Rear leaf spring questions
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Tuned
Joined: May 2014
Posts: 317
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From: Richmond, VA
Rear leaf spring questions
Hey folks
I have a 1997 F-250HD (Old Body Style) with a service/utility body (the kind with all the doors on it). The truck has 275k miles on it, and still rides on the factory suspension (as far as I know).
In the rear, I have a 3+1 spring set up, spring code on the door is "MF".
C9 Axle, Rear GAWR is 6084lbs. The empty weight on the rear axle is 3500lbs, fully loaded I'm anticipating it to be 4000lbs.
What I've found for the "F" spring code for 1997 is for either F350 trucks or F250LD trucks. The F350 springs are a 4+1 design rated for 2,700# spring capacity. The F250LD springs are 3+1 design rated for 1,400# spring capacity (this was on trucks with under-8500# GVWR, mine is over-8500 GVWR).
I'd like to upgrade the suspension so the rear end no longer sags. Am I safe to buy a 4+1 spring set rated at 2800# per spring, or should I upgrade to a 6+1 spring set rated at 3100# or 4200#.
Empty the trucks weight (per the CAT scale)
GVW - 6500
Front GAW - 3000
Rear GAW - 3500
And I expect to carry an additional 500+ pounds in the bed daily.
Thanks all.
I have a 1997 F-250HD (Old Body Style) with a service/utility body (the kind with all the doors on it). The truck has 275k miles on it, and still rides on the factory suspension (as far as I know).
In the rear, I have a 3+1 spring set up, spring code on the door is "MF".
C9 Axle, Rear GAWR is 6084lbs. The empty weight on the rear axle is 3500lbs, fully loaded I'm anticipating it to be 4000lbs.
What I've found for the "F" spring code for 1997 is for either F350 trucks or F250LD trucks. The F350 springs are a 4+1 design rated for 2,700# spring capacity. The F250LD springs are 3+1 design rated for 1,400# spring capacity (this was on trucks with under-8500# GVWR, mine is over-8500 GVWR).
I'd like to upgrade the suspension so the rear end no longer sags. Am I safe to buy a 4+1 spring set rated at 2800# per spring, or should I upgrade to a 6+1 spring set rated at 3100# or 4200#.
Empty the trucks weight (per the CAT scale)
GVW - 6500
Front GAW - 3000
Rear GAW - 3500
And I expect to carry an additional 500+ pounds in the bed daily.
Thanks all.
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