Subframe connectors needed or not?

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Brennan

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How much hp/torque can a 67 A-body take before really needing subframe connectors? I don't plan to hit the drag strip a lot, but I think it only takes one shot to bend it if it hooks hard enough.
If recommended... What aftermarket BOLT in type do you guys recommend? I know weld in ones are better, and I may do a bolt/weld in combo. I really don't want to pull the seats and carpet just yet.
 
Subframe connectors should be a priority mod at any power level. They simply make the car better.

You can get the mopar (order them from any local dodge dealer) bolt-ins for not much money and weld them later.
 
I welded mine in frame to frame with the carpet/interior still in,just had a bucket of water ready.No problems.
 
The bolt in type from the dealer. Do you by chance have a part# or how do I ask the counter guy for them? They seem to need part#s for any thing older than '84 these days.
 
Relax360 said:
while bolt in connectors are a good first step nothing beats a good pair of weld in connectors. US Car Tool makes weld in connectors that look like they were put in by the factory. I will be using on my notchback in a few weeks. here is they link

http://www.uscartool.com/Bframeconn/index.html

Brad
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I'm thinking about using those myself, let us know what you think.
 
Subframe connectors are mandatory! A little test you should do is to go to a local shop with a two post lift and have them raise your car up. Look at the door gaps and watch in amazement!
 
Us Car Tool Looks like they belong:
DSC01798.jpg


DSC02189.jpg
 
So you're saying the bolt in type simply aren't worth the effort, or, they are only good for so much torque, i.e. if you go more than 400 lb ft you definitely want the fully welded ones? I ask because I'm considering a 360 magnum crate motor, it puts out 320 hp/400 lb ft. I don't mind the welding, it's just the carpet seats etc. hassle. I saw above somebody did it with the carpet in, I also have dyna mat, am afraid it'll catch fire.

Brian
 
Rbob said:
Us Car Tool Looks like they belong:
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hard to get them that nice doing it from underneath laying on your back

Abodysrule said:
I don't mind the welding, it's just the carpet seats etc. hassle. I saw above somebody did it with the carpet in, I also have dyna mat, am afraid it'll catch fire.
Brian
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i would not do it with the dynamat and carpet installed. even the jute backing on just the carpet would make me hinky
 
Brennan said:
How much hp/torque can a 67 A-body take before really needing subframe connectors? I don't plan to hit the drag strip a lot, but I think it only takes one shot to bend it if it hooks hard enough.
If recommended... What aftermarket BOLT in type do you guys recommend? I know weld in ones are better, and I may do a bolt/weld in combo. I really don't want to pull the seats and carpet just yet.
Click to expand...
Record setting NHRA Stock Eliminator A Bodies dont use them.
 
I am in the process of installing the US Car Tool connectors. Taking out the seats and carpet wasn’t the hard part.
 
I'm not convinced they help much but would add something.It's like adding two more studs to a wall.
I would add torque boxes first...nothing as strong as a triangle.
I can hear the gasps and murmurs!
 
how much power are you making and are you running a drag radial or slick?
 
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12 flat or faster they are mandatory. But the torque boxes and sub frame connectors sure make a solid vehicle. If you are going to make 320 hp you don't really need anything but even in a accident they will make a big difference. If you can do it now it would be best because of future changes and the safety aspects. Also if it's a stick car or you are ever going to run slicks add a driveshaft loop.
 
OK, this is actually very useful input. I am not ever going to use slicks or do hard pounding burn outs. I'm more of the highway or already at 30 mph kick it down and maybe catch second gear kind of guy. i'll likely install the bolt on (some welds) type for insurance, but likely that'll be overkill for my application.
 
I't always been my opinion that Chrysler should have tied the front and rear frame sections together.
 
Subframe connectors may not be required but they are one of the most noticeable improvements you can make to an A-body. A car just feels so much better with them installed. The doors close more solidly and the car is just more solid and nicer. Do it!
 
ir3333 said:
I'm not convinced they help much but would add something.It's like adding two more studs to a wall.
I would add torque boxes first...nothing as strong as a triangle.
I can hear the gasps and murmurs!
Click to expand...

I think your right, since the rockers are the frame connectors, torque boxes adds strength to the connection and is how the factory dealt with it. Like to see a shootout between the two see which one helps the best. Probably an X weld in frame connector would be better just would make hanging exhaust a lot harder though.
 
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