gas truck engine, with higher torque at 2000 than at any higher rpm.
Here is what we really want;
"General Motor's Tonawanda plant, just outside Buffalo, New York, will be the birthplace of GM's new 4.5-liter Duramax Diesel V8. The clean emissions light duty oil burner will find a place in the engine compartments of the Chevrolet Silverado and GMC Sierra half-ton pickups by the 2010 model year. It's expected to be rated in excess of 310-horsepower and 520 pound-feet of torque. In comparison, the 6.6-liter Duramax, currently used in GM's heavy duty pickup, is rated at 365-hp / 660 lb-ft." ...
Gordon
Larry and Cheryl wrote:
>
> I have Dick Paterson Stage II bored .030 over (461.2 cu in) and his furnished torque numbers show:
> RPM - Horsepower - Torque
> 2000 -- -- 185 -- -- 485
> 2500 -- -- 230 -- -- 483
> 3000 -- -- 271 -- -- 475
> 3500 --- - 308 -- -- 462
> 4000 -- -- 327 -- -- 430
> 4500 -- -- 320 -- -- 373
>
>
> This is what can be done with the 455/461 cu in we have.
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Mike Miller -- Hillsboro, OR -- on the Black list
(#2)`78 23' Birchaven Rear Bath -- (#3)`77 23' Birchaven Side Bath
More Sidekicks than GMC's and a late model Malibu called 'Boo'
http://m000035.blogspot.com
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