i AM BUILDING A 52 F1. I purchased a frame that someone had started working on. It is set up for a small block chevy and 700 R4 and has been boxed to the f rear crossmember in front of the rear end. I want to install a parallel 4 link but have no idea where the axle center line is as everything has been removed and holes welded over. Is there a measurement say from the rear of the frame where I could use to find the axle center . I don't have a bed yet or any fenders and am planning on using a 9 in. ANY HELP WOULD BE APPRECIATED thanks

 

I will measure my 52 F-1 when I get home in a couple hours if you don't have an answer by then.

 

Are the spring hangers still in place at the rear?

 

It will interesting to see if the 48 - 52 is any different than the 53 - 56. The bed box is the same so I'm guessing the distance from the rear end of the frame rail to the CL of the rear axle is the same - 36 inches.

 

there are no spring hangers

 

Mine measures 36" from the rear edge of the frame on the drivers side to the center of the rear axle. It is also 36" from the rear edge of the frame to the center of the bump stop. Hope this helps.