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Lowering Links For Leaf Spring Suspension #541617 12/01/09 01:21 AM 12/01/09 01:21 AM
Joined: Dec 2007 Posts: 486 IL knyech1 OP mopar
knyech1 OP mopar Joined: Dec 2007 Posts: 486 IL	I was on here a long time ago and I seen someone come out with links that gave you the option of raising the rear 1", lowering the rear 1", or lowering the rear 2" on a leaf spring suspension. Are these still available and who makes them? knyech1- '71 Sassy Grass Demon 340/904. Pump gas, 1.61 60ft, 7.439 1/8 @ 95mph, 11.824 1/4 @ 111mph "Not too bad for a pump gas 340, full of used parts and hillbilly ported stock heads." - V.B. '03 2500 5.9L HO 6-spd on 35's. 395hp/755ft-lb at tires.

Re: Lowering Links For Leaf Spring Suspension [Re: knyech1] #541618 12/01/09 07:36 AM 12/01/09 07:36 AM
Joined: Mar 2009 Posts: 583 Raleigh, NC R rockerbob mopar
rockerbob mopar R Joined: Mar 2009 Posts: 583 Raleigh, NC	Here's a bump for ya 2005 Dakota 4X4 3.7 2004 Rumble Bee 5.7 1978 Diplomat 318 1969 Satellite 318 "bracket racer" 1966 Barracuda (in progress ) 1964 Dodge 330 (future race project) 1962 Belvedere (HUM????)

Re: Lowering Links For Leaf Spring Suspension [Re: rockerbob] #541619 12/01/09 07:46 AM 12/01/09 07:46 AM
Joined: Nov 2006 Posts: 637 Kokomo,IN StripeHOG mopar
StripeHOG mopar Joined: Nov 2006 Posts: 637 Kokomo,IN	they sell lowering blocks at auto zone Andrew Brough D372 1969 Dodge Dart GTS 1.43 60'best 6.82 1/8 98mph "the light came on and I ran out of talent"

Re: Lowering Links For Leaf Spring Suspension [Re: StripeHOG] #541620 12/01/09 09:36 AM 12/01/09 09:36 AM
Joined: May 2008 Posts: 902 Mopar Lane,Mississippi 6 67HEMI super stock
67HEMI super stock 6 Joined: May 2008 Posts: 902 Mopar Lane,Mississippi	AFCO sliders in place of the rear shackles is what I use. Depending on shackle length it will lower it at least an inch. '33 Plymouth 5 Window Coupe Blown Aluminum HEMI w/bolt ons (under construction) '69 Chrysler 300 Convertible 375 HP 440 '71 Plymouth Duster 360 W/EFI (Wife's Ride) '12 Ram MegaCab Dually 6.7 Cummins

Re: Lowering Links For Leaf Spring Suspension [Re: 67HEMI] #541621 12/01/09 10:33 AM 12/01/09 10:33 AM
Joined: Jan 2003 Posts: 3,031 Erda, UT 67Charger master
67Charger master Joined: Jan 2003 Posts: 3,031 Erda, UT	I think he is referring to the front hangers with multiple mount holes... ...and I can't remember where I saw them either. 11.33 @ 118.46 on motor 10.75 @ 125.35 w/ a little spray Now, high Speed Open Road Racing - Silver State Classic Challenge, Nevada Open Road Challenge, Big Bend Open Road Race Rocky Mountain Race Week 2020, 2022 2.0, Sick Week 2023

Re: Lowering Links For Leaf Spring Suspension [Re: 67Charger] #541622 12/01/09 11:19 AM 12/01/09 11:19 AM
Joined: Jul 2003 Posts: 4,085 The Wet Coast, Canada megajoltman master
megajoltman master Joined: Jul 2003 Posts: 4,085 The Wet Coast, Canada	http://www.firmfeel.com/leafhang_a.htm 1969 Dart 383/727/D60 CTD Ram 4x4 Mega Cab Procharged 350Z

Re: Lowering Links For Leaf Spring Suspension [Re: 67Charger] #541623 12/01/09 09:54 PM 12/01/09 09:54 PM
Joined: Dec 2007 Posts: 486 IL knyech1 OP mopar
knyech1 OP mopar Joined: Dec 2007 Posts: 486 IL	Quote: I think he is referring to the front hangers with multiple mount holes... ...and I can't remember where I saw them either. yes I am and the link above not sure that is them, I thought there were more holes than that but maybe not...

Re: Lowering Links For Leaf Spring Suspension [Re: knyech1] #541624 12/01/09 11:18 PM 12/01/09 11:18 PM
Joined: Jul 2003 Posts: 4,085 The Wet Coast, Canada megajoltman master
megajoltman master Joined: Jul 2003 Posts: 4,085 The Wet Coast, Canada	Quote: Quote: I think he is referring to the front hangers with multiple mount holes... ...and I can't remember where I saw them either. yes I am and the link above not sure that is them, I thought there were more holes than that but maybe not... I know I have seen one with 3 holes in it somewhere on the web can't seem find it 1969 Dart 383/727/D60 CTD Ram 4x4 Mega Cab Procharged 350Z

Re: Lowering Links For Leaf Spring Suspension [Re: megajoltman] #541625 12/02/09 12:05 AM 12/02/09 12:05 AM
Joined: Feb 2003 Posts: 1,730 Red Deer, Alberta B bill_greenwood top fuel
bill_greenwood top fuel B Joined: Feb 2003 Posts: 1,730 Red Deer, Alberta	When I built my car, I drilled an extra set of holes in the front spring box just for that purpose. My question is, would lowering the rear (generally speaking) have a tendency to help or hurt my launch? This will have the effect of giving my bottom 4-link bar a slight downward angle. Any thoughts?

Re: Lowering Links For Leaf Spring Suspension [Re: bill_greenwood] #541626 03/20/10 01:43 PM 03/20/10 01:43 PM
Joined: Dec 2007 Posts: 486 IL knyech1 OP mopar
knyech1 OP mopar Joined: Dec 2007 Posts: 486 IL	I wanna know too

Re: Lowering Links For Leaf Spring Suspension [Re: bill_greenwood] #541627 03/20/10 02:26 PM 03/20/10 02:26 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: When I built my car, I drilled an extra set of holes in the front spring box just for that purpose. My question is, would lowering the rear (generally speaking) have a tendency to help or hurt my launch? This will have the effect of giving my bottom 4-link bar a slight downward angle. Any thoughts? In theory it would be lowering the IC which normally gives you a shofter hit on the tire but increases the length of time it hits the tire EDIT with doing just the lowering holes on the front you really arent lowering the IC, your just lowering the body some(the front spring bolt is still in the same position as before) but you will have lowered the rear of the body which should have made it easier for the front to transfer the weight to the rear (the CG would by rights have been moved up slightly) Last edited by MR_P_BODY; 03/20/10 03:24 PM.

Re: Lowering Links For Leaf Spring Suspension [Re: MR_P_BODY] #541628 03/20/10 06:15 PM 03/20/10 06:15 PM
Joined: Jan 2006 Posts: 419 NY F F1Scamp mopar
F1Scamp mopar F Joined: Jan 2006 Posts: 419 NY	In theory it would be lowering the IC which normally gives you a shofter hit on the tire but increases the length of time it hits the tire EDIT with doing just the lowering holes on the front you really arent lowering the IC, your just lowering the body some(the front spring bolt is still in the same position as before) but you will have lowered the rear of the body which should have made it easier for the front to transfer the weight to the rear (the CG would by rights have been moved up slightly) Lowering the front spring eye bolt height would be lowering the IC. Also it will be raising the body of the car. You would have to bring the bolt above the factory bolt height to lower the body. Work In Progress- 71' Duster F.A.S.T.- 10.36@130 Smallblock Record Holder.

Re: Lowering Links For Leaf Spring Suspension [Re: F1Scamp] #541629 03/20/10 06:39 PM 03/20/10 06:39 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	Lowering the front spring eye bolt height would be lowering the IC. Also it will be raising the body of the car. You would have to bring the bolt above the factory bolt height to lower the body. Lowering the front bolt would lower the IC if you really were lowering it BUT in this case you really arent, its still in the same position in relation to the diff, the IC is measured from the C/L of the diff and from the ground, the spring arch didnt change when its put in a upper or lower hole... it would be true if this were actually a ladder bar

Re: Lowering Links For Leaf Spring Suspension [Re: MR_P_BODY] #541630 03/20/10 07:09 PM 03/20/10 07:09 PM
Joined: Jan 2006 Posts: 419 NY F F1Scamp mopar
F1Scamp mopar F Joined: Jan 2006 Posts: 419 NY	Lowering the front bolt would lower the IC if you really were lowering it BUT in this case you really arent, its still in the same position in relation to the diff, the IC is measured from the C/L of the diff and from the ground, the spring arch didnt change when its put in a upper or lower hole... it would be true if this were actually a ladder bar Have a diagram to show what you are saying? I have a couple of diagrams showing it is measured from the front of contact patch through the front of the spring bolt.? Work In Progress- 71' Duster F.A.S.T.- 10.36@130 Smallblock Record Holder.

Re: Lowering Links For Leaf Spring Suspension [Re: F1Scamp] #541631 03/20/10 07:14 PM 03/20/10 07:14 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	Have a diagram to show what you are saying? I have a couple of diagrams showing it is measured from the front of contact patch through the front of the spring bolt.? Have a diagram of what... how the IC is measured?

Re: Lowering Links For Leaf Spring Suspension [Re: F1Scamp] #541632 03/20/10 07:15 PM 03/20/10 07:15 PM
Joined: Jan 2006 Posts: 419 NY F F1Scamp mopar
F1Scamp mopar F Joined: Jan 2006 Posts: 419 NY	I made this horrible paint image to show what I meant. Am I wrong? 5877453-IC.JPG (46 downloads) Work In Progress- 71' Duster F.A.S.T.- 10.36@130 Smallblock Record Holder.

Re: Lowering Links For Leaf Spring Suspension [Re: F1Scamp] #541633 03/20/10 07:19 PM 03/20/10 07:19 PM
Joined: Feb 2004 Posts: 6,257 acworth / N. georgia - south e... cheapstreetdustr master
cheapstreetdustr master Joined: Feb 2004 Posts: 6,257 acworth / N. georgia - south e...	my impression is if you lower the front spring bolt mount. you are lowering the I/C... (your raising the rear of the car..) and your changing slightly the pinion angle. if you wanted to lower the rear ride height youd have to raise the front spring bolt mount or you could put sliders on the rear of the spring..and lower the car.. but moveing either end of the spring will move I/C the rear sliders effectively move the front spring eye down..when the chassis it self lowers. the tire stay put..so the angle from tire to front spring mount still moves.. cheaspt. 365" Iron J heads,,3480lbs best 1.39 60ft on SS springs.10.54,124 mph ...6.67 1/8th et.average 60fts 1.46 w/ small cam &.063 no2 pill tagged & insured [image][/image]

Re: Lowering Links For Leaf Spring Suspension [Re: F1Scamp] #541634 03/20/10 07:21 PM 03/20/10 07:21 PM
Joined: Feb 2004 Posts: 6,257 acworth / N. georgia - south e... cheapstreetdustr master
cheapstreetdustr master Joined: Feb 2004 Posts: 6,257 acworth / N. georgia - south e...	Quote: I made this horrible paint image to show what I meant. Am I wrong? the only factor that i see may need to be addressed with this picture is if you choose the upper hole in the diagram you would have to adjust (lower) the position of the box/square in that drawing to account for the lower ride height.. cheapst. 5877465-5877453-IC.jpg (37 downloads) 365" Iron J heads,,3480lbs best 1.39 60ft on SS springs.10.54,124 mph ...6.67 1/8th et.average 60fts 1.46 w/ small cam &.063 no2 pill tagged & insured [image][/image]

Re: Lowering Links For Leaf Spring Suspension [Re: F1Scamp] #541635 03/20/10 07:25 PM 03/20/10 07:25 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: I made this horrible paint image to show what I meant. Am I wrong? Well it doesnt have anything to do with the bottom of the tire when you measure the IC... first in a ladder bar or a leaf spring you cant change the length of the IC, a ladder bar you can change the height of the IC, but in a leaf spring you cant UNLESS you change the arch of the spring where it would set up higher or lower, but in the case here the arch didnt change so the front bolt is still in the same height with relationship to the diff... all that happened in this case is the body moved up or down

Re: Lowering Links For Leaf Spring Suspension [Re: MR_P_BODY] #541636 03/20/10 07:31 PM 03/20/10 07:31 PM
Joined: Feb 2004 Posts: 6,257 acworth / N. georgia - south e... cheapstreetdustr master
cheapstreetdustr master Joined: Feb 2004 Posts: 6,257 acworth / N. georgia - south e...	Quote: Quote: I made this horrible paint image to show what I meant. Am I wrong? Well it doesnt have anything to do with the bottom of the tire when you measure the IC... first in a ladder bar or a leaf spring you cant change the length of the IC, a ladder bar you can change the height of the IC, but in a leaf spring you cant UNLESS you change the arch of the spring where it would set up higher or lower, but in the case here the arch didnt change so the front bolt is still in the same height with relationship to the diff... all that happened in this case is the body moved up or down double check that MrP.. the reason i say this..is .. if you take that diagram and measure the distance from the center of the axle to the lower hole then to the middle hole then the top hole.. you will find the top holes distance will be the longer/longest distance of the three positions. unless you drill the three holes along a radius from the center axle..(not as shown...as shown its running in a straigh verticle line..) so you would either have to move the Box/chassis down... to reach the spring bolt or raise the center line of the axle ..again...so the spring bolt will reach the hole. this will inevitably change the three points that factor to find I/C the only point (of the three) that doesnt move is the bottom of the tire..as it is setting on the ground... and its relation ship to the axle centerline as these two points are determined by tire diameter..but i dirgress cheapst 5877475-5877453-IC.jpg (25 downloads) 365" Iron J heads,,3480lbs best 1.39 60ft on SS springs.10.54,124 mph ...6.67 1/8th et.average 60fts 1.46 w/ small cam &.063 no2 pill tagged & insured [image][/image]

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