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Rear shock question
#1974897
12/23/15 12:51 AM
12/23/15 12:51 AM
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Joined: Jun 2003
Posts: 9,225
Charleston
sixpackgut
OP
Drag Week Mod Champion
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OP
Drag Week Mod Champion
Joined: Jun 2003
Posts: 9,225
Charleston
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How much shock travel do you want to have on a leaf spring car?
Gen 3 power 6.22@110, 9.85@135
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performance only racing, CRT, ultimate converter, superior design concepts, ThumperCarbs
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Re: Rear shock question
[Re: sixpackgut]
#1974906
12/23/15 01:07 AM
12/23/15 01:07 AM
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Joined: Jan 2003
Posts: 6,150
Melbourne , Australia
LA360
master
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master
Joined: Jan 2003
Posts: 6,150
Melbourne , Australia
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I would say that around 5" will typically work on most cars. I installed a pair of 7" travel AFCO's on a friends car, but that was more to get the tires off without have to unbolt too much
Alan Jones
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Re: Rear shock question
[Re: SpareParts]
#1974991
12/23/15 03:19 AM
12/23/15 03:19 AM
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Joined: Jun 2003
Posts: 9,225
Charleston
sixpackgut
OP
Drag Week Mod Champion
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OP
Drag Week Mod Champion
Joined: Jun 2003
Posts: 9,225
Charleston
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I have afco 3890's on back. They long Theyre 25" long! I have no idea how you can have a shock that long on your car
Gen 3 power 6.22@110, 9.85@135
Follow @g3hemiswap on instagram
performance only racing, CRT, ultimate converter, superior design concepts, ThumperCarbs
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Re: Rear shock question
[Re: sixpackgut]
#1974999
12/23/15 03:32 AM
12/23/15 03:32 AM
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Joined: Feb 2011
Posts: 4,302
Nebraska
72Swinger
master
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master
Joined: Feb 2011
Posts: 4,302
Nebraska
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If your springs are moved inboard, it makes longer shocks even stock length shocks to long.
Mopar to the bone!!!
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Re: Rear shock question
[Re: sixpackgut]
#1975110
12/23/15 01:37 PM
12/23/15 01:37 PM
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Joined: Jul 2004
Posts: 19,318
State of confusion
Thumperdart
I Live Here
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I Live Here
Joined: Jul 2004
Posts: 19,318
State of confusion
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I`m runnin Rancho 5-ways and don`t have the lengths handy but iirc there`s 6" of travel w/2" of that being compression and the rest extension. The key is enuff comp. on the street to not bottom out and enuff ext. to not unload the tires.......
72 Dart 470 n/a BB stroker street car `THUMPER`...Check me out on FB Dominic Thumper for videos and lots of carb pics......760-900-3895.....
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Re: Rear shock question
[Re: Thumperdart]
#1975160
12/23/15 03:10 PM
12/23/15 03:10 PM
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Joined: Jun 2003
Posts: 9,225
Charleston
sixpackgut
OP
Drag Week Mod Champion
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OP
Drag Week Mod Champion
Joined: Jun 2003
Posts: 9,225
Charleston
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I`m runnin Rancho 5-ways and don`t have the lengths handy but iirc there`s 6" of travel w/2" of that being compression and the rest extension. The key is enuff comp. on the street to not bottom out and enuff ext. to not unload the tires....... that is exactly what I was thinking also but I was having a lot of rear separation looking at photos of my car at drag week now that I have leaf springs on it. Thinking if I had a stiffer shock than I wouldn't need that much either.
Gen 3 power 6.22@110, 9.85@135
Follow @g3hemiswap on instagram
performance only racing, CRT, ultimate converter, superior design concepts, ThumperCarbs
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Re: Rear shock question
[Re: sixpackgut]
#1975164
12/23/15 03:14 PM
12/23/15 03:14 PM
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Joined: Jul 2004
Posts: 19,318
State of confusion
Thumperdart
I Live Here
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I Live Here
Joined: Jul 2004
Posts: 19,318
State of confusion
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Yep, tighter extension............
72 Dart 470 n/a BB stroker street car `THUMPER`...Check me out on FB Dominic Thumper for videos and lots of carb pics......760-900-3895.....
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Re: Rear shock question
[Re: sixpackgut]
#1975261
12/23/15 05:46 PM
12/23/15 05:46 PM
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Joined: Mar 2008
Posts: 861
lancaster,california
johnnycuda
super stock
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super stock
Joined: Mar 2008
Posts: 861
lancaster,california
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We suggest 1.5'-2" of downward travel from ride height, and 4" of extension on a street driven car if possible, on a drag only car 1" minimum of the shock shaft showing at ride height, max of 2".
The stock rear shock length on A-bodies is 14.23" collapsed and 22.15" extended, ride height generally around 16" to 17", assmuning its not lowered or raised considerably.
1970 'Cuda,Lime Light,499 Indy S/R's 10.70's @125,street driven ALOT!
1966 Barracuda 360,now a 5spd,Hemi Orange,Hot Rod Air,
New daily driver-2003 Ram 2500 Cummins 5.9
'69 Valiant 2-dr, sleeper!
New project---1938 Dodge truck, plan is a 360 with a A500, AC, Calvert rear susp., rack and pinion front with coils.
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Re: Rear shock question
[Re: Monte_Smith]
#1975288
12/23/15 06:47 PM
12/23/15 06:47 PM
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Joined: Jul 2004
Posts: 19,318
State of confusion
Thumperdart
I Live Here
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I Live Here
Joined: Jul 2004
Posts: 19,318
State of confusion
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If you want less separation, you need more spring rate. The shock only controls the housing and is not a travel limiter, unless you let it bottom or top out. On my slow ass junk, tightening the shocks slowed the extension and makes it ride like a truck............
72 Dart 470 n/a BB stroker street car `THUMPER`...Check me out on FB Dominic Thumper for videos and lots of carb pics......760-900-3895.....
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Re: Rear shock question
[Re: sixpackgut]
#1975307
12/23/15 07:20 PM
12/23/15 07:20 PM
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Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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How much shock travel do you want to have on a leaf spring car? Ray.. I'm sure the 9 way rancho shocks would work for ya.. same length as you have now(at least I think they are) and it has more control on the extension.. save your self 2" of compression for the street... if you bottom out you hit a damn good pot hole(a normal Mich road).. just slow the extension more on your launch.. might be at 9.. but I would think a 8 
Last edited by MR_P_BODY; 12/23/15 07:23 PM.
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Re: Rear shock question
[Re: Monte_Smith]
#1975381
12/23/15 09:29 PM
12/23/15 09:29 PM
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Joined: Jun 2003
Posts: 9,225
Charleston
sixpackgut
OP
Drag Week Mod Champion
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OP
Drag Week Mod Champion
Joined: Jun 2003
Posts: 9,225
Charleston
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Part of my problem was hap hazardly ordering a leaf spring and caltracs 2 weeks before Drag Week not knowing how my car would sit. I have 3 spring eye holes and i used the higher one to get it to sit right.
In my living room right now are negative 1 inch mono rears to get the front eye lower and ride hight correct. Also just ordered shocks that are 10 compressed 15 extended double adjustables. Also changing my 350 springs i just put on the front to 300s. Also have a new rack and pinion for my car because mine is shot.
I am taking off Strange SA shocks off the rear. Also plan on replacing my wilwood street vented rotor brakes for wilwood drag setup. Will lose 8 lbs changing the front brakes
Gen 3 power 6.22@110, 9.85@135
Follow @g3hemiswap on instagram
performance only racing, CRT, ultimate converter, superior design concepts, ThumperCarbs
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Re: Rear shock question
[Re: sixpackgut]
#1975567
12/24/15 10:28 AM
12/24/15 10:28 AM
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Joined: Sep 2012
Posts: 1,563
Janesville, WI
SpareParts
pro stock
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pro stock
Joined: Sep 2012
Posts: 1,563
Janesville, WI
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I have afco 3890's on back. They long Theyre 25" long! I have no idea how you can have a shock that long on your car Lol she's there, it's the one they make for a Mopar rear. I am doing different mounts for it, I wanted the extension to never be a problem.
Last edited by SpareParts; 12/24/15 10:31 AM.
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Re: Rear shock question
[Re: sixpackgut]
#1975660
12/24/15 02:23 PM
12/24/15 02:23 PM
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Joined: Jul 2004
Posts: 19,318
State of confusion
Thumperdart
I Live Here
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I Live Here
Joined: Jul 2004
Posts: 19,318
State of confusion
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Part of my problem was hap hazardly ordering a leaf spring and caltracs 2 weeks before Drag Week not knowing how my car would sit. I have 3 spring eye holes and i used the higher one to get it to sit right.
In my living room right now are negative 1 inch mono rears to get the front eye lower and ride hight correct. Also just ordered shocks that are 10 compressed 15 extended double adjustables. Also changing my 350 springs i just put on the front to 300s. Also have a new rack and pinion for my car because mine is shot.
I am taking off Strange SA shocks off the rear. Also plan on replacing my wilwood street vented rotor brakes for wilwood drag setup. Will lose 8 lbs changing the front brakes
Go get em cowboy................ 
72 Dart 470 n/a BB stroker street car `THUMPER`...Check me out on FB Dominic Thumper for videos and lots of carb pics......760-900-3895.....
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Re: Rear shock question
[Re: Monte_Smith]
#1975677
12/24/15 02:53 PM
12/24/15 02:53 PM
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Joined: Mar 2006
Posts: 9,883
MI, usa
dvw
master
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master
Joined: Mar 2006
Posts: 9,883
MI, usa
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Tightening the shock is supposed to slow the extension and limit the speed of rise, but not control amount of rise, that is strictly spring rate.
Tightening a single, adjusts both bump and extension, so yes, will make it ride stiff Doesn't the front eye location control rise? Doug
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Re: Rear shock question
[Re: dvw]
#1975721
12/24/15 04:08 PM
12/24/15 04:08 PM
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Joined: Jun 2003
Posts: 9,225
Charleston
sixpackgut
OP
Drag Week Mod Champion
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OP
Drag Week Mod Champion
Joined: Jun 2003
Posts: 9,225
Charleston
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Tightening the shock is supposed to slow the extension and limit the speed of rise, but not control amount of rise, that is strictly spring rate.
Tightening a single, adjusts both bump and extension, so yes, will make it ride stiff Doesn't the front eye location control rise? Doug Yes, that is why I got the right springs for the car now.
Gen 3 power 6.22@110, 9.85@135
Follow @g3hemiswap on instagram
performance only racing, CRT, ultimate converter, superior design concepts, ThumperCarbs
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Re: Rear shock question
[Re: sixpackgut]
#1975808
12/24/15 07:27 PM
12/24/15 07:27 PM
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Joined: Jun 2003
Posts: 9,225
Charleston
sixpackgut
OP
Drag Week Mod Champion
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OP
Drag Week Mod Champion
Joined: Jun 2003
Posts: 9,225
Charleston
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Fyi, i just swapped my leafs and weighed everthing.
My switch from ladder bars to leafs and caltracs added 52lbs to my car
Gen 3 power 6.22@110, 9.85@135
Follow @g3hemiswap on instagram
performance only racing, CRT, ultimate converter, superior design concepts, ThumperCarbs
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