Rear leaf spring advice

GRTvan

New member
2001 Ford E350 EB with leaf springs that are pretty much flat. The van weighs in at a svelte 8100 pounds and the rear weighs 4700lbs. This is with 3/4 tank of diesel, driver and no other occupants or loaded with anything else that what is carried in it everyday. When I add passengers and load up the van, I am looking at adding roughly another 800 lbs to the vans total weight. Current flat leaf springs are supposed to handle 2775lbs each. At least from what I could find on the internet. We do alot of driving between the south east to CO, MT etc. We also take the van on fire roads to trail heads for hiking.

Here is the question. Do I go back to the 2775 lb leaf springs or go to the next size up leaf pack which is 3460 per leaf.

The 2775 lb leaf springs come in either a 3 or 4 leaf with overload spring. So thoughts on which way to go there. The 3460lb leaf is a 9 leaf with overload spring. The 9 leaf pack has very little arch so little or no increase in stock ride height.

I would like to do a Weldtec lift in the next year or two so this may be a temporary fix. But looking at the leaf springs, as they are now, I need to fix this next week.
 

Bayou Boy

Adventurer
More leafs are going to be more supple every time. Take that into consideration.

Also you need more than 800# of excess capacity. Go with the heavier springs.
 

shade

Well-known member
2001 Ford E350 EB with leaf springs that are pretty much flat. The van weighs in at a svelte 8100 pounds and the rear weighs 4700lbs. This is with 3/4 tank of diesel, driver and no other occupants or loaded with anything else that what is carried in it everyday. When I add passengers and load up the van, I am looking at adding roughly another 800 lbs to the vans total weight. Current flat leaf springs are supposed to handle 2775lbs each. At least from what I could find on the internet. We do alot of driving between the south east to CO, MT etc. We also take the van on fire roads to trail heads for hiking.

Here is the question. Do I go back to the 2775 lb leaf springs or go to the next size up leaf pack which is 3460 per leaf.

The 2775 lb leaf springs come in either a 3 or 4 leaf with overload spring. So thoughts on which way to go there. The 3460lb leaf is a 9 leaf with overload spring. The 9 leaf pack has very little arch so little or no increase in stock ride height.

I would like to do a Weldtec lift in the next year or two so this may be a temporary fix. But looking at the leaf springs, as they are now, I need to fix this next week.
If you vary the load by a lot and often, you might consider air bags added to the current springs. You'll be able to tune the suspension to the load. If articulation is a concern, Daystar may make a cradle that'll work with a standard bag size so you don't have to spend more on a taller bag with more travel.
 

GRTvan

New member
Thanks for the info. Alcan looks amazing may check them out to see what they could do. Just trying to fix this current issue knowing I will be lifting the van in the next couple of years.

The statement about overload capacity is interesting. From stock weight is there some type of standard percentage you should have for overload. Makes sense that you dont want your springs at their max carry weight all the time.
 

wanderer-rrorc

Explorer
I added an entire new leaf pack from an f350 because mine in my EB diesel E350 were pretty flat after the build out.

Gained 4in of lift and so much better ride and roll control without harshness.

I got the packs at a junkyard for $50. Cut the eyes off the main leaf and bolted them to my original main leaf with factory u bolts.

Love them..but I did need to add a 2in front lift to help with leveling out more.

If I was gonna keep it stock height I would have taken one of the middle leaf springs out.

Details in my build in my signature

Sent from my VS987 using Tapatalk
 

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