I know this is an A-body forum but I have a 1974 B-body question

[High_Cap]

I have a few questions on the 1974 Roadrunner suspension setup.  I believe the K-member is a different style like a rubber mounted one. Please anyone correct me if I am wrong.
This is what a suspension expert told me about the 1974 B-Boday frame.  He said since it is rubber mounted that subframe connectors will not help.  That only extensive modifications will help the handling and the body twist under acceleration.   Hopefully someone can give a little insight into this one cause I am lost.  Or what are some things people have seen to beef up these frames on these year mopars.

Thanks in advance.

[Jim_Lusk]

I believe that is true about the rubber isolation. At some point in time there were solid aluminum isolators available. I would still think SFCs would help, though, just not as much as on a car with a solid bolted-in k-member.

[cu440da]

Find another suspension expert, cause this guy is feeding you a line of BS.

Yes, the front kframe is rubber isolated. There are stiffer inserts available (even cast alum) that will firm up the steering response and feel.
The subframe connectors would be a great help, because they adress the very issues he says they don't effect.

The above mods are really all you'd need to do on a street/strip car.
"Extensive mods" are not needed unless you're talking about an all out XV Motorsports package designed to out handle just about any car ever made.

[Bill_Reilly]

Yep, frame connectors are valuable - the car body flexes regardless of suspension, so you should address that and add the connectors. And after seeing lots of suspension tests here, finding or making aluminum replacements for those rubber isolators will go a LONG way to make the car more responsive.

...Although, if you wait a year, I'll some fun stuff to get rid of that suspension. Probably expensive though...