Technical 32 vs 40 Rear Cross Member

Hi All,

I was in the garage comparing an original 32 cross member to a rather crusty 40 cross member and I thought I would take some pics in case anyone else is interested in seeing the difference.







Thanks,

--louis

 

Wow that would really lower your ride height fast .


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Helpful thread for sure. I have a 40 that was sawzalled out flush to the frame rails and it still looks wide enough for a 32 application. Might need a little added but definitely would work on pre boxed rails. If I was to flatten it it would be wide enough as well.

 

The stock 40 looks deeper than the 32 by a couple inches. Meaning a higher rearend. I've read of guys using a 33-4 rear crossmember in their 32's to lower an inch or so over stock. I think the 33-4 might need a little trim of the ends to fit in the 32 frame, but is a rather simple conversion otherwise to retain the stock curved spring..

 

Yeah the 40 is couple of inches deeper than the 32. The 33/42 is shallower than the 32 and would give you a slight drop without having to flatten the rear cross member.

Thanks,

--louis

 

Thought this might be usefull here

 

Flattenened 40 Ford in a 32 frame.
Definitely drops it down seriously in the rear.


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I’ve got an extra ‘40 rear crossmember if anyone needs it for their build.


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Here's my '34 chassis with a flattened (a bit too much) '40 crossmember. It came with a Model A, but since I wasn't going to run a QC, no need to see the pig. Flattening it turned out to be an exercise in futility, as I had to flip the spacer pac on the mono-leaf '40 spring over to raise the rear, despite the C notch in the frame. Ooopsies...

 

Yes but you were in the garage cutting metal, RRR!!!!!!

 

I cut it twice and it was still too short!

 

DAMN IT!!!!!!!!!

 

The '40 rear cross member allows the use of a straight rear spring, the '32 is not straight but "curved"(33-34 also I believe)

 

Yeah, but there's more to it than that.