73/74 RR Torsion Bar Question and Opinions

[DeltaV]

It is 1 1/4” sway bar.

So, you'll have 1-1/4" up front and 1" out back.

Good.

 

[RR Fan Dan]

So, you'll have 1-1/4" up front and 1" out back.

Good.

Actually when you said that I looked at my Jegs order for the rear to confirm. It's actually 3/4”, according to the description on the order. It won’t show me product details because it is out of stock. I think I bought the last rear sway bar in the country for a 74/74 b body.

 

[DeltaV]

If it were me, I'd replace those with at least the poly biscuits if not the metal ones.

Totally agree.

I’m thinking about leaving the rubber isolators in place.

No. At a minimum, go with the poly biscuits.

 

[DeltaV]

It's actually 3/4”

You've been throwing out a lot of wrong numbers lately.

A 3/4" rear sway bar is good too.

 

[DeltaV]

So, what are you doing with the leaf springs and associated mountings?

 

[RR Fan Dan]

You've been throwing out a lot of wrong numbers lately.

I know, I’ll try to get better. Like I said Jegs won’t let me see the details page so I pulled what I thought was the same kit I bought off another site. Apparently it came in different sizes. Or maybe it didn’t. I was so happy when I found it I just hit buy and didn’t pay much attention to what size it was and now Jegs won’t let me go back and see what I bought. This is all I get for a description. When you click the link it says item not available.

 

[DeltaV]

I know, I’ll try to get better. Like I said Jegs won’t let me see the details page so I pulled what I thought was the same kit I bought off another site. Apparently it came in different sizes. Or maybe it didn’t. I was so happy when I found it I just hit buy and didn’t pay much attention to what size it was and now Jegs won’t let me go back and see what I bought. This is all I get for a description. When you click the link it says item not available.

Picture with home address deleted.

I deleted your picture. Blot out your personal info (name and address) and add it to your reply above.

 

[RR Fan Dan]

I'm not sure why you're comparing a sway bar diameter to a torsion bar diameter.

Just as a reference.

So, what are you doing with the leaf springs and associated mountings?

Nothing yet. I figured the RR got the HD so they would be fine.

 

[RR Fan Dan]

Totally agree.


No. At a minimum, go with the poly biscuits.

Won’t that make my teeth rattle

 

[DeltaV]

Won’t that make my teeth rattle

Don't select really "stiff" shocks if you're concerned about rattling your dentures.

Matt should be able to help guide you with the shocks for your setup.

 

[DeltaV]

I know, I’ll try to get better. Like I said Jegs won’t let me see the details page so I pulled what I thought was the same kit I bought off another site. Apparently it came in different sizes. Or maybe it didn’t. I was so happy when I found it I just hit buy and didn’t pay much attention to what size it was and now Jegs won’t let me go back and see what I bought. This is all I get for a description. When you click the link it says item not available.

View attachment 1947144

The Addco website will tell you what diameter for their p/n 20-236. That's their part number.

 

[RR Fan Dan]

Don't select really "stiff" shocks if you're concerned about rattling your dentures.

Matt should be able to help guide you with the shocks for your setup.

I got the Bilstein RCDs for the rear. I had them on my 68 and liked them. For the fronts I got the KYB excels, because the LCAs needed to be modified to fit the matching Bilstein for the front.

 

[DeltaV]

I figured the RR got the HD so they would be fine.

Not sure what you mean. Your car originally had a 318 and now has a 440. Was the rear axle and suspension changed with the engine change? Prop shaft came from a what?

 

[RR Fan Dan]

Not sure what you mean. Your car originally had a 318 and now has a 440. Was the rear axle and suspension changed with the engine change? Prop shaft came from a what?

All RR got the upgraded HD leaf springs. Remember in 74 the RR was a satellite option, not a stand alone.

 

[RR Fan Dan]

Prop shaft came from a what?

I’m not sure what this means.

 

[RR Fan Dan]

Was the rear axle and suspension changed with the engine change?

All RR in 74 got the 8.75. Stock axle. Gears were changed to 4:10’s, probably going back to 3:23 or 3:55. Depends on motor rebuild.

 

[DeltaV]

I’m not sure what this means.

Sorry...driveshaft.

"Prop shaft" is in the FSM and other factory documentation.

 

[HawkRod]

You mean like these? Firm feel has them and the body mounts. I’m on the fence about using them. Most all of comfort will have been removed and upgraded with HD and urethane. I don’t want an entirely rigid ride. I’m thinking about leaving the rubber isolators in place.
View attachment 1947105

In my 73 Road Runner, I replaced the rubber bushings with polyurethane. Part of me wants to be cautious about using steel inserts to replace them, but then again, my 70 is mounted solid to the body and I have no issues.

At any rate, when I drove my 73 cross country both ways it drove and handled nicely with the polyurethane busings. But quite frankly, I believe one of the best improvements in ride is to stiffen the chassis with subrame connectors, etc.

 

[RR Fan Dan]

The Addco website will tell you what diameter for their p/n 20-236.

No they don’t match up. Here is the 0.75 bar I got on their website.

They also have a 1” that fits my car. That’s what caused all the confusion on what size I actually got from Jegs, cause I couldn’t cross reference the Jegs part number. Dang Jeg Cofflin, I like Mike Anderson better but his website is slow.

 

[RR Fan Dan]

But quite frankly, I believe one of the best improvements in ride is to stiffen the chassis with subrame connectors, etc.

I got those as well, so I will probably stay with the rubber iso bushings on the body and cross member. After all one of the big selling points for the 73/74 was the new quieter smoother ride. Nice car BTW.