[6bolt]

I am preparing to install a Heidts X member in my 53 GMC 1/ ton. In the Heidt's kit, there are C notch that are included in the kit. Do these have to be installed or does the rack not have enough clearance? Anybody out there have experience with this?

Any advise is appreciated.

[AllSteel34]

I installed another brand of MII front on my '49 and it did not require the bottom of the frame to be notched. I don't know about the Heidt's unit specifically.

Chris

[6bolt]

What brand did you use? I have seen other brand x members that do not have to used the notches, but I guess it all depends on the distance betwwen the rack to the bottom of the frame.

I wonder if the Heidts x member is designed to be lower than most other types.....

Tom

[6bolt]

oops ..duplicate post (sorry!)

[stea]

Used the Heidts on my 39 GMC, I had to use the notches for clearance. Mine sits pretty low, don't know if this is a Heidts specific issue.

[home brew]

6bolt - just for your information you are purchasing a front cross member not an X member. An X member is used to strengthen the frame and is located between the front cross member and the rear crossmember. See the pic below.

[powerrodsmike]

Some have more drop than others. Some the drop is built in the spindle, some is in the crossmember
I put a Heidts MII in a 57 chevy pickup and it needed the c notches installed to clear the rack.

Later, mikey

[Centerline]

Whether the "C" notch is required depends on the particular vehicle the kit is designed for. I used a Heidts unit on my '41 Chevy pro-street car and no notch was required. However, on my Chevy PU the "C" notch is required for the Mustang II rack to mount properly to the crossmember.

Here is a pic of the Heidts install on my '53 3100.



As you can see the "C" notch lines up with the mounting brackets on the crossmember, don't leave them out.

Here you can see (with everything bolted on) why the "C" notches are necessary.