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Question on hitch and pin box height.

Toolguy5
Explorer II
Explorer II
Went from a 2006 2500 HD Silverado to a 3500 HD Sierra Denali. Buying a new B&W companion slider. The Slider has a height adjustment of 17 to 19 inches. To get the 6 inches of clearance from 5er overhang to truck bed rails I need the 19inches of height on hitch.
That puts the 5er about 8 inches off level from front to back. There are 2 holes left where the pin box can be raised. If I take the pin box all the way up to narrow the distance from front of 5er to rear. Will that also reduce the 6 inch clearance I need for bed rails.
Just having a difficult time trying to envision the outcome.
Dan & Patty
Miss Pickles the Pomeranian Princess Rainbow Bridge 8/8/2023
2020 GMC 3500 Sierra Denali 6.6 Duramax / Allison tranny
2021 Jayco Eagle 319MLOK
BWRVK 3710 companion
Maddy the Pampered Pom @ Rainbow Bridge 12-3-2013
18 REPLIES 18

partsman01
Explorer
Explorer
SanMarMor wrote:
If you raise the pin box, isn't that going to lower the body of the trailer back down closer to the rails?


Yes it will, to increase height one needs to raise hitch and lower pin box, that is the basic adjustment as I understand it, in fact forget what my old 1996 GMC 3/4 ton height was, as now with it written off I now have a 2003 GMC 3/4 ton, and it has a factory lift, so will have to see if I can adjust mine for the right clearance.

SanMarMor
Explorer
Explorer
If you raise the pin box, isn't that going to lower the body of the trailer back down closer to the rails?
2007.5 Chevy 3500HD Crew DMax Dually 4x4 w/ Curt Q5 20K Hitch
2011 Sabre 31RETS-6 w/ TrailAir Pin

44 nights in 2013, 37 nights in 2014, 27 nights in 2015, 29 nights in 2016
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Toolguy5
Explorer II
Explorer II
CumminsDriver wrote:
I have the B&W Companion Hitch in the middle position, with the pin box raised up 2" from the lowest position. The trailer is just slightly nose high with 6" of clearance between bed rails and trailer.
Rich


Doing some measuring I believe that is where I will end up after installing the 2 inch lift kit, (axle alignment).
Dan & Patty
Miss Pickles the Pomeranian Princess Rainbow Bridge 8/8/2023
2020 GMC 3500 Sierra Denali 6.6 Duramax / Allison tranny
2021 Jayco Eagle 319MLOK
BWRVK 3710 companion
Maddy the Pampered Pom @ Rainbow Bridge 12-3-2013

Rich1961
Explorer
Explorer
I have the B&W Companion Hitch in the middle position, with the pin box raised up 2" from the lowest position. The trailer is just slightly nose high with 6" of clearance between bed rails and trailer.
Rich
2016 Chevrolet/Duramax 3500HD Dually Crew Cab B&W RVK 3700 5th Wheel Hitch
2014 Arctic Fox 29-5T

Toolguy5
Explorer II
Explorer II
I sold the hitch when I sold my 2006 2500 HD. I have a new hitch on order. The dealer is unable to install until mid June. We are looking at the LCI correct track system to raise 2 inches. Then once the hitch is installed we can play with the Pin box. So between the pin box and hitch height adjustment I feel a lot better on being able to get close.

My pin weight is right around 2100 lbs.

Thanks for all the help.
Dan & Patty
Miss Pickles the Pomeranian Princess Rainbow Bridge 8/8/2023
2020 GMC 3500 Sierra Denali 6.6 Duramax / Allison tranny
2021 Jayco Eagle 319MLOK
BWRVK 3710 companion
Maddy the Pampered Pom @ Rainbow Bridge 12-3-2013

Lantley
Nomad
Nomad
rhagfo wrote:
hbillsmith wrote:
Read somewhere that adding the LCI Correct Track system raises 2 inches.


X2 that is correct, I hope to find the time in the next month to install mine.

I just had Correct track system installed. Raise the rear 2".
Allowed me to Increase bedrail clearance from a marginal 4" to a comfortable 7".
19'Duramax w/hips, 2022 Alliance Paradigm 390MP >BD3,r,22" Blackstone
r,RV760 w/BC20,Glow Steps, Enduraplas25,Pedego
BakFlip,RVLock,Prog.50A surge ,Hughes autoformer
Porta Bote 8.0 Nissan, Sailun S637

Shepherd
Explorer
Explorer
Whats your pin weight? With my unit I have 5" clearance and have had no contact with bed rails, have cone close on my driveway,
2018 Ram 3500 CC aisin/4.10
2014 Rushmore Monticello

rhagfo
Explorer III
Explorer III
hbillsmith wrote:
Read somewhere that adding the LCI Correct Track system raises 2 inches.


X2 that is correct, I hope to find the time in the next month to install mine.
Russ & Paula the Beagle Belle.
2016 Ram Laramie 3500 Aisin DRW 4X4 Long bed.
2005 Copper Canyon 293 FWSLS, 32' GVWR 12,360#

"Visit and Enjoy Oregon State Parks"

ACZL
Explorer
Explorer
Off subject, but looking at your pics, you may want to consider replacing the trailer susp w/ a Equa-Flex or at the very least install wet bolts.
2017 F350 DRW XLT, CC, 4x4, 6.7
2018 Big Country 3560 SS
"The best part of RVing and Snowmobiling is spending time with family and friends"
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hbillsmith
Explorer
Explorer
Read somewhere that adding the LCI Correct Track system raises 2 inches.
Wildcat2016-295rsx GMC2015-2500HD-DblCab D'max/Allisn+4x4 6.6'Bed
Maxxis235/80/16E;Andersen Ultimate2+4"offset;Airlft1 WirelessComp;GroundCtrl3;MorRyde RubbPinBox+CRE3000;3-Slidecovrs;Champion3100w/DIY ExtndRun;10'Portabote+5hp;Furrion48cam
Visited States

RCMAN46
Explorer
Explorer
You and several thousand others is a victim of the bed height war the big three has had in the last 10 years.

For some reason they make the 3500 series trucks for the kids that want a macho high lifted truck and not a truck that can tow a trailer unless it is one of the newer ones that exceeds 13 ft in height.

Me_Again
Explorer II
Explorer II
Toolguy5 wrote:
Went from a 2006 2500 HD Silverado to a 3500 HD Sierra Denali. Buying a new B&W companion slider. The Slider has a height adjustment of 17 to 19 inches. To get the 6 inches of clearance from 5er overhang to truck bed rails I need the 19inches of height on hitch.
That puts the 5er about 8 inches off level from front to back. There are 2 holes left where the pin box can be raised. If I take the pin box all the way up to narrow the distance from front of 5er to rear. Will that also reduce the 6 inch clearance I need for bed rails.
Just having a difficult time trying to envision the outcome.


You need to hook it up with the pin weight on the truck to know what you are up against. The new trucks with soft springs for a nice ride settle more than older trucks.

Chris
2021 F150 2.7 Ecoboost - Summer Home 2017 Bighorn 3575el. Can Am Spyder RT-L Chrome, Kawasaki KRX1000. Retired and enjoying it! RIP DW 07-05-2021

Me_Again
Explorer II
Explorer II
If those are 15" ST tires, you can gain some height and reliability with LT235/85R16E tires. Check that you have at least 33" center to center on your axles and some extra room above the current tires.

Chris
2021 F150 2.7 Ecoboost - Summer Home 2017 Bighorn 3575el. Can Am Spyder RT-L Chrome, Kawasaki KRX1000. Retired and enjoying it! RIP DW 07-05-2021

laknox
Nomad
Nomad
Thanks for posting the pics. Nothing to do but add a sub-frame of the height you need to get level. 2-3" nose-high isn't too bad, but 8" is really too much. Doing this will also allow you to get =more= than the 6" minimum clearance you're seeking, if you so desire.

Lyle
2022 GMC Sierra 3500 HD Denali Crew Cab 4x4 Duramax
B&W OEM Companion & Gooseneck Kit
2017 KZ Durango 1500 D277RLT
1936 John Deere Model A
International Flying Farmers 64 Year Member