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Old 10-15-2010, 11:46 AM   #1
RKassl
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'08, '09, '10 Chevy/Superglide/Morryde Pin Box

I am looking to talk to someone who has a late model Chevy where the bed wall height is about 22" or so, with a Superglide and Morryde pin box to understand the clearances you have with the Montana.

We are considering a 2011 3500, but it is really high. My 2004 bed box height is 19" compared to 22" on the 2011. From the top of the bed rail to the ground on my 2004 is about 53 1/2", the 2011 is around 58" or so. From the bed to the ground on the 2004 is around 35" on the 2011 it about 38". So I have a potential new truck that is a total of 6" higher than my 2004 that tows darn near level now.

Pullrite has a three inch riser kit to lift the hitch up to compensate for the increased bed height which should solve that problem. My concern is will I be towing nose high?

I can lower the Morryde one bolt hole, if I am correct if I lower the box it should lift the Monty up in front for needed clearance?

Any advice will be appreciated, I have been trying to figure this out
before I make any serious mistakes.

Thanks!
 
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Old 10-15-2010, 02:52 PM   #2
mhs4771
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Bob, are you looking at a SRW 3500? I believe they sit higher than the DRW. I just went from a 2005 dually to a 2011 dually and the bed height is just about identical, but as you noted the sides of the box are indeed higher. I had about 8 inches clearance on the 2005 and now I'm down to about 6 so I'll have to be a little more watchfull, but should be OK. One note on the 2011's, 6th gear is no longer locked out when in Tow/Haul Mode but you do have to put up with DEF which all newer Diesels will have to use eventually.
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Old 10-15-2010, 03:11 PM   #3
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but you do have to put up with DEF which all newer Diesels will have to use eventually.
They all use a DPF now, thanks EPA.
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Old 10-16-2010, 12:26 AM   #4
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Quote:
quote:Originally posted by mhs4771

Bob, are you looking at a SRW 3500? I believe they sit higher than the DRW. I just went from a 2005 dually to a 2011 dually and the bed height is just about identical, but as you noted the sides of the box are indeed higher. I had about 8 inches clearance on the 2005 and now I'm down to about 6 so I'll have to be a little more watchfull, but should be OK. One note on the 2011's, 6th gear is no longer locked out when in Tow/Haul Mode but you do have to put up with DEF which all newer Diesels will have to use eventually.
That may be an optical illusion since they have the same frame and suspension. The fenders on the dually are bigger, but not that much heavier (since they are made out plastic) that they would make the dually sit lower.
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Old 10-16-2010, 11:26 AM   #5
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Tom, sorry fenders are no longer plastic, GM when back to metal, I liked the plastic, could take small hits without denting. 18 and 20 inch tires are avail for SRW, while 17 are the only option for the DRW. So the larger tires might make SRWs sit a little higher. I have not personally checked a SRW, but from post on other sites it sounds like they do sit higher than the duallies.
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Old 10-16-2010, 12:35 PM   #6
Tom S.
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Quote:
quote:Originally posted by mhs4771

Tom, sorry fenders are no longer plastic, GM when back to metal, I liked the plastic, could take small hits without denting. 18 and 20 inch tires are avail for SRW, while 17 are the only option for the DRW. So the larger tires might make SRWs sit a little higher. I have not personally checked a SRW, but from post on other sites it sounds like they do sit higher than the duallies.
That makes sense - I forgot about tires/wheels being different. As for the fenders, a lot of people complained about the plastic because it didn't dent - it broke. Personally, I'd prefer the plastic too because it won't rust.
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Old 10-16-2010, 01:53 PM   #7
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Agreed on the no rust, I live in one of the Rust Capitals of the Country, and the 2005 I just traded in didn't have a spect of rust, hope this new one holds up as well. Do like the Exhaust Brake, plan to give it a real tryout next week as I make the round trip from Western NY out to Goshen to TrailAir for the installation of the Level-Up System. Tired of carrying all that wood for leveling.

Regards,
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Old 10-16-2010, 02:05 PM   #8
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I am really looking for specific help with my question, pleae!
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Old 10-16-2010, 02:55 PM   #9
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Bob, with the 2011s being so new, you may just have to do the trial and error method, probably minimum people with that exact combination. I have a Reese 20K Select series and didn't change a thing. Monty is still level, but I did loose some clearance between the bed rails and the underside of the Monty, but I'm still in the "Normal" Range.
You still didn't state if you were SRW or DRW as it does seem to make some difference.
Sorry if some posts got off the beaten track, was not intended to hi-jack the thread.
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Old 10-17-2010, 04:32 AM   #10
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Bob - I have the 3" riser on my Superglide. When hitched, my rig looks quite level to me. No issues as far as I am concerned.

Good luck.
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Old 10-17-2010, 05:51 AM   #11
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OK, back on topic. The only way you can know for sure is to measure. The two measurements that are vital is bed clearance and levelness of the trailer. In order for someone here to answer your question, they would have to have the exact same equipment in terms of TV, trailer, hitch and pin. That's not impossible but it does make coming up with the exact combination a bit harder.

Measure the bed height of your old truck, the hitch height and the inside bed height. Then measure the bed and inside bed heights of the trucks you are looking at to see what the difference is. Disregard what I said about the springs on the SRW and Dually being the same because of the wheel/tire differences effecting the height, so measure both. Then you can to look at the options you have to bring everything back in line. But first you need to establish whether there is a problem. If yes, come on back with the amount of difference so we can discuss your alternatives. Most hitches and pin boxes have adjustments, and there are other alternatives too.

EDIT: I just went to the GMC website and they give the inside bed dimension for all beds as being 21". Unfortunately they don't give bed heights from the ground, so you'll still need to measure those.
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Old 10-17-2010, 06:27 AM   #12
RKassl
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Tom, I have measured and re-measured. I was just hoping to find someone with my exact combination, no matter how much of a long shot it is.

Thanks for your help.
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Old 10-17-2010, 10:59 AM   #13
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Quote:
quote:Originally posted by RKassl

Tom, I have measured and re-measured. I was just hoping to find someone with my exact combination, no matter how much of a long shot it is.

Thanks for your help.
What measurements did you come up with? Do you know what the 'projected' difference will be with a 3500 SRW vs. DRW? (Inquiring minds want to know!)
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Old 10-17-2010, 05:08 PM   #14
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Bob, I have an 08 Chevy 4x4 DRW and the back corner of the top rail is right at 58" from the garage floor. The bed depth is as Tom mentioned, about 21 1/2". Depends on where you measure from. (On a rib or at the bottom of a rib)
When I first towed our 08 2955RL with the long standard pin box the back of the pin box mount would hit the top rail and the pin box mount had to be nipped to solve this problem.

Now the 3150RL with the short MorRyde pin box, there is no problem with the hitting. I don't have the pin box numbers in front of me to refer to the number for the long and short models.
The 3150 does have a heavier hitch weight and the truck would sit down on the overloads. After about 10,000 miles this summer there was some wear on the rubber overload pads on the truck. The rig did sit a little nose high but not enough to really be a problem.

Recently I installed Firestone airbags and Bilstein shocks. Much better ride all the way around. After changing the axles on the rig to 7000Lb axles and 6 leaf springs the rig sits a little higher and
more level.

All said and done that one ton will squat down some and this will help some with the 58" bed height causing the rig to ride high in the front. With the airbags I can raise the rear of the bed up to 60" or more. Right now with 20Lbs of air in the bags I am sitting at 59". I usually run at about 50Lbs and the truck will squat but not down onto the overloads.

My hitch is a standard 16K Reese.

Joe

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