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Author Topic:   spring problem?
Dirt Maniac

Total posts: 103
posted November 14, 2002 06:15 AM
Hello, i searched but could not seem to find the answers...i found the same question though.......I just put a new set of AFCO pigtails in the back of my monte. Problem....they seem too short. The car frame is on jack stands,rearend hanging,no tires....the springs sit on the rear housing,and lack about 3" or so.What's up? I know they are shorter than stock, but is this a problem? I would think when changing tires OR if someone hits AND RAISES you up..the springs would just drop out.Do i HAVE to put spring buckets up above? HELP.......

Dirt Maniac

Total posts: 140
posted November 14, 2002 09:14 AM
Hello Longracing25. You don't mention the height of the springs......But, since you have the pigtail springs....You have the springs designed for the car......And,should not have a problem with height,provided the front springs you use are matched to the rear.........In short, if you are using ALL the springs Afco recommended, You should not have a problem height wise.........So, I guess the first question would be "what are your ride heights".......If they are correct,you are OK......

You are correct in your concern about the shorter springs coming can and does happen.......if you do not take measures to retain them......

Assuming you are using the stock rear end...........Some guys use something as simple as a radiator hose clamp.....around the spring and through the side of the stock spring perch.......

I would recommend something a little more substantial.......You could weld a bolt to the tube in the center of the perch....slide the spring over it....use a piece of flatstock with a hole in the center,slide it through the bottom coil on the spring.....bolt it down......

you could do the same thing with out welding by bending a piece of flatstock to go under the perch......In short, sandwich the bottom coil with some flatstock and a bolt......

Usually,You do not have to worry about the top of the spring if you positively retain the bottom of the spring......

I hope this answers all your questions to your satisfaction........If not, Then I ask some of the other guys to jump in and help.....As I am leaving today and won't be back to see you questions for a week or so........

Good Luck,


Dirt Maniac

Total posts: 103
posted November 14, 2002 12:19 PM
It's the 11" afco stock type pigtail. I have a ford 9" with metric brackets(spring perch directly on top of housing). I would imagine everybody who uses afco springs has this problem....what do you all do?

Dirt Roller

Total posts: 17
posted November 15, 2002 09:38 AM

Dirt Full Roller

Total posts: 61
posted November 16, 2002 02:56 AM
you will probably end up with some type of
spacer at the top . 11 inch springs are pretty short and you may have some bottoming
out troubles. stock GM fan pulleys make
excellent spacers and you can get them with
one , two or three grooves for "weight jacking". they fit almost perfectly in the spring and the frame. (you can usually get them cheaper than store bought spacers)
hope this helps

Dirt Maniac

Total posts: 103
posted November 16, 2002 03:48 AM
Well,i can'r run spacers or upper buckets. The rearend i have is a ford 9" with NON-stock metric mounts.I thought about something down the center of the spring, maybe only about 4" help center it at least. But, i like the bolt in the center idea, with flat stock. I would have thought this was a pretty common problem amoung NON stock spring guys.....Any other ideas?

Dirt Full Roller

Total posts: 61
posted November 17, 2002 11:25 AM
if you have non stock mounts then use 12-13 inch springs with out the pigtail. i still think 11 inchers (with out spacers )will be too short for most dirt tracks

Dirt Freak

Total posts: 273
posted November 17, 2002 05:36 PM
If it were me, I'd re-fab the spring perches on my rear end housing. I think I'd CAREFULLY cut the existing ones off and weld a 6" section of (forgive me but it works) 3" basement post to the top of my 9 in housing. I'd then fabricate a couple of 6" steel doughnuts that would slip down over those pieces of post. When it was, on the left side, about 3" from the housing and 3" from the top put myself a small tack weld on it so that it would not slip. I'd then slide the other down the right side until it was about 4" from the top-2" from the axle tube and tack it on. When you get to the point that you are ready to set the car up and scale it out, you will be able to change ride heights and cross percentages by changing the location of the "doughnut" on the main tube.When you have set the car up you'll want to cut the remaining inside tube off to where you can just barely remove the spring from over it without pulling the shock. If there is a problem with tech you could always put a shield around the outside to hide the different heights of your home made spring perches. Or do your rules state that SPRING PERCHES must be the same height?

Dirt Roller

Total posts: 15
posted November 19, 2002 05:33 PM
What I have done is weld a piece of 1 1/2 inch tubing at the top that extends down 1 inch past the top coil with the rear end hanging and shocks extended to full travel. You must remove the shocks to remove the springs, but it works.

Dirt Maniac

Total posts: 102
posted November 26, 2002 02:38 AM
I have the same problem as you, I put in the afco pig tales and the rearend is lower and if you jack the car up the rear end just floats and u hope the springs go back in place when you let it down. Afco has recommended these springs on my car 1984 Monte Carlo and said they would work with out spacers but they dont and I cant run them at my track and have no clue what to do. Just like the front where they recommended the 5/12 x 12 spings thatdont fit right in the front either, they are shorter than the stock springs that was in it but yet the front end is highter and creates unwanted negative camber in the left front?

Dirt Full Roller

Total posts: 69
posted November 26, 2002 05:18 PM
We were also running the 11 inch pigtails. I did not like these for a lot of reasons. The fenderwell was rubbing the right rear tire. I also did not like having to jack up the car with such short springs on. Our car builder reccomends 13 inch springs (no pig tail). If you run a metric rear and not a Ford you will want some adapters on the rear to keep the springs seated.

[This message has been edited by Jimhobby02 (edited November 26, 2002).]

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