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Thread: Talk me into a Dmax

  1. #1
    Join Date
    Dec 2009
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    10

    Default Talk me into a Dmax

    I just brought home to the wife a beatiful F350 PSD. I'm all excited- boy does she hate it!! Too noisy, too big, too rough a ride. I wanted a truck big enough to carry a 4000 pound camper and tow a 4000 pound boat. Don't want a dually.

    I need a bit more refined truck to make the queen happy. Better ride, quieter, not such a big climb into the cab.

    Convince me to get a duramax- is it quieter that PSD? I'm having a hard time finding 3500 GM's SRW and extended cab. Can you do a 2500HD and do some suspension mods? I may look into a slightly lighter camper.

    Help a guy out here. Thanks.

  2. #2
    Join Date
    Aug 2003
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    Tucson, AZ
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    I carry a 4000# camper and tow a 4000#? Jeep Wrangler behind a 1ton ext-cab dually. I wouldn't advise going to a 3/4 ton if you stick with a 4000# camper. I can't speak to the desirability of the SRW, but I believe the dually gives me greater stability when I have that much weight on the truck.
    Bob
    2009 LTZ 3500 D/A ext-cab DRW
    1993 11' 3" Lance cabover camper

  3. #3

    Default

    Welcome aboard!

    Currently own a 3500 SRW and like it, ride empty is actually smoother than a 2500 series, empty. Its worth the wait, if you can find one. Agreed on dually empty ride, I don't care for it - my wife is less than thrilled when she has to take my truck anywhere!

    You could use Timbren springs or air-bag a 2500 series and be fine mechanically IMO, for occassional weekend recreational service. With either a 3500 or 2500, you are already well over the limit of the stated GVW ratings...8K (people, fuel, gear) truck + 4K camper = 12K on truck + 4K boat = ~16K GCVW, with likely 12K+ on truck...you are right on the legal edge of your load range E tire capacity of ~3400# per tire.

    This is what a DOT official will question if you are ever weighed on your way to or from the lake, since you are not commercial, but still must adhere to tire ratings! Important is getting your boat trailer set up to carry boat weight safely, minimizing tongue weight, maintaining downhill stability. The boat's trailer tires and braking system must be kept in top shape at all times! Are there 14" or 15" wheels on the trailer?

    Where do you live? Travel? A dually would be advisable in any case, but if you are a cool weather flatlander and go to the same lake six weekends per year...well that is different than if you live in Nevada or Arizona and tow all year round to Lake Mead in the heat, on hot roads where you'll need ALL SIX tires under you! Any mountain driving should be done with a dually, like your current F-350 or a 3500 series DMax.

    Good luck!
    Last edited by Mark Rinker; 12-08-2009 at 06:41.
    2011 Chevrolet Tahoe 5.3L daily driver
    • Previous owner of two 1994 6.5L K3500s, '01, '02, and '05 6.6L K2500s, '04 C4500, '06 K3500 dually, '06 K3500 SRW, '09 K3500HD SRW, '05 Denali
    • Total GM diesel miles to date : ~950K

  4. #4
    Join Date
    Jan 2005
    Location
    St. Louis, Missouri (pronounced misery)
    Posts
    203

    Default

    Man, it is SOOOOO tempting to bust out the FORD jokes. I won't go there!

    I just brought home to the wife a beatiful F350 PSD. I'm all excited- boy does she hate it!! Too noisy, too big, too rough a ride. I wanted a truck big enough to carry a 4000 pound camper and tow a 4000 pound boat. Don't want a dually.

    I need a bit more refined truck to make the queen happy. Better ride, quieter, not such a big climb into the cab.
    Sounds to me like you don't need much talkin' You know what they say about mamma?

    The Ford is DEFINITELY louder, I personally think the Duramax is the most refined truck out there, but then I'm partial.

    I do agree with Mark though, you really DO need a 1 ton if you are going SRW! As far as I'm concerned if you drive a 1 ton Duramax and a 1 ton powerstroke, there's no mistaking which one is better. DON'T believe the hype, the Duramax rides better, is quieter, and has more power than you'll ever use!

    That's all I got to say about that!
    Scott
    St. Louis, MO


    '06 Silverado K2500 4x4 Crew Cab D/A "Big Max" AmpResearch retractable Running Boards, 4" Turbo back Kennedy Exhaust, Kennedy Custom Tune!
    '99 BMW K1200LT "Special K" my other "SUV"
    '07 Salem by Forest River Fifth Wheel Toy Hauler

  5. #5

    Default

    Better brakes and Allison's grade braking system, too...
    2011 Chevrolet Tahoe 5.3L daily driver
    • Previous owner of two 1994 6.5L K3500s, '01, '02, and '05 6.6L K2500s, '04 C4500, '06 K3500 dually, '06 K3500 SRW, '09 K3500HD SRW, '05 Denali
    • Total GM diesel miles to date : ~950K

  6. #6
    Join Date
    Dec 2009
    Posts
    10

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    Thanks for your feedback. I knew I was opening myself up to few shots saying I had a F*rd on a GM forum, but you have been quite civil .

    I'll go test a Duramax and see how it goes.

  7. #7

    Default

    ...it'll Go Like Stink!
    Last edited by Mark Rinker; 12-09-2009 at 13:33.
    2011 Chevrolet Tahoe 5.3L daily driver
    • Previous owner of two 1994 6.5L K3500s, '01, '02, and '05 6.6L K2500s, '04 C4500, '06 K3500 dually, '06 K3500 SRW, '09 K3500HD SRW, '05 Denali
    • Total GM diesel miles to date : ~950K

  8. #8
    Join Date
    Apr 2001
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    Quote Originally Posted by Mark Rinker View Post
    ...it'll Go Like Stink!
    I remember that statement from TV commercials for the Chevy Baretta (1988 M/Y). I bought one, and it did!
    1985 Blazer 6.2
    2001 GMC 2500HD D/A
    dmaxmaverick@thedieselpage.com

  9. #9
    Join Date
    Dec 2009
    Posts
    10

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    Well, I went and drove an 07 new generation silverado 2500 with the Duramax. Very nice powertrain and ride. I turned on the trip computer and it showed 7 mpg!! I know trip computers are not always precise and factors depend on when it was reset. What could be expected for mileage on this rig? Are the 06 Duramax engines noisier than the new generation?

    One other comment- that front bumper is sure ugly!

  10. #10
    Join Date
    Jul 2007
    Location
    Rome,Pa
    Posts
    78

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    Ya gotta love the ride of a chevy !!! I know your looking for a SRW truck, but i absolutlely love my truck. With the trailers or without. The ride is superior to any. I drive Ford 350 DRW all day at work,, have for 26 yrs. my current work truck is an 08 , and i hate it. The motor blows, the drivetrain blows, the ride blows, and it's noisy and gutless !! Anyway .... i wouldn't pay too much attention to the 7 mpg that you saw. My 3500 gets between 14 and 15 putzing around town. 20 -21 on the highway, without the trailers. Towing i usually see 10-12 depending on where i'm headed, and how quick i'm trying to get there.

    Just my .02 worth. Good luck on your search
    2007 Silverado 3500HD - Stock
    Owens Glass Step Running Boards, Go Industries Dually Mud Flaps, Putco Chrome Vent Visors & Mirror Covers. Bilstein Shocks. Baldwin Filters

  11. #11
    Join Date
    Dec 2009
    Posts
    10

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    Ok- I found a real nice 07 Classic 2500HD LT3 Dmax that I love the drive and ride. Its stock as can be.
    My issues I need to clear before I jump on it:
    Rear spring capacity- I want to put a 3500 pound camper in it- a local spring shop can build and install a 3 leaf overload pack for $600 installed.

    Outside of that is the wheels and tires- It has the 245-16 e-rated tires at 3000 pound rating. I'd like to upsize that without going to the 19.5" commercial wheels and tires- any thoughts on what to get?

    Should I upsize the wheels or is there a good upgrade tire I can put on the factory premium wheels?

  12. #12
    Join Date
    Jan 2005
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    St. Louis, Missouri (pronounced misery)
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    Quote Originally Posted by fish mojo View Post
    Ok-

    Should I upsize the wheels or is there a good upgrade tire I can put on the factory premium wheels?
    I KNOW the larger tires LOOK great! I will tell you what my experience has been. I went up to 265/75/16 and lost about 4 miles per gallon. I WAS getting 23 MPG at 65 MPH. Now, 18-19 at best. I can STILL get 23 MPG, but I have to slow down to 55 MPG.

    So, if it is mileage that you are chasing, those stock tires work pretty well!
    Scott
    St. Louis, MO


    '06 Silverado K2500 4x4 Crew Cab D/A "Big Max" AmpResearch retractable Running Boards, 4" Turbo back Kennedy Exhaust, Kennedy Custom Tune!
    '99 BMW K1200LT "Special K" my other "SUV"
    '07 Salem by Forest River Fifth Wheel Toy Hauler

  13. #13

    Default

    Quote Originally Posted by fish mojo View Post
    Ok- I found a real nice 07 Classic 2500HD LT3 Dmax that I love the drive and ride. Its stock as can be.
    My issues I need to clear before I jump on it:
    Rear spring capacity- I want to put a 3500 pound camper in it- a local spring shop can build and install a 3 leaf overload pack for $600 installed.

    Outside of that is the wheels and tires- It has the 245-16 e-rated tires at 3000 pound rating. I'd like to upsize that without going to the 19.5" commercial wheels and tires- any thoughts on what to get?

    Should I upsize the wheels or is there a good upgrade tire I can put on the factory premium wheels?
    • Unless you plan to leave the camper on all the time, you might try it and see how it works on the stock suspension, first. Air bags would be really nice to have a fully adjustable setup, depending on fuel / gear load / trailer in the future
    • 285/75/16 Michelin LTX / ATs are the stuff, IMO. 3400# rating - no great mileage drop that I can measure, but most of mine is all loaded, towing anyway at 10 or 11mpg - can't speak to empty mileage.
    2011 Chevrolet Tahoe 5.3L daily driver
    • Previous owner of two 1994 6.5L K3500s, '01, '02, and '05 6.6L K2500s, '04 C4500, '06 K3500 dually, '06 K3500 SRW, '09 K3500HD SRW, '05 Denali
    • Total GM diesel miles to date : ~950K

  14. #14
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    Dec 2009
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    The 285's are a lot for the 6.5" wheel don't you think?

  15. #15
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    Quote Originally Posted by fish mojo View Post
    The 285's are a lot for the 6.5" wheel don't you think?
    I think he meant 265. It would be more consistent with the rest of what he's said (and that's what he said he has installed). The 265/75/16E tire has a capacity rating of 3415#. A 285/75/16E (very rare tire) is significantly more, while the 285/75/16D is 3305#. The stock 245 is 3042#.. And, yes. 285's are too much for the OEM wheel (according to tire/wheel mfg's), although a bunch of folks do it anyway.
    1985 Blazer 6.2
    2001 GMC 2500HD D/A
    dmaxmaverick@thedieselpage.com

  16. #16

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    (First - sorry for being unclear with my recent posts. With as many trucks that have come and gone in the last few years, the various tire sizes we have run have become blurry...)

    Today, I ran out to the driveway and discovered the tires on my current 2006 are, in fact 285/75/16s - marked with max load capacity of 3415. Went to another recent post and corrected the listing to read 285 rather than 265, as well.

    When I bought this used '06 in the fall of 2008, it already had a set of 285 skins on. I wore them out this year, and recently had the exact same tires 're-installed'. So far, no issues to report, lots of highway miles on, some offroad/mud use when hunting, and now starting winter snowplowing duty.

    Probably 265s would be a better idea, I only have 285s because I dropped the truck off for maintenance and they replaced the tires with the "...same size that came off of it", per my telephoned request that day...I thought I was getting 265s...must be getting old and forgetful...LOL
    Last edited by Mark Rinker; 12-12-2009 at 18:57.
    2011 Chevrolet Tahoe 5.3L daily driver
    • Previous owner of two 1994 6.5L K3500s, '01, '02, and '05 6.6L K2500s, '04 C4500, '06 K3500 dually, '06 K3500 SRW, '09 K3500HD SRW, '05 Denali
    • Total GM diesel miles to date : ~950K

  17. #17
    Join Date
    Jun 2000
    Location
    Morrisville, VT, USA
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    2,401

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    Mark, does your 3500 have something lower than 3.73's in it? That would explain why it hauls 285-75's without strain. I don't think my 2500 would like pulling 285's.
    I'm about ready to put new tires on the Sierra, and ther're going to be Michelin, 265-75, LR E, and nothing else. After 2 years, and 36K miles of GY Tracker II's, I'm ready to go back to a tire which is actually round!
    2008 Jaco Seneca 35' motor home (Kodiak 5500 chassis). Pulling 18' Wells Cargo enclosed trailer, with 2016 Miata in it.

  18. #18

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    Nope, same gears - 3.73s. Thats all anyone has ever gotten from GM behind the Duramax/Allison in the 2500/3500 series. You can't even order other gearsets!

    I think you'll like the 265s. The 285s rub on the front fender well flares when you turn sharp and hit a bump, like backing out of the driveway. Kinda annoying...

    I do like how they look in the wheelwells!
    2011 Chevrolet Tahoe 5.3L daily driver
    • Previous owner of two 1994 6.5L K3500s, '01, '02, and '05 6.6L K2500s, '04 C4500, '06 K3500 dually, '06 K3500 SRW, '09 K3500HD SRW, '05 Denali
    • Total GM diesel miles to date : ~950K

  19. #19

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    I am running 265/75/16E on an 8" wide wheel and towing is very stable. Over Thanksgiving I drove it 2700 miles with 21mpg hwy for the trip. I know I have pulled up next to a running SD in a parking lot and could not hear my 6.6 running over the SD clatter. More refined is a good way to describe the Duramax. Here is a recent comparison done by The Diesel Page between the Ford SD and the Chevy Duramax.

    http://www.thedieselpage.com/duramax/2007PullOff.htm

    Since you found a nice 07 Classic, here is an earlier pull off article featuring a new 06 LBZ which is the same as the 07 Classic LBZ.

    http://www.thedieselpage.com/features/pulloff2006c.htm

    Hope these help with your decision.
    Last edited by TheJDMan; 12-27-2009 at 19:07.
    2007 Silverado Classic 2500HD, EC, SB, 4x4 LBZ, Allison 1000 6 speed, Banks 3" Intercooler Tube, BD LH Exhaust Manifold, Diamod Eye Downpipe, MBRP 4" Cat Delete Pipe, Banks 4" Monster Exhaust, GoodYear 265/75R 16E, Eagle Alloy 16"x8" wheels, Autometer EGT/Boost gauges, 50 gal in bed aux fuel tank.


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