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Old 10-14-2009, 08:28 AM
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Drop Axle help

I think I want to install a drop axle with single leaf for my 46 Dodge. After studying it's current axle, drum brake set up, the leafs will stick out past the grille since it won't have fenders. This is my first time with a non a-arm front end. It looks like I could use a leaf behind axle with hair pins and mount the spring under the cross member. Any other ideas, tips or help would be appreciated...



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Old 10-14-2009, 09:49 AM
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Will you be using the existing front cross member?

My approach would be to look at an after market cross member like a '32 Ford or similar or make one and go with a dropped axle, transverse leaf srpring on top of the axle, four bar or hair pins. The spring behind the axle is what I would recommend for a lighter car...... Right again, it's an opinion.

I recommend you look at Chassis Engineering in West Branch, Iowa. They have lots of stuff for front ends and their dropped axles are forgings, not castings.
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Old 10-14-2009, 08:15 PM
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Thank you!!!
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Old 10-30-2009, 10:59 AM
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After much thought, my buddy and I decided to try an old school approach. I'm going to cut the leafs in front of the u-bolts, leaving the back half, add a panhard bar, use the stock shock mounts on the axle and build top mounts, utilizing air ride shock combos. The steering geometry to the box should be easy. I found ECI has a disc brake conversion set up, I don't like drum brakes in the front...I'm currently looking for a S-10 rear axle, the width is perfect and I can get a posi set for it. In back I'll use a two link with panhard bar and air bags with shocks.With the rear already kicked up a bit, not sure yet if more will be needed. I'm going to do the front this weekend...
Any suggestions on this would be great...
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Old 10-30-2009, 05:57 PM
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If I understand you correctly, the rear half of the springs you're going to cut is the end without the shackles. Is that correct? These half springs will then become your radius rods or bars.

Im not familiar with the air ride shocks to which you refer. You'll need air bags like the Firestones or possibly Goodyear type bags similar to those I've seen in industrial applications. I presume those were the forerunners to whatever is being used today for airbags. Or, they're actually using Firestones and G-years.

I'm also guessing. I do a lot of guessing eh? Maybe I should do more homework..... guessing you know you can't use just the old air shocks - the kind still available for rear axles for trailer towing and popular way back to jack the rear ends of cars up for bigger tires.
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Old 11-04-2009, 09:37 AM
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These are the Shockwave air ride I'm talking about for front. We are building the trailing arms now. The frame still is 11" off the ground, with a 5" body drop, 6" should be perfect and keep the oil pan out of harms way...
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Old 11-09-2009, 08:50 AM
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Got a free rear end this weekend, a 89 Toyota 4x4 with 4:10 gears, tore it apart and using the housing for rear mock up. It measures 54" which is perfect, wonder if anybody will notice 6 lugs instead of 5?
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