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Rear shock help #2459993
03/02/18 05:05 PM
03/02/18 05:05 PM
Joined: Jan 2007
Posts: 774
Midland,Tx
wyldebill Offline OP
super stock
wyldebill  Offline OP
super stock

Joined: Jan 2007
Posts: 774
Midland,Tx
I'm in the building phase of my 68 valiant, and I'm looking at rear shocks. How much travel do I need on a leaf spring car?

Re: Rear shock help [Re: wyldebill] #2460022
03/02/18 06:19 PM
03/02/18 06:19 PM
Joined: Jan 2003
Posts: 30,947
Oregon
A
AndyF Offline
I Win
AndyF  Offline
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Oregon
Depends on the springs used. Super Stock springs have a lot of travel so you might need 8 or 10 inches of travel. That is why those cars used to use Imperial stocks back in the day and then guys switched to pickup shocks or Rancho shocks. We would set them up with 2 inches of compression and 6 to 8 inches of drop since those cars would really stand up and go.

If you have Calvert split mono leaf springs then you only need about 6 inches of travel. 2 inches of compression and 4 inches of drop should do it. Or perhaps 1.5 inches of compression and 4.5 of drop if the track is smooth.

Re: Rear shock help [Re: wyldebill] #2460042
03/02/18 07:05 PM
03/02/18 07:05 PM
Joined: Jan 2007
Posts: 774
Midland,Tx
wyldebill Offline OP
super stock
wyldebill  Offline OP
super stock

Joined: Jan 2007
Posts: 774
Midland,Tx
Thanks, I have a set of Calvert mono's.

Re: Rear shock help [Re: wyldebill] #2460043
03/02/18 07:05 PM
03/02/18 07:05 PM
Joined: Jan 2007
Posts: 774
Midland,Tx
wyldebill Offline OP
super stock
wyldebill  Offline OP
super stock

Joined: Jan 2007
Posts: 774
Midland,Tx
Thanks, I have a set of Calvert mono's.

Re: Rear shock help [Re: wyldebill] #2460206
03/02/18 10:34 PM
03/02/18 10:34 PM
Joined: Oct 2007
Posts: 472
Minnesota, USA
humpty Offline
mopar
humpty  Offline
mopar

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Posts: 472
Minnesota, USA
Andy's got it right. I ended up with a 9" shock (AFCO 3890 specifically) on my 72 with Calvert split monos stock ride height bends. That left me with nearly 2" of compression at race weight and 2" of extension remaining without the shocks connected and the rear hanging off the ground.

I would take some mesurments before ordering your shocks to be sure.

Re: Rear shock help [Re: wyldebill] #2460485
03/03/18 02:13 PM
03/03/18 02:13 PM
Joined: Jan 2003
Posts: 30,947
Oregon
A
AndyF Offline
I Win
AndyF  Offline
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Oregon
I had to make my own shock plates so I could get the lower mount in the correct location. For example, if you want 2 inches of compression and the rest for extension the lower mount needs to be located in the right spot. I couldn't find shock plates that did the trick so I welded up my own.

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Last edited by AndyF; 03/03/18 02:15 PM.
Re: Rear shock help [Re: wyldebill] #2460595
03/03/18 07:58 PM
03/03/18 07:58 PM
Joined: Oct 2011
Posts: 3,036
bean town ....Ca
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WHITEDART Offline
master
WHITEDART  Offline
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bean town ....Ca
Originally Posted By wyldebill
I'm in the building phase of my 68 valiant, and I'm looking at rear shocks. How much travel do I need on a leaf spring car?
what are you looking to do with the car how fast and what tire will this be a power adder


In the 8s N/A.with Brett miller W8's
5.07 at 133 at 2700lb
Re: Rear shock help [Re: WHITEDART] #2460976
03/04/18 05:15 PM
03/04/18 05:15 PM
Joined: Dec 2007
Posts: 12,587
Great Neck,LI,new york
hemi-itis Offline
I Live Here
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Posts: 12,587
Great Neck,LI,new york
Originally Posted By WHITEDART
Originally Posted By wyldebill
I'm in the building phase of my 68 valiant, and I'm looking at rear shocks. How much travel do I need on a leaf spring car?
what are you looking to do with the car how fast and what tire will this be a power adder

No reply kinda sets off a RED flag to me.........and no Pics work


HEMI-ITIS has no cure.
My condition is fully BLOWN!!
Re: Rear shock help [Re: AndyF] #2461482
03/05/18 02:35 PM
03/05/18 02:35 PM
Joined: Nov 2003
Posts: 2,131
New Lenox IL
cudadon Offline
top fuel
cudadon  Offline
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Posts: 2,131
New Lenox IL
Originally Posted By AndyF
I had to make my own shock plates so I could get the lower mount in the correct location. For example, if you want 2 inches of compression and the rest for extension the lower mount needs to be located in the right spot. I couldn't find shock plates that did the trick so I welded up my own.


Nice work Andy.
Don







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