DURAMAX - Chevrolet Forum - Chevy Enthusiasts Forums
Join Date: Jan 2005
Posts: 34
United States

January 31st, 2005, 1:15 PM   #1  
DURAMAX



YESTERDAY I DROVE A NEW 2005 SILVERADO 2500 HD WITH A DURAMAX. I HAD PREVIOUSLY WRITTEN TO SOMEONE HERE ATHAT THIS ENGINE WILL PULL TO ABOUT 4200 RPM. GUESS I WAS MISTAKEN, IT PULLED TO ABOUT 3200 RPMS. THATS WHERE THE REDLINE WAS ON THE TACH, AND THE ALLISON WOULDNT LET IT WIND ANY HIGHER WITHOUT SHIFTING TO THE NEXT GEAR. THEY STILL FEEL LIKE THE STRONGEST DIESEL OF THE BIG THREE. I JUST WISH THEY HAD MORE RIGHT OFF THE LINE. IM A DRAG RACER AND ALONG WITH MIDRANGE TORQUE, I LIKE A KICK IN THE PANTS WHEN YOU FIRST MASH THE THROTTLE. MAYBE I'LL SAVE SOME BUCKS AND BUY AN 8.1 INSTEAD. IT WILL SUCK ALOT MORE FUEL BUT I WILL NEVER RECOUP THE INITIAL COST OF A DIESEL IN FUEL MILEAGE SAVINGS ANYWAY.</P>

 
Join Date: Dec 2005
Posts: 18
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December 12th, 2005, 3:16 AM   #2  
DURAMAX

If you get a superchips or hyperchip tuner for the duramax engine. You can increase your torque and horsepower by almost 45%. The tuners for somereason just set the diesels into full tilt boogie. With the gasoline engines you gain around 9 to 12% max.

 
Join Date: Dec 2005
Posts: 35
United States

December 18th, 2005, 11:55 PM   #3  
DURAMAX

the new duramax for 2006 has 360 hp. it my be a little better of line

 
Join Date: Feb 2007
Posts: 2

February 10th, 2007, 1:35 AM   #4  
RE: DURAMAX

Justtraded up my 2005,3500with 5 speed Alison foran 07, 2500hd with a 6 speed Alison. The power difference both top and bottom end snaps my head back in the 6 speed verses the 5 speed. I haven't really stomped on it yet as I am still breaking in the engine but the difference is really noticeable. I am having serious issues with the difference in gas mileage though. The 5 speed 3500 got 13 -15mpg in the city and 18 -22 mpg highway from day one of owning the truck. The 6 speed 2500 gets 8 -10 mpg in the city and 14 mpg at best highway......sure I only have 200 miles on it but, come on, how much does the break in really effect the gas mileage? I am thinking that I may have a problem with the truck but the dealership swears that after the break in period the mileage will improve........I doubt it would improve that much though, right? I hope I am not wrecking anything more by driving it and not getting it checked further, but like I said the dealership says nothing is wrong just because of the mileage. I even told them that it backfired on me once and they said it wasn't a big deal. I just have a bad feeling about it, does anyone have any suggestions?

 
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Join Date: Dec 2006
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February 10th, 2007, 4:06 PM   #5  
RE: DURAMAX

The HP increases that can be dialed in with a programmer in seconds are incredible compared to the gasoline versions. Beware though that the programmer may void part of your warranty. SCTFlash.com

 
Join Date: Jan 2007
Posts: 10

February 10th, 2007, 6:40 PM   #6  
RE: DURAMAX

Do a search for 'nastygirl' at dieselplace.com

That truck is pushing over 1000 HP on just diesel (no drugs)....

 
Join Date: Sep 2006
Posts: 48

February 11th, 2007, 5:10 AM   #7  
RE: DURAMAX

Ratman what are you going to use the truck for? The Duramax if great for hauling very heavy trailers or loads, but will never be a great streat rod because of its weight. My ext. cab Duramax is 6700 lbs. empty and is a great workhorse with tons of torque which is what you need to haul heavy loads. If you are not going to haul heavy loads you should save some serious money and get a 1500HD with a 6.0 gas. It will probably outrun a Durmax and be cheaper to maintain, just will not haul as much load. Look at the weights of the loads you will be hauling and the tow rating chart for the pickups, this will save you a lot of money and give you a truck you will enjoy more and will be easier on your pocket book. If you will look at the power curve charts for the Duramax vs. any of the gas V-8's youwill see why it is not necessary for the Duramax to go over 3400 RPM's. The Durmax will start pushing 500 lbs. of torque at not a whole lot over 1000 RPM'sso they do not really need to wind up like a gas engine. Diesel's are a completely different animal than gas engines and are made to work hard all day long, year in and year out.

 
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February 11th, 2007, 2:17 PM   #8  
RE: DURAMAX

ORIGINAL: art

The Duramax if great for hauling very heavy trailers or loads, but will never be a great streat rod because of its weight.
I used to believe the same thing, until I saw a modified F350 Dually smoke every import and every other car at the race track (1/4 mile dragstrip). These engines can handle alot more HP than their gasoline counterparts (Obviously tranny and other parts must be strengthened to handle the massive HP and Torque), but the results are impressive to say the least.

 
Join Date: Jan 2007
Posts: 10

February 11th, 2007, 2:21 PM   #9  
RE: DURAMAX

ORIGINAL: art

Ratman what are you going to use the truck for? The Duramax if great for hauling very heavy trailers or loads, but will never be a great streat rod because of its weight. My ext. cab Duramax is 6700 lbs. empty and is a great workhorse with tons of torque which is what you need to haul heavy loads. If you are not going to haul heavy loads you should save some serious money and get a 1500HD with a 6.0 gas. It will probably outrun a Durmax and be cheaper to maintain, just will not haul as much load. Look at the weights of the loads you will be hauling and the tow rating chart for the pickups, this will save you a lot of money and give you a truck you will enjoy more and will be easier on your pocket book. If you will look at the power curve charts for the Duramax vs. any of the gas V-8's youwill see why it is not necessary for the Duramax to go over 3400 RPM's. The Durmax will start pushing 500 lbs. of torque at not a whole lot over 1000 RPM'sso they do not really need to wind up like a gas engine. Diesel's are a completely different animal than gas engines and are made to work hard all day long, year in and year out.
There are plenty of DMAX trucks out there that can spank a brand new Corvette....the DMAXwill bemodified of course....easy to do with programmers.....

Nasty Girl will run in the 10's.....I would consider that to be a pretty good street rod....

Don't believe me? Check out dieselplace.com and read about what some of these guys are doing to their trucks....

 
Join Date: Sep 2006
Posts: 13

February 12th, 2007, 10:52 PM   #10  
RE: DURAMAX

I've got 101 miles on my 2007 Duramax and I am already getting 13 mpg.

 
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