Stock 1937 spring over in an A will it work

Ok I want to put a stock 37-40 undropped axle on the front of my 31, anybody know if I can run a spring over instead of in front? I don't want to shorten the wheel base and I want it to sit higher because I'm thinking of bringing it back as a truck

 

It requires a custom spring width, I beleive someone makes one for that application.

 

Thanks I'll have to check Posies

 

Has anyone done this or something similar ?

 

You will need a main leaf that is a different length for a spring over application. I do not know if any hot rod companies stock one that is the right length. We normally go to the local sprin hous ans have one made up. It is just a matter of putting your spring perches on the axle and measuring then going to the spring house and telling them what you need.

All you will need is an adjusted length main leaf and then restack your spring. You may have to take a grinder to a leaf or two to make them fit properly. This is something that the average guy can do.

 

That's what I needed to know, thanks a bunch PnB !!

 

Posies has it. Check their listings for Ford front springs.

Try to keep the rear of the bones under the car as much as possible, so the tires won't hit them on full turns.

 

Thanks, is mounting them under th rails far enough ? That's why I wanted to use a 37-41 axle I think it's 48 1/2 stock. I was hoping that was wide enough while still not being lowered

 

The boss for the bones is pretty close to the boss for the king pin on those. So though the axle is wider the bones are closer to the wheels. I was going to use that setup on my 30 but I decided to use a stock axel.

 

WOAH that was post 300!!!

 

The 37-40 axle can be installed in a Model A but... It requires a special spring cord distance to compensate for the wider perch dimension, model a perch is 37" vs 37/41 perch 38.5", spring then becomes 33.5". You cannot use the 37-40 spring as it is 2" wide and longer than necessary as well as not fitting the 1 3/4" A cross member. The stock wishbone can be used by spreading the span its about 1 1/2" narrower and this slightly moves the axle towards the rear if you are using the stock Model A transmission mount. The next issue with the a wishbone is that it is a 2 1/4" boss and the 37 axle is a 2 1/2" boss so you will have to grind the axle boss down to fit.

Personally I don't see that you have any advantage using this set up over the stock Model A axle since you don't wish to drop the stance of the car. After all this work its about the same height. Might as well stick to the stock Model A axle and save a bunch of work and expense.

 

I was just writing this same thing.

From what I gather the plan is to split the wishbone, and the OP is worried about tire rub on the radius rods. If it's stock height just leave the wishbone as is.

 

I am taking out a mustang II and going to a straight axle, sorry I left that part out. I was looking for a straight axle and thought that looked like a good option if going with disc brakes

 

You just landed on my favorite person list.

At long last someone who gets it. The boss should give you free Alliance membership for life.

 

Thanks PnB, I just felt stupid leaving that part out especially with folks giving me that detailed info, and I am basically starting with the rails and build down