Author Topic: front leaf springs to short? need help (Read 2491 times)

tom85 · « **on:** May 30, 2013, 07:35:25 PM »

I started the SAS on my 89 pickup and it looks like the leaf springs are to short. To get the shackles at a good angle it moves the leaf springs back and it puts the crossmember in the wrong spot

junya92toy · « **Reply #1 on:** May 30, 2013, 07:39:35 PM »

get boomerange or banana shackles

88sasturbotoy · « **Reply #2 on:** May 30, 2013, 09:00:04 PM »

when i did my swap i hung my front hanger 3/4 of and inch forwad. without the weight of the truck sitting on the axle my shackles were hanging 30 to 40 degrees forward. once you put the weight of the truck on the springs they should bend out and push the shackles back into a good position....also what kind of springs do u got did you get? a kit? what year of truck?...if your trying to use an older spring like an 84 or 85 dont hold me to this but im pretty sure they 42 inches hole to hole any anything you buy today is 48 from hole to hole pretty sure but not positive so if im wrong correct me....id measure what your springs are from hole to hole put some more measurement info up might be able to help you more then

junya92toy · « **Reply #3 on:** May 30, 2013, 09:34:22 PM »

But when you extentt or drop one side, it can invert the shackle

NorCalPR · « **Reply #4 on:** May 30, 2013, 09:37:38 PM »

Boomerang or banana shackles don't do anything but clear mounts. The lead spring zoesnt care if it's a straight peice of metal, or a z connecting it. All that matters is point to point in a straight line

junya92toy · « **Reply #5 on:** May 30, 2013, 09:38:39 PM »

Hum, they can prevent inverted shackles too, and they are more then just about clearing mounts

NorCalPR · « **Reply #6 on:** May 30, 2013, 10:00:54 PM »

Nope....... Shackles work the same exact way, irregardless of shape. Think about it

NorCalPR · « **Reply #7 on:** May 30, 2013, 10:12:28 PM »

Here's an idea:

Providing there's no clearance issue, is it possible to run a boomerang shackle on one side of the leaf, and on the other side of the same leaf, just a flat plate?

If so what will happen

88sasturbotoy · « **Reply #8 on:** May 30, 2013, 11:12:59 PM »

to be honest ive never had an inverted shackle and when my rig is fully flexed my shackle hangs forward when the spring compreses it always come back to home....like i said before get some measurements up its easier to troubleshoot when we know where everything sits

88sasturbotoy · « **Reply #9 on:** May 30, 2013, 11:20:50 PM »

also dont leave your motor mount all chopped in half like that get some plate and make sure its stout

tom85 · « **Reply #10 on:** May 31, 2013, 03:11:10 AM »

I planed on fixing the mount when I got the welder out. When I had this lift on my other truck I had the crossmember where it should and my shackles were 90° to the frame but my steering didn't look right

dropzone · « **Reply #11 on:** May 31, 2013, 03:41:15 AM »

Quote from: NorCalPR on May 30, 2013, 10:12:28 PM

Here's an idea:

Providing there's no clearance issue, is it possible to run a boomerang shackle on one side of the leaf, and on the other side of the same leaf, just a flat plate?

If so what will happen

how would you get the two opposing plates even close to being able to put the bolt through?

OP: what springs are those? they look like short no name superlift or something 79-85 springs..

x2 on fixing that motor mount

tom85 · « **Reply #12 on:** May 31, 2013, 03:49:35 AM »

I believe they are all pro offroad. I'm going to call them today.

tom85 · « **Reply #13 on:** May 31, 2013, 03:51:30 AM »

I had them on my 85 but I think they were short on that but I just went with it

88sasturbotoy · « **Reply #14 on:** May 31, 2013, 08:37:43 AM »

measure the springs from hole to hole tell us what they are if there 42 inch springs thats your problem if they came off your 85 then therenot the correct springs and your goin to need 48 inch hole to hole springs

tom85 · « **Reply #15 on:** May 31, 2013, 08:45:18 AM »

OK thanks I'll measure when I get home

tom85 · « **Reply #16 on:** May 31, 2013, 10:02:48 AM »

Yea they were 44 inches I just got off the phone with all pro to order new ones

NorCalPR · « **Reply #17 on:** May 31, 2013, 10:35:32 AM »

Quote from: ocdropzone on May 31, 2013, 03:41:15 AM

how would you get the two opposing plates even close to being able to put the bolt through?

OP: what springs are those? they look like short no name superlift or something 79-85 springs..

x2 on fixing that motor mount

If both the center hole distance is the same (like 6") the bolt will go through and the shackle will work the same as any shackle.

It doesn't matter the shape of the shackle. The spring is in a fixed location set by the hanger. The shackle just allows the sprin to extend. Doesn't matter if it's straight, a L, a z or a J, the shackle works the same

88sasturbotoy · « **Reply #18 on:** May 31, 2013, 03:24:10 PM »

cool yeah thats your problem yeah need to be longer....if you ordered 4 inch springs weld the hanger 3/4 of and inch forward if you got 3 inch springs weld it flush

tom85 · « **Reply #19 on:** May 31, 2013, 06:09:44 PM »

OK thanks

OOPS · « **Reply #20 on:** Jun 01, 2013, 08:04:05 PM »

How do you know you have a bad shackle angle? You do not have an engine in there, no weight up front. Put the engine and tranny back in, then see what it looks like.

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