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Leaf spring slider question. #774613 08/15/10 10:50 PM 08/15/10 10:50 PM
Joined: Aug 2003 Posts: 4,408 Madison Wi NTOLERANCE OP master
NTOLERANCE OP master Joined: Aug 2003 Posts: 4,408 Madison Wi	How well do rear leaf spring sliders work in a drag application? I see them on some guys cars but many still run the oem stlye shackles. Seems to me that the sliders would allow for better rear tire planting when the sliders reached their max forward position. Got any real world experience? I am getting ready to install my springs, and I am thinking about going with sliders. Seems like an easier install than the shakles in the relocation kit. I've got a 65 Coronet, 383, 4 speed, 4.10 Dana, minitubbed, springs on frame. My estimate is its a 13 sec car when completed. I used to care but....... things have changed

Re: Leaf spring slider question. [Re: NTOLERANCE] #774614 08/15/10 10:55 PM 08/15/10 10:55 PM
Joined: Feb 2009 Posts: 1,532 off the grid 340B5 pro stock
340B5 pro stock Joined: Feb 2009 Posts: 1,532 off the grid	I like mine. Less separation in rear and more stability at the other end. I've done 1.62 60' w/ them. Yeah, it's got a smallblock.

Re: Leaf spring slider question. [Re: 340B5] #774615 08/15/10 10:56 PM 08/15/10 10:56 PM
Joined: Oct 2006 Posts: 4,590 Indy J joshking440 Lunch is on me!
joshking440 Lunch is on me! J Joined: Oct 2006 Posts: 4,590 Indy	My car makes 1300 hp and it has them.... they ride nice on the street as well

Re: Leaf spring slider question. [Re: joshking440] #774616 08/16/10 01:10 PM 08/16/10 01:10 PM
Joined: May 2008 Posts: 1,238 North Cackilacky S sdaurity pro stock
sdaurity pro stock S Joined: May 2008 Posts: 1,238 North Cackilacky	When I put them on and got rid of the shackles the car didn't pick up any in the 60' but is more consistent now. It was all over the place with the shackles as far as 60' time. This is running low 1.30 60's One day I will have something cool here.

Re: Leaf spring slider question. [Re: sdaurity] #774617 08/16/10 05:11 PM 08/16/10 05:11 PM
Joined: Aug 2003 Posts: 4,408 Madison Wi NTOLERANCE OP master
NTOLERANCE OP master Joined: Aug 2003 Posts: 4,408 Madison Wi	Good info guys. Thanks for the replies. HOw did you weld them to the frame? They seem wider than the mopar rear frame rails. I used to care but....... things have changed

Re: Leaf spring slider question. [Re: NTOLERANCE] #774618 08/16/10 05:20 PM 08/16/10 05:20 PM
Joined: Jun 2003 Posts: 52,972 Romeo MI MR_P_BODY Master
MR_P_BODY Master Joined: Jun 2003 Posts: 52,972 Romeo MI	Quote: Good info guys. Thanks for the replies. HOw did you weld them to the frame? They seem wider than the mopar rear frame rails. When I've put them on I just welded them on top of the slider bracket to the rail... no big deal(make sure the rails are clean metal) and square to the spring

Re: Leaf spring slider question. [Re: MR_P_BODY] #774619 08/16/10 07:06 PM 08/16/10 07:06 PM
Joined: Aug 2003 Posts: 4,408 Madison Wi NTOLERANCE OP master
NTOLERANCE OP master Joined: Aug 2003 Posts: 4,408 Madison Wi	How far fore aft? LEt the springs hang and mount them with the slider all the way forward? I used to care but....... things have changed

Re: Leaf spring slider question. [Re: NTOLERANCE] #774620 08/16/10 07:49 PM 08/16/10 07:49 PM
Joined: Jul 2003 Posts: 4,087 The Wet Coast, Canada megajoltman master
megajoltman master Joined: Jul 2003 Posts: 4,087 The Wet Coast, Canada	So which is better the Afco or Speedway heavy duty roller bearings 1969 Dart 383/727/D60 CTD Ram 4x4 Mega Cab Procharged 350Z

Re: Leaf spring slider question. [Re: NTOLERANCE] #774621 08/17/10 07:40 AM 08/17/10 07:40 AM
Joined: Mar 2006 Posts: 5,067 Orlando Florida blown572dart master
blown572dart master Joined: Mar 2006 Posts: 5,067 Orlando Florida	Quote: How far fore aft? LEt the springs hang and mount them with the slider all the way forward? I would like to know also

Re: Leaf spring slider question. [Re: NTOLERANCE] #774622 08/17/10 09:20 AM 08/17/10 09:20 AM
Joined: Jun 2003 Posts: 52,972 Romeo MI MR_P_BODY Master
MR_P_BODY Master Joined: Jun 2003 Posts: 52,972 Romeo MI	Quote: How far fore aft? LEt the springs hang and mount them with the slider all the way forward? Let the diff hang and set them so they just clear the front(dont want any upsets on the chassis)

Re: Leaf spring slider question. [Re: MR_P_BODY] #774623 08/17/10 10:33 AM 08/17/10 10:33 AM
Joined: Oct 2006 Posts: 4,590 Indy J joshking440 Lunch is on me!
joshking440 Lunch is on me! J Joined: Oct 2006 Posts: 4,590 Indy	On my car, at ride height with weight in the car, the spring is much closer to the rear of the slider. I dont know how much seperation Im going to have on the launch, but I wanted to be safe...

Re: Leaf spring slider question. [Re: joshking440] #774624 08/17/10 11:19 AM 08/17/10 11:19 AM
Joined: Oct 2003 Posts: 842 Baltimore,MD Bill_LBSR super stock
Bill_LBSR super stock Joined: Oct 2003 Posts: 842 Baltimore,MD	IIRC AFCO suggests the leaf spring eye be 3/4 of the way toward the back of the slider box. LBSR

Re: Leaf spring slider question. [Re: MR_P_BODY] #774625 06/20/12 11:47 PM 06/20/12 11:47 PM
Joined: Apr 2009 Posts: 3,433 Toronto M mshred master
mshred master M Joined: Apr 2009 Posts: 3,433 Toronto	Quote: Quote: How far fore aft? LEt the springs hang and mount them with the slider all the way forward? Let the diff hang and set them so they just clear the front(dont want any upsets on the chassis) Hey guys, I know this is a thread brought back from the dead, but I needed some clarification on this...Mr. P., you are letting the diff hang with the slider installed on the rear spring eye and placed up to the frame? And then setting them just a hair back from the front of the slider and welding them there?

Re: Leaf spring slider question. [Re: mshred] #774626 06/21/12 12:23 AM 06/21/12 12:23 AM
Joined: Jun 2003 Posts: 52,972 Romeo MI MR_P_BODY Master
MR_P_BODY Master Joined: Jun 2003 Posts: 52,972 Romeo MI	Quote: Quote: Quote: How far fore aft? LEt the springs hang and mount them with the slider all the way forward? Let the diff hang and set them so they just clear the front(dont want any upsets on the chassis) Hey guys, I know this is a thread brought back from the dead, but I needed some clarification on this...Mr. P., you are letting the diff hang with the slider installed on the rear spring eye and placed up to the frame? And then setting them just a hair back from the front of the slider and welding them there? Just tack them in place then let the rear end hang to see where the bolt is on the slider... you dont want them hitting either end... once they are located right them burn them on EDIT the first time I tacked them a bit forward so I could measure how far I had to move them rearward... if yo tack them on to far rearward the bolt will hit the front and you cant get a measurement on how far to move them Last edited by MR_P_BODY; 06/21/12 12:36 AM.

Re: Leaf spring slider question. [Re: MR_P_BODY] #774627 06/21/12 04:22 PM 06/21/12 04:22 PM
Joined: Apr 2009 Posts: 3,433 Toronto M mshred master
mshred master M Joined: Apr 2009 Posts: 3,433 Toronto	Quote: Quote: Quote: Quote: How far fore aft? LEt the springs hang and mount them with the slider all the way forward? Let the diff hang and set them so they just clear the front(dont want any upsets on the chassis) Hey guys, I know this is a thread brought back from the dead, but I needed some clarification on this...Mr. P., you are letting the diff hang with the slider installed on the rear spring eye and placed up to the frame? And then setting them just a hair back from the front of the slider and welding them there? Just tack them in place then let the rear end hang to see where the bolt is on the slider... you dont want them hitting either end... once they are located right them burn them on EDIT the first time I tacked them a bit forward so I could measure how far I had to move them rearward... if yo tack them on to far rearward the bolt will hit the front and you cant get a measurement on how far to move them Thanks for the info Mr. P. Was just trying to get an idea of roughly where to tack them in the first place with nothing to go by

Re: Leaf spring slider question. [Re: mshred] #774628 06/21/12 08:04 PM 06/21/12 08:04 PM
Joined: Jun 2003 Posts: 52,972 Romeo MI MR_P_BODY Master
MR_P_BODY Master Joined: Jun 2003 Posts: 52,972 Romeo MI	Thanks for the info Mr. P. Was just trying to get an idea of roughly where to tack them in the first place with nothing to go by If you let the diff hang use a square off the frame rail to the center of the spring eyelet and that will give you a starting point

Re: Leaf spring slider question. [Re: MR_P_BODY] #774629 06/21/12 09:58 PM 06/21/12 09:58 PM
Joined: Dec 2009 Posts: 161 SE Iowa J Jonnyj00 member
Jonnyj00 member J Joined: Dec 2009 Posts: 161 SE Iowa	I just installed the Speedway brand on a 71 demon and looked at this info when making my decision. http://www.afcoracing.com/tech_pages/leaf.shtml I installed mine 3/4 from the rear at race weight. With fuel and so on.I beleive I got that info through moparts. Hope this helps

Re: Leaf spring slider question. [Re: Jonnyj00] #774630 06/21/12 11:25 PM 06/21/12 11:25 PM
Joined: Oct 2011 Posts: 3,036 bean town ....Ca W WHITEDART master
WHITEDART master W Joined: Oct 2011 Posts: 3,036 bean town ....Ca	i would weld a plate to the car and drill and tap it and make sims that u can put between the plate and the slider that way you can use them to sift weight around on the scales.i bet a 1/4 " sim on one side or the other can sift a hole bunch of weight may be some one can explane it better im not that smart In the 8s N/A.with Brett miller W8's 5.07 at 133 at 2700lb

Re: Leaf spring slider question. [Re: MR_P_BODY] #774631 06/22/12 01:13 AM 06/22/12 01:13 AM
Joined: Apr 2009 Posts: 3,433 Toronto M mshred master
mshred master M Joined: Apr 2009 Posts: 3,433 Toronto	Quote: Thanks for the info Mr. P. Was just trying to get an idea of roughly where to tack them in the first place with nothing to go by If you let the diff hang use a square off the frame rail to the center of the spring eyelet and that will give you a starting point First off, Happy Birthday Mike! All the best to you man! I got the sliders installed...let the diff hang, got an idea where they needed to be and went from there making sure I had enough extension and compression with them where it wasn't bottoming out. The 3/4" that everyone mentions, is that the gap that you are measuring, or from the back of the slider gap to the center of the spring bolt? Also, I only ended up welding the sliders on the front and back as the sides are quite a bit wider than the frame...do you guys think this is strong enough???

Re: Leaf spring slider question. [Re: mshred] #774632 06/22/12 06:29 AM 06/22/12 06:29 AM
Joined: Jun 2003 Posts: 52,972 Romeo MI MR_P_BODY Master
MR_P_BODY Master Joined: Jun 2003 Posts: 52,972 Romeo MI	First off, Happy Birthday Mike! All the best to you man! I got the sliders installed...let the diff hang, got an idea where they needed to be and went from there making sure I had enough extension and compression with them where it wasn't bottoming out. The 3/4" that everyone mentions, is that the gap that you are measuring, or from the back of the slider gap to the center of the spring bolt? Also, I only ended up welding the sliders on the front and back as the sides are quite a bit wider than the frame...do you guys think this is strong enough??? Thanks... I put a piece of metal between it and the frame... but that part isnt carrying that much load so it should be fine

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