Re: Advantages of 4 Link Rear vs. Leafs?
in every way possible except price.
leaf springs setup are notorious for wheel hop because of spring wrap up. Under power the rear axle pinion will try to rotate up causing the spring to become s shape and straiten out causing the hop.
There are traction aids for leaf spring suspension in the form of Pinion snubbers, slapper/traction bars and leaf links.
Leaf spring Pros: inexpensive, no laterlal loacting device needed.
4 Links have been used in production cars for a long time in one form or another. They can be adjusted for any type of situation, street, drag, road course. They are simple yet complex. In the attempt to rotate upward the rear end housing will pull on the top links and push on the lower links. There will be no wheel hop because the links cannot bend therefor planting the tires into the pavement and pushing the car forward. In a street car the links should be position parallel so they don't bind on a turn, though is easily adjusted for drag. If it it just a regular 4 link you will need a Lateral Locating device (something to hole the rear end from side to side) aka a track bar or watts link. A better alternative is a triangulate 4 link that will provide the same aspects of a regular 4 link plus hold the axle side to side. Triangulated 4 links have been used in production cars including the mustang for a long time. Have good street manners with great traction, but always have room for improvement. There is alot of factors the goes into fabricating and setting up a 4 link suspension and should only be used if you understand the effects.
Cons: expensive, difficult to fabricate in some cars.
83 FULLSIZE Bronco - 357W Comp Extreme 4x4 cam. Edelbrock Performer Intake and 600cfm Toilet Bowl.
Last edited by 83broncodude; 02-05-2009 at 10:47 PM.