Gm x frame 59-?

Trying to find out what years that share frames with my 60 El Camino? I have been researching but cant get a definite answer. Looking for a frame to build while i drive my elky.

Also, what are your suggestions for stiffening an X frame?

 

64 impala is an x frame

 

1960 would be Your best bet, as there are variances between model years. For what purpose do You feel it needs to be stiffened...?

 

x frames through 64, most went perimeter in 65
you can wrap your frame, ie lowriders/hoppers to stiffen it up, or make your own new perimeter frame rails, and floors...

 

Looking to stiffen it for safety and handling. I know the x frames ran until 64 but what years are the same body mounts etc. for a 60? I got a caddy 472 with the deal for the el camino and am thinking about putting it in.

 

59-60.

 

59-60 Impala/Bel Air frames are the same
61-64 Impala/Bel Air frames have minor differences but will work on a 59-60 body.
Remember, the 59-60 El Camino uses the heavy duty wagon frame.

 

my 59 elky has a 62 impala frame. all the body mounts line up except the rear ones.

 

1958 - 1964, all of the fullsize GM's had 'em. Need some parts or info Evan? Gimme a call. Thinking about selling my '60 Bel Air two door post.

 

Also, I copied two articles a long time ago about stiffening these ch***is. One from a drag racing mag, the other from Lowrider Mag. If anyone knows how to twist a frame it's these two groups!

 

I had a 59 with a 396 and a 4 speed and a 4.11 rear gear. I had to replace the rear with a ford 9" (the stock rear lasted a whole week). And I had to beef up the upper control arm mounting. I ripped it right off of the frame. The 61-64 were a 4 link and I was allways going to upgrade the 59 but sold the car....

 

I just used a 60 4 dr frame under my 60 Elky....all mounts and bushing's lined right up

 

This era was the last few years where the makes all had their own ch***is and suspension with little shared across makes.

X-frame cars are 59-60 Chevy, Pontiac and Cadillac; Chevy continues through '64. I'm not sure what 61-64 Cadillac used, but each make's '59-'60 frame were different - Chevy was 115" wheelbase; Pontiac 121" and 123" and wide track; Cadillac still longer; Olds used the X-frame but with added perimeter rails, and Buck isn't an X-frame at all but a perimeter frame with a K-shape crossmember.

I believe the 61-64 Buick, Olds and Pontiac then share a similar ch***is, which while well designed was rot prone. Either way not an X-frame.