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BENEFITS OF A CORRECTED REAR SHACKLE HANGER???

Posted By: Labratt

BENEFITS OF A CORRECTED REAR SHACKLE HANGER??? - 07/27/11 02:12 PM

Can I get some "Real World" opinions...from the actual experience of correcting a "neautral" angle(straight up and down)to a "corrected" angle of 30 degrees forward(top of shackle)? I'm VERY curious as to the difference it made in the 60' times! I am talking about Super Stock springs. My angle is at this position because I'm using the 002/003 A-Body springs on my '69' GTX....and apparently the rear attaching point has to be moved forward 1-1/1/2" Thanks in advance for your information! Randy B.

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Posted By: STEFF

Re: BENEFITS OF A CORRECTED REAR SHACKLE HANGER??? - 07/27/11 02:47 PM

You will pick up .50 sec. in your 60'.......is that what you want to hear? Sorry Randy, but you already know that it should improve your 60' issues about a tenth or so and it seems all the info you received, so far isn't good enuff. Get the car fixed go run it. Its the best way to learn.
Posted By: roadhazard

Re: BENEFITS OF A CORRECTED REAR SHACKLE HANGER??? - 07/27/11 02:49 PM

Randy, I was reading your other thread last night and have to agree with those that suggested correcting your rear shackle angle (MrPBody & Jake68 off the top of my head).

As Jake68 mentioned you could even use some spring sliders to lower the car a bit if that's what you desire but I'd keep it simple and use what you have. Just make and or modify your brackets to get the desired ride height and an agressive angle so the rear segment does not try to pull the rear shackle over center as I believe this is an issue with your current set up.

My ugly set up that dead hooks to high 1.3's to 1.40's. I beilive it's about a 60* angle FWIW

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Posted By: 2FASTCORONET

Re: BENEFITS OF A CORRECTED REAR SHACKLE HANGER??? - 07/27/11 02:52 PM

Randy,

At this point I'm not sure what my car will do yet, because I'm trying for that one ten second slip too. I can tell you my shackles in the stock position are similar to yours. I've added a 1/2" aluminum plates in front of the front hanger to get about 45 degrees. The shackle position will allow the car to rise a lot more(push down), so you have to control it with your shocks. Also, if you need a set of B body springs to try. I have both xhd and ss for b bodies. I got a great deal on some tri city launchers and have them on now. I really like them a lot as they lowered the car in the rear. I have 5" of rise in the front end and added the calvert shocks. What a difference. I've really concentrated on gettin 5" of rise in the front end. Big difference even on the street! I'm looking forward to trying it out at the strip. Dennis
Posted By: Todd

Re: BENEFITS OF A CORRECTED REAR SHACKLE HANGER??? - 07/27/11 03:01 PM

I had a problem with the shackle hitting on the frame. Instead of making a new mount and trying to make the shackle work I installed some sliders. The suspension moves alot easier.

Attached picture 6749057-2011-06-1116.02.11(Large).jpg
Posted By: Labratt

Re: BENEFITS OF A CORRECTED REAR SHACKLE HANGER??? - 07/27/11 03:11 PM

Steff...I hear ya'! Believe me,I trust both Mike R... and Jake with their advice! I would be more than happy with a .1 improvement in my 60's! On a well-prepped track,that would translate to 1.42-1.46's! Thanks for your opinion! Greg,the angle on your shackles obviously works VERRRY well! Dennis,appreciate your offer,but I'll just stick with the ole' 002/003 springs...and get the shackle angle resolved! If that knocks off a tenth,like Steff suggests....I'll be a "Happy Camper"! Thanks,Guys!
Posted By: gregsdart

Re: BENEFITS OF A CORRECTED REAR SHACKLE HANGER??? - 07/27/11 03:12 PM

Quote:

I had a problem with the shackle hitting on the frame. Instead of making a new mount and trying to make the shackle work I installed some sliders. The suspension moves alot easier.


Great solution. How fast is the car? 60 ft?
Posted By: Labratt

Re: BENEFITS OF A CORRECTED REAR SHACKLE HANGER??? - 07/27/11 03:15 PM

Todd...NICE SET-UP! I've never seen sliders installed before this! How do they work for you?
Posted By: JAKE68

Re: BENEFITS OF A CORRECTED REAR SHACKLE HANGER??? - 07/27/11 03:24 PM

Quote:

Can I get some "Real World" opinions...from the actual experience of correcting a "neautral" angle(straight up and down)to a "corrected" angle of 30 degrees forward(top of shackle)? I'm VERY curious as to the difference it made in the 60' times! I am talking about Super Stock springs. My angle is at this position because I'm using the 002/003 A-Body springs on my '69' GTX....and apparently the rear attaching point has to be moved forward 1-1/1/2" Thanks in advance for your information! Randy B.


There is no REAL WORD opinions that can be given. A paqckage has to totaly work with everything to be right. It is given that your package is not right. Fix it and you will see REAL WORLD if it worked or not. But it needs fixing
Posted By: Todd

Re: BENEFITS OF A CORRECTED REAR SHACKLE HANGER??? - 07/27/11 03:41 PM

Quote:

Todd...NICE SET-UP! I've never seen sliders installed before this! How do they work for you?



Thanks! I havnt run the car before with the shakles but only once with the sliders and was having engine problems so the 60' really sucked. other than that I like them. Got them from speedway motors. They have 2 kinds ones with the bearings and ones without. The pic is with the suspension hanging all the way extended.

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Posted By: Mr340

Re: BENEFITS OF A CORRECTED REAR SHACKLE HANGER??? - 07/27/11 04:48 PM

Randy,
Get that Shackle mount moved and bring it out to Ubly this Saturday.
Posted By: 2734bbl

Re: BENEFITS OF A CORRECTED REAR SHACKLE HANGER??? - 07/27/11 05:07 PM

Quote:

I had a problem with the shackle hitting on the frame. Instead of making a new mount and trying to make the shackle work I installed some sliders. The suspension moves alot easier.



My shackles hit also and the car rides really stiff. I like the look of the sliders.
Posted By: MR_P_BODY

Re: BENEFITS OF A CORRECTED REAR SHACKLE HANGER??? - 07/27/11 05:17 PM

Quote:

Quote:

I had a problem with the shackle hitting on the frame. Instead of making a new mount and trying to make the shackle work I installed some sliders. The suspension moves alot easier.



My shackles hit also and the car rides really stiff. I like the look of the sliders.



They must be hitting on the back(rear) side of the
shackle... if they hit then the spring just went solid
and it rides stiff
Posted By: 2734bbl

Re: BENEFITS OF A CORRECTED REAR SHACKLE HANGER??? - 07/27/11 05:28 PM

Quote:

Quote:

Quote:

I had a problem with the shackle hitting on the frame. Instead of making a new mount and trying to make the shackle work I installed some sliders. The suspension moves alot easier.



My shackles hit also and the car rides really stiff. I like the look of the sliders.



They must be hitting on the back(rear) side of the
shackle... if they hit then the spring just went solid
and it rides stiff





Correct. Hooks great but rides like a buckboard.
Posted By: Labratt

Re: BENEFITS OF A CORRECTED REAR SHACKLE HANGER??? - 07/27/11 06:01 PM

Hey,Gary! No can do!...I've got a lot of "stuff" to sort..and clean up for a garage/pole barn sale on Sunday,Aug.7th! Never realized how much a person could accumulate in 10 yrs.!!! Have fun!...gonna be another HOT one! I'm waiting for those 70 degree temps to roll around again! Keep me posted!
Posted By: Sixpak

Re: BENEFITS OF A CORRECTED REAR SHACKLE HANGER??? - 07/27/11 06:54 PM

There's a low buck solution to this issue. Make a 2" or so spacer that goes between the shackle mount on the body and the top shackle bracket. Some 2 x 2 or 2 x 3 steel tubing, a sawzall, a few drill holes and you're in business. Here's something I made years ago. Crude but effective, and cheap. By the way, the picture was taken with the car on jackstands under the body, not the suspension. Resting on its wheels, the shackle pointed at 4 o clock. And today I would not use the Mr Gasket long shackles - I'd use stock ones.

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Posted By: Sixpak

Re: BENEFITS OF A CORRECTED REAR SHACKLE HANGER??? - 07/27/11 07:01 PM

Quote:

I had a problem with the shackle hitting on the frame. Instead of making a new mount and trying to make the shackle work I installed some sliders. The suspension moves alot easier.


Is the car weight off the suspension in your pic? It looks like all the forward travel in the slider is used up. I would think that you'd need the rear leaf eye bolt, at rest, to be towards the back, and as the chassis rises the rear spring bolt would want to move forward.
Posted By: Todd

Re: BENEFITS OF A CORRECTED REAR SHACKLE HANGER??? - 07/27/11 07:18 PM

Quote:

Quote:

I had a problem with the shackle hitting on the frame. Instead of making a new mount and trying to make the shackle work I installed some sliders. The suspension moves alot easier.


Is the car weight off the suspension in your pic? It looks like all the forward travel in the slider is used up. I would think that you'd need the rear leaf eye bolt, at rest, to be towards the back, and as the chassis rises the rear spring bolt would want to move forward.




Yes its with the suspension hanging. With it on the ground the spring bolt is an inch from the rear of the slot. The springs are almost level at ride height so their not gonna bottom out on the rear side.
Posted By: roadhazard

Re: BENEFITS OF A CORRECTED REAR SHACKLE HANGER??? - 07/27/11 08:04 PM

Todd you have a SWEET looking ride

With the tires off the ground do you still have an inch or so for the slider to still move forward when the springs arch?

Randy I'd also follow the advise to use the stock rear shackle over the aftermarket ones. Also when you do get everything all set up don't forget to check rear shock length with the suspension hanging

Also what's the wheelbase on your car Randy?
Posted By: Todd

Re: BENEFITS OF A CORRECTED REAR SHACKLE HANGER??? - 07/27/11 08:28 PM

Quote:

Todd you have a SWEET looking ride

With the tires off the ground do you still have an inch or so for the slider to still move forward when the springs arch?

Randy I'd also follow the advise to use the stock rear shackle over the aftermarket ones. Also when you do get everything all set up don't forget to check rear shock length with the suspension hanging

Also what's the wheelbase on your car Randy?




With the tires off the ground the slider is all the way forward. It will never get that far cuz its got ladder bars and floaters on the axle.
Posted By: roadhazard

Re: BENEFITS OF A CORRECTED REAR SHACKLE HANGER??? - 07/27/11 08:37 PM

Thanks
I forgot about adding the ladder bars into the equation

I'd assume when just using leafs you'd want some more forward movement, correct?

Sorry to hijack Randy
I'll buy you a when I see you @ Norwalk
Posted By: Todd

Re: BENEFITS OF A CORRECTED REAR SHACKLE HANGER??? - 07/27/11 08:53 PM

Quote:

Thanks
I forgot about adding the ladder bars into the equation

I'd assume when just using leafs you'd want some more forward movement, correct?

Sorry to hijack Randy
I'll buy you a when I see you @ Norwalk




When the shocks are on, there is no way for the slider to bottom out in any direction. Works very smooth. Way better than the shackle mess.
Posted By: actionange

Re: BENEFITS OF A CORRECTED REAR SHACKLE HANGER??? - 07/27/11 10:21 PM

Geez...by now you could've had the Caltracs installed and been out doing this... LOL
Just saying

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Posted By: Labratt

Re: BENEFITS OF A CORRECTED REAR SHACKLE HANGER??? - 07/28/11 02:52 AM

Stopped by Jake's Automotive today,and talked to Gary. He's going to re-mount my rear shackles..and check my pinion angle. Can't believe how crazy-busy they are over there! His parking lot was filled to capacity!...that's a GOOD thing! If this does knock off .1...I'll be VERRRY happy! Thanks for ALL your help..and pictures,guys! That's what makes Moparts members the BEST!!!
Posted By: dragram440

Re: BENEFITS OF A CORRECTED REAR SHACKLE HANGER??? - 07/28/11 02:37 PM

This in mine! I thought they were suppose to be straight up. I also have a hole in front of the one I am using. Would I be better off in the front hole?


Uploaded with ImageShack.us
Posted By: Labratt

Re: BENEFITS OF A CORRECTED REAR SHACKLE HANGER??? - 07/28/11 02:43 PM

Matt..from what the "experts"(Jake & Mr. P-Body)are telling me...the shackle should be at least 30* angle for the spring to work correctly! Not sure if more angle is better or not? Might want to use that existing hole! I would!
Posted By: roadhazard

Re: BENEFITS OF A CORRECTED REAR SHACKLE HANGER??? - 07/28/11 02:50 PM

Quote:

This in mine! I thought they were suppose to be straight up. I also have a hole in front of the one I am using. Would I be better off in the front hole?


Uploaded with ImageShack.us




IMO......YES, YES, YES
Posted By: MR_P_BODY

Re: BENEFITS OF A CORRECTED REAR SHACKLE HANGER??? - 07/28/11 03:13 PM

Quote:

This in mine! I thought they were suppose to be straight up. I also have a hole in front of the one I am using. Would I be better off in the front hole?


Uploaded with ImageShack.us



Yes it should have the top leaning forward... if you
were to lift the body you shackle will run out of
travel vs if the top was forward... also if its too
far forward it will bottom out on the rear when the
spring goes into compression/jounce... so more isnt
necessarily better
Posted By: Thumperdart

Re: BENEFITS OF A CORRECTED REAR SHACKLE HANGER??? - 07/28/11 04:24 PM

Quote:

Can I get some "Real World" opinions...from the actual experience of correcting a "neautral" angle(straight up and down)to a "corrected" angle of 30 degrees forward(top of shackle)? I'm VERY curious as to the difference it made in the 60' times! I am talking about Super Stock springs. My angle is at this position because I'm using the 002/003 A-Body springs on my '69' GTX....and apparently the rear attaching point has to be moved forward 1-1/1/2" Thanks in advance for your information! Randy B.

If you look REAL close to my sig photo you`ll see AIR and a 1.36 60 ft. THAT`S the real benefit from proper leaf spring rotation/movement. Fix the little things and big things will come.
Posted By: Labratt

Re: BENEFITS OF A CORRECTED REAR SHACKLE HANGER??? - 07/28/11 10:07 PM

Dom..1.36 60's for a STREET CAR is Awesome! Like Steff,yourself,and a few others have suggested,if I correct the suspension..and tweak a few things...I just might be closer to that 10.999 time slip! We'll see when the weather cools off!

Attached picture 6751428-GTX---NEWSTANCE---LOWERED002(Small).jpg
Posted By: Thumperdart

Re: BENEFITS OF A CORRECTED REAR SHACKLE HANGER??? - 07/28/11 11:12 PM

Exactamundo................. When I was teaching Cab about racing years ago , I kept preaching about finessing EVERY part of the car from bumper to bumper and look at him today! Your car`s bad a$$ to me and runs hard so keep at it.
Posted By: Cab_Burge

Re: BENEFITS OF A CORRECTED REAR SHACKLE HANGER??? - 07/29/11 02:07 AM

Quote:

Exactamundo................. When I was teaching Cab about racing years ago , I kept preaching about finessing EVERY part of the car from bumper to bumper and look at him today! Your car`s bad a$$ to me and runs hard so keep at it.

Posted By: Thumperdart

Re: BENEFITS OF A CORRECTED REAR SHACKLE HANGER??? - 07/29/11 02:24 AM

Quote:

Quote:

Exactamundo................. When I was teaching Cab about racing years ago , I kept preaching about finessing EVERY part of the car from bumper to bumper and look at him today! Your car`s bad a$$ to me and runs hard so keep at it.



Come on Cab,(joke) just jerkin your chain and you`ve taught me loads of good stuff and are good friend.
Posted By: Labratt

Re: BENEFITS OF A CORRECTED REAR SHACKLE HANGER??? - 07/29/11 04:37 AM

Thanks,Dom! That ole' Cab sure took what ya taught him and put it to good use! He's a "Smart Cookie" as well as yourself!
Posted By: Thumperdart

Re: BENEFITS OF A CORRECTED REAR SHACKLE HANGER??? - 07/29/11 06:09 AM

Quote:

Thanks,Dom! That ole' Cab sure took what ya taught him and put it to good use! He's a "Smart Cookie" as well as yourself!

Funny stuff............. Good luck with your car and the cooler weather.
Posted By: Labratt

Re: BENEFITS OF A CORRECTED REAR SHACKLE HANGER??? - 07/29/11 02:26 PM

THANK YOU!....and good luck with that "big-tired" Nova!
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