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DO "U" Code SD Springs Provide Lift

 
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Old 01-21-2016, 12:36 PM
Areyouliving
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DO "U" Code SD Springs Provide Lift

I'm ordering my PMF RSK and I need to order shocks as well. I am getting the smallest lift RSK (2.25 I think) and I plan to run the U code SD springs since I have a 460 in my truck. If those springs add lift then I need to potentially go up to the next length of shock. And besides the adjustable track bar, is there anything else I should consider adding to my list?
I appreciate any insight here.
 
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Old 01-22-2016, 07:45 PM
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Originally Posted by Areyouliving View Post
I'm ordering my PMF RSK and I need to order shocks as well. I am getting the smallest lift RSK (2.25 I think) and I plan to run the U code SD springs since I have a 460 in my truck. If those springs add lift then I need to potentially go up to the next length of shock. And besides the adjustable track bar, is there anything else I should consider adding to my list?
I appreciate any insight here.


Lift over what?

the PMF kit was designed to use SD length spring, not necessarily for a specific rate. the 2.25" is the drop of the spring mounting points

Plan on using longer than stock shocks no matter what SD spring you are using.

What size tires are you planning on going with?
 
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Old 01-23-2016, 10:48 AM
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heres my 97 f350 460 zf5

pmf 2.25 with u codes in front

c codes in rear with 5 inch superduty readylift block.

on 315/75/r16






 
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Old 01-23-2016, 11:23 AM
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I really like the way it sits. I'd like to get my front up. Not quite sure how to do it without sacrificing the ride I've already got with adding a leaf. There must be a taller spring that has a same as stock ride.
 
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Old 01-23-2016, 02:18 PM
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RSK kit with Super Duty springs will dramatically change the ride for the better. Brad has made that statement many times.
 
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Old 01-23-2016, 02:53 PM
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Originally Posted by Bird-Dog 250 View Post
I really like the way it sits. I'd like to get my front up. Not quite sure how to do it without sacrificing the ride I've already got with adding a leaf. There must be a taller spring that has a same as stock ride.
If your F-250 still has the TTB, just swapping a solid axle in will lift it about 2 - 3" (you need to switch to F-350 springs with the solid axle, F-250 springs are stiffer than F-350 springs due to the TTB giving the tires leverage against the springs). A solid axle swap and a reverse shackle kit will raise it about 5".

If you want to keep the TTB and lift it you probably need to get a lift kit. Only springs without swing arm drop brackets will screw up your steering geometry.
 
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Old 01-23-2016, 02:56 PM
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I just realized Bird-Dog has a F250. RSK will not work. Sorry for the misinformation.
 
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Old 01-25-2016, 04:39 PM
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Originally Posted by BiGGreen350 View Post
heres my 97 f350 460 zf5

pmf 2.25 with u codes in front

c codes in rear with 5 inch superduty readylift block.

on 315/75/r16






Big Green that is a great looking ride. I appreciate your response, I would also appreciate you sending me that front bumper
Who makes it?

Brad,
I plan on running 315 70 17. I was asking if the U code springs provided additional lift over the advertised 2.25 from the RSK.
 
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Old 01-25-2016, 04:44 PM
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And here's a pic of the truck. My daughter named it Boomer cause when we hit a bump it goes BOOM and everyone flies in the air
 
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