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Dropped Axle vs Single Leaf Spring
#686808 Sun Oct 17 2010 02:31 AM
Joined: Aug 2010
Posts: 46
M
mbarrad Offline OP
Wrench Fetcher
Looking at ways to safely lower my 58 Apache. Two options I am looking into are dropped axle and single leaf spring kit. With the dropped axle, I am looking at buying longer steering arms. With the single leaf spring, I am worried about stability (side to side travel). For those who have done either, what are your opinons? Thanks.


1958 Apache Shortbed Fleetside
Re: Dropped Axle vs Single Leaf Spring
mbarrad #687090 Mon Oct 18 2010 03:27 AM
Joined: Feb 2000
Posts: 4,238
J
Shop Shark
From what I have read, the single leaf springs are dangerous. If they break, you are hitting the pavement! Atleast with a multi-leaf spring, the others may hold it long enough to get out of danger.

Joe

Re: Dropped Axle vs Single Leaf Spring
Joe H #687103 Mon Oct 18 2010 03:54 AM
Joined: May 2006
Posts: 8,490
L
Master Gabster
Mono leaf springs are perfectly safe. Plenty of OEMs use monoleaf springs, including Corvette since '84 and the 2nd gen Chrysler minivans. I have yet to see one with a failed spring, exept for 1 Dodge Caravan, but it wasn't a breakage failure, but rather the spring eye was stretched out due to a carless tow truck driver thinking the rear spring was agood place to hook up to to pull the van out of a ditch.
I have, however, seen plenty of failed multi leaf springs, with the vehicle ridig on the jounce bumpers.


Bill Burmeister
Re: Dropped Axle vs Single Leaf Spring
Joe H #687108 Mon Oct 18 2010 04:00 AM
Joined: Nov 2001
Posts: 1,747
D
Shop Shark
I bought a set of the Mono-Leafs and one snapped in half on me on I-80.
Tore up a brand new tire,sent me to the right lane in a hurry, and cost me 120.00 to have the truck towed home. The "truck parts place" in California reimbursed me for everything,, but no more mono-leafs for me.
Your best bet is a drop axle www.droppedaxles.com or de-arch your springs and remove a few leaves. Thats what im running now.

Re: Dropped Axle vs Single Leaf Spring
mbarrad #687167 Mon Oct 18 2010 12:55 PM
Joined: Aug 2010
Posts: 59
W
Wrench Fetcher
When using the dropped axles, do you use your stock springs?

Last edited by WVMountaineer; Mon Oct 18 2010 12:55 PM.
Re: Dropped Axle vs Single Leaf Spring
WVMountaineer #687270 Mon Oct 18 2010 09:53 PM
Joined: Oct 2003
Posts: 5,161
O
Cruising in the Passing Lane
Any time anything in your steering or suspension breaks you could have a very dangerous situation. Properly engineered quality parts installed correctly is the answer.

I've not run mono-leafs on an AD truck but if the parts are well designed and manufactured I'd not be afraid of them. I have a car with fiberglass mono-leafs and spring failure is not common on them.

Years ago I had a Blazer with mono-leafs and I beat it up enough to break the spring mounts (and other things), but never had any trouble with the springs themselves.

Anytime you change the relationship of the spindles to the steering you may need to make adjustments to prevent bump steer. Relative to the steering box dropping your truck with a mono-leaf isn't any different than dropping the axle.

You can combine lowering methods such as mono-leafs and a
dropped axle to achieve more drop. You need to watch the tie-rod and steering arm locations to be sure you're not causing trouble.

Look for trucks that have the stance you want at car shows and crawl under with your camera to see how they did it. Asking the owners is good too, but I've found that often the guy showing a truck doesn't actually know how it was built.


Its true, I really don't do anything but browse the Internet looking for trouble...
Steve@OldSub.com . www.OldSub.com . www.MaxwellGarage.com . www.OldGasTowRigs.com
'55 1st GMC Suburban . '54 GMC 250 trailer puller project. '54 GMC 250 Hydra-Matic . '54 Chevy 3100 . '47 Chevy COE . and more...
Re: Dropped Axle vs Single Leaf Spring
OldSub #687361 Tue Oct 19 2010 05:17 AM
Joined: Aug 2010
Posts: 46
M
mbarrad Offline OP
Wrench Fetcher
Thanks for the helpful info. Probably get with Sid from Dropped Axles and get setup.


1958 Apache Shortbed Fleetside
Re: Dropped Axle vs Single Leaf Spring
mbarrad #693749 Wed Nov 10 2010 08:03 PM
Joined: Apr 2008
Posts: 256
B
Shop Shark
I have ? for you im looking to lower the front of my 49 suburban i see everyone says to use Sid product from droppedaxle.com but is there anything wrongwith using the new made axle from cpp Sid product looks very very nice and the only reasonim asking IS because im going to collect all my parts before i do my tear downand rebuild and Sid is out of his core axles so i would have to buy one locally $100 and send it out to him shipping ?? and his price to stretch and old axle is more expensive then if i where to just buy the new one from cpp so i guess my real ? is. Which axle is thebetter product and what are the pros and cons to either one thanks

Re: Dropped Axle vs Single Leaf Spring
bigtony55 #693851 Thu Nov 11 2010 02:42 AM
Joined: Apr 2008
Posts: 256
B
Shop Shark
?????

Re: Dropped Axle vs Single Leaf Spring
bigtony55 #693999 Thu Nov 11 2010 04:46 PM
Joined: Feb 2000
Posts: 4,238
J
Shop Shark
The stock axle is American made steel, the new one is Who knows what! The stock axle is heated and bent, the new axle is made that way. Its a tough call, whats the warranty like on the new one? Whats Sids warranty? What are the shipping costs? Both will get the job done. If it was mine, I would go for a stock axle, I just feel better about using a GM product even if it is altered. Axle have been heated and bent for a lot of years, and you don't hear about a lot of them breaking. Ask over on the Jalopy Journal site, they do a lot more dropping then on this site, theres even pictures on how its done if you search around.

http://www.jalopyjournal.com/
http://www.jalopyjournal.com/forum/forumdisplay.php?f=5

Last edited by Joe H; Thu Nov 11 2010 04:47 PM.
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