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Author Topic: 5 or 8 rear leafs  (Read 677 times)
remingtongoose77
Single Axle Driver
*
Posts: 7


« on: May 06, 2017, 05:33:32 AM »

Hi,

I'm looking for some wisdom on the rear leafs on my truck. I have (2) sets of 5 leafs on each side of the rear of my truck. When it had a flat bed on it the top set of 5 was engaged. Now I took the bed off there is an air gap between the tips of the top stack and the frame mounts.

My question is this: I am rebuilding the entire truck and in this process replacing all springs and related parts. I see an option of buying an (Cool leaf rear stack and I assume I will still use the top set of 5. My plan for the truck is to tow a 5th wheel camper. Is anyone in or been in my situation. Should I keep the (2) stacks of 5 or go to the lower stack of (Cool and upper of (5) ?

I want a nice smooth ride like I have now, but I don't want to be deep in the travel when the camper is attached.

Thoughts and experiences please.



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Raymo
Global Moderator
3500HD Driver
*****
Age: 29
Location: Port Huron Area, MI
Posts: 381



« Reply #1 on: May 06, 2017, 10:02:56 AM »

I can tell you that with no longer having the overloads engaged, all bets are off. I have converted my truck to a pickup so there is hardly any weight on the back. Small bumps react like big bumps, and big bumps require two hands on the wheel when those overloads make contact. I can also tell you that I needed about 1,500lbs of tougne weight to stay on the overloads.

I do live in Michigan, though. So our roads may have a lot to do with it.  Grin
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'94 3500-HD, Cummins, Getrag, NP205. Shortend rear frame with a Pickup Bed. Dana 60 front, stock 80 rear.

'03 2500-HD 8.1 and Allison
remingtongoose77
Single Axle Driver
*
Posts: 7


« Reply #2 on: May 06, 2017, 01:18:28 PM »

Raymo,

So your calling the top stack the overload springs correct? I am planning to keep them, but our trucks come with either 5 or 8 springs on the primary stack, I guess that would be the lower stack.

Based on your comments I suppose I will replace the original 5 on the bottom and 5 on the top with new ones and abandon the 8 on the bottom and 5 on the top idea.

Thank you sir.

Any other comments welcome.
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AZTimT
One Ton Driver
**
Age: 39
Location: Western Montana
Posts: 61


K3500HD from when it wasn't just a sales gimmick!


« Reply #3 on: May 17, 2017, 10:17:19 PM »

My 5/5 setup only goes down 1.5-2 inches with a 30 ft steel gooseneck and backhoe right behind the tongue to put more weight on the truck and stay DOT legal. I get almost the same result with a 3000 lb water tote centered over the axle which is about what I was shooting for on tongue weight. I doubt an RV 5er is going to get much heavier than that.
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94 K3500HD (factory Monroe 4wd upfit) short wheel base 9' bed 454 no more/NV4500HD/NP261HD/D70 frt/D80 rear 5.13's Cummins powered with 3.73's.
93 C3500HD long wheel base parts truck 14' bed 6.5(gone)/NV4500HD/D80 4.63
95 C3500HD medium wheel base 11' bed 6.5/4L80E/D80 4.63
2000 C3500HD Monroe extended cab 9' bed, 6.5/4l80E/D80HD 4.63 will become 4wd with D70 front and repowered some day...
AZTimT
One Ton Driver
**
Age: 39
Location: Western Montana
Posts: 61


K3500HD from when it wasn't just a sales gimmick!


« Reply #4 on: May 19, 2017, 07:36:23 AM »

I stand corrected, measured it last night loaded at 36 1/4" and then 37 5/8" unloaded.



* HD loaded height.jpg (105.98 KB, 608x1080 - viewed 19 times.)

* HD unloaded height.jpg (102.22 KB, 608x1081 - viewed 21 times.)

* HD GN M59.jpg (184.84 KB, 1080x591 - viewed 22 times.)
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94 K3500HD (factory Monroe 4wd upfit) short wheel base 9' bed 454 no more/NV4500HD/NP261HD/D70 frt/D80 rear 5.13's Cummins powered with 3.73's.
93 C3500HD long wheel base parts truck 14' bed 6.5(gone)/NV4500HD/D80 4.63
95 C3500HD medium wheel base 11' bed 6.5/4L80E/D80 4.63
2000 C3500HD Monroe extended cab 9' bed, 6.5/4l80E/D80HD 4.63 will become 4wd with D70 front and repowered some day...
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