1957 frame dimension ?

[DG Racing]

ok i have a 1957 3600 frame and i need to know what is the dimension of the same frame but a 3100 model

the dimension i m looking is the distance betwen the frame at the front axle my 3600 is 29 1/2 inch

[kaycee]

My 58 1/2 ton says 34" that would be outside to outside of frame, 30" inside to inside

[DG Racing]

Ok my frame is 34 inch wide but the frame rails are 2 1/4 wide at the front axle ,so it makes a distance of 29 1/2 .

so that means that a 3100 frame is only 2 inch wide ??


this info is for a installation of a mustang II crossmember
Because the crossmember i receive is only 29 inch wide

[kaycee]

Now according to my 58 manual it shows the 3600 as 34 " wide allso<I would get ahold of company that you are going to use and ask them.I would think that it would at least be 29 3/8th wide ,but I'm wrong most of the time.

[DG Racing]

its because nobody make them for 3600 frame , and i never trust manual

Its alway better to have the real measurements , so this forum is the best place to have the exact info .

From a good measuring tape

[OrrieG]

This should help, shows specs for the different frame sizes.

http://chevy.oldcarmanualproject.com...esto/56134.htm

[DG Racing]

thanks you Orrie G
so if i look at the specs for the frame rails
3100 is 2.260 inch wide and 3600 is 2.250 so a 3/4 frame is .010 smaller.
3100 is 6.00 depth and a 3600 is 6.090 so a 3/4 frame is .090 taller
3100 is .140 thick and a 3600 is .190 thick so a 3/4 frame is .050 thicker

So i can confirm that my 1957 3600 frame is exact those spec.

But there is one thing i just notice :
is that a 1957 1/2 ton long box (3200)
as a 3/4 ton FRAME
So if somebody can just mesure is 3100 frame to confirm the manuel
it will be a very good info for future reference
thanks

[kaycee]

I did measure and it is what it is

[DG Racing]

I just received another confirmation and yes
a 3100 its 29 1/2 between front rails

So i have to call the seller now

Thanks everybody for your help