Hate to bother you all but I have rummaged through the threads in this segment (my short attention span usually limits me to 40-45 pages then I give up and do this.....) and couldn't find anything that addresses lowering the rear suspension on a 51 F-1. I imagine other years around that vintage would be similar. After having a careful look at the setup as it sits now I am failing to see where putting the rear axle on top of the springs or spacer blocks are going to work. I am hoping that someone will have a suggestion or two. Thanking you in advance for your time and consideration.
Peter Parker

 

Putting the rear axel on top of the springs will lower the truck the distance of the springs and the mounting plate, how much lower do you want it?

 

I think the issue you'll run into flipping the axle on an F1 to the top of the springs is that it doesn't leave a lot of room for suspension travel. There's not a lot of kickup on the frame, and the distance between the top of the springs and the bottom of the frame is minimal without cutting and welding in a C-notch. That takes project complexity up several levels, depending on skill level and experience. Swapping out springs and/or shackles to something designed to do the job may be preferable.

 

what I did last week. posies springs are a 3" drop. then flip the rear shackle, and move the front shackle up. A simple bracket to weld to the frame to support the front shackle after you move it up. This got another 2.5" drop. I hope this helps. Joel

 

Before

after

 

That's a sweet looking truck, Jclark. Welcome to the forum! You might want to start a new thread and introduce yourself and tell more about your truck.

 

You can install a four link suspension (to lower it).

 

I think that is exactly what I am looking for. Would you be so kind as to take some detailed pictures and a product link for any items purchased? That would be very much appreciated. I love the before/after pic. Sells it quite nicely. Beautiful truck by the way.

 

I used the Heidt's mustang 2 independent front suspension with coil overs and the front sway bar. Mustang II HEIDTS® Front Suspension Kit & Mustang 2 IFS Parts - HEIDTS . that handled the front. The rear was much easier. I used the posies springs on the rear.POSIES Rods and Customs – Super Slide Springs – Street Rod Parts – Hot Rod Parts – Truck Parts – Ford and Chevy Suspensions and Chassis Parts » POSIES Classic Truck Springs. then I flipped the rear shackle and moved the front shackle up.

 

Thank you for your quick response. I am digging into the Super Slide springs now. Forgive my ignorance however, I am not sure what you mean by flipping the rear shackle but I am pretty sure I can figure out the moving up of the front shackle part. Thanks again for your help. That'll get me where I need to go. Very much appreciated. Pete

 

there are four rivets in the rear shackle. drill or cut them out. turn the shackle up side down. replace rivets with bolts. enjoy the lowered rear stance. Joel

 

You sir are awesome, thank you very much for your help. Pretty straight forward. I appreciate your time and effort. Pete

 

Here is a pic of my 49 F1 with a flip rear hanger & front rear hanger repositioned ....with Posies Super Slid springs.