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Old 12-20-2008, 04:42 PM   #1
ericpost
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56" SPRINGS, Which end if the front?

Just got a set of 56" springs and DIY shackle flips for the rear of my '72. I noticed that the spring eye is bigger on one side than the other and the distance from the pin to the eye is different as well....

So my question is which end of the spring is the front? The longer distance from pin to eye or the shorter from pin to eye?
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Old 12-20-2008, 05:34 PM   #2
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Re: 56" SPRINGS, Which end if the front?

Whichever works best for your wheelbase and tire size

I generally put the longer side to the front.
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Old 12-20-2008, 06:00 PM   #3
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Re: 56" SPRINGS, Which end if the front?

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Originally Posted by ericpost View Post

So my question is which end of the spring is the front? The longer distance from pin to eye or the shorter from pin to eye?
The shorter side to the front. Should be something like 26" from the center pin to the front eye
and 30" from the center pin to rear eye.
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Old 12-20-2008, 06:03 PM   #4
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Re: 56" SPRINGS, Which end if the front?

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Originally Posted by desertrat View Post
The shorter side to the front. Should be something like 26" from the center pin to the front eye
and 30" from the center pin to rear eye.
He is right, unless you're using a 35" or larger tire... which then hits the front of the wheel well.

(why I said to put the long end in front)

Last edited by FormerMember; 12-20-2008 at 06:05 PM.
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Old 12-21-2008, 09:40 PM   #5
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Re: 56" SPRINGS, Which end if the front?

Running 38.5's on the street and 42's in the muck. Gonna trim the fenders a bit anyway and I don't care if I nibble the front or the rear. The longer wheelbase option sounds good. Just wasn't sure if switching would bogger up spring geometry
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72 GMC Jimmy, 350, sm465 np205 (getting a face lift)
64 Nova SS, 327 SC & gassed, TH350. (blowed it up)
84 HD FX frame,80 FL tins, evo with 85hp/90tq (wifes bike)
96 HD FatBoy evo with 102hp/100tq (mine!)
KEEP NOTHING STOCK!
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Old 12-22-2008, 02:05 PM   #6
Tony@AirRideTech
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Re: 56" SPRINGS, Which end if the front?

Shorter towards the front.... that is also so you can maintain your sway bar. That spring pack probably has a built in shim to correct pinion angle that need to be heading the right way.
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Old 12-22-2008, 03:03 PM   #7
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Re: 56" SPRINGS, Which end if the front?

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Originally Posted by Tony@AirRideTech View Post
Shorter towards the front.... that is also so you can maintain your sway bar. That spring pack probably has a built in shim to correct pinion angle that need to be heading the right way.
Sway bar?

(This is the rear of his truck).

Shim can be flipped around.
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Old 12-22-2008, 04:27 PM   #8
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Re: 56" SPRINGS, Which end if the front?

Running Tuff Country EZ rides. They have a helper spring which will spin around but it doesn't look to have and angle to it. Just got in from the barn and have one side in with the longer end front, Looks like the pin is dead nut center of the wheel well unloaded. I'm sure it will set back once compressed, I'm guessing 1-2 inches.
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72 GMC Jimmy, 350, sm465 np205 (getting a face lift)
64 Nova SS, 327 SC & gassed, TH350. (blowed it up)
84 HD FX frame,80 FL tins, evo with 85hp/90tq (wifes bike)
96 HD FatBoy evo with 102hp/100tq (mine!)
KEEP NOTHING STOCK!
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