A body torsion bars?

Anyone use /6 bars on a street/strip small block A body? It weighed #1740 on the front with a factory block, it now has a R1 block so it's probably a little heavier.

The reason I ask is that the bar on the passengers side seems to have lost it's strength. If I adjust the drivers side it shows up in the ride height on the corners. The passengers side when adjusted moves very little. So I'm wondering if I need /6 bars or 273/318 bars.

Thanks, Justin

I used some very thick circle track bars (all I had) on a DD 65 dart SB with 002/003 SS springs (came with the springs as a roller) & it rode flawless

I did a few different setups on my 72 demon- the solo road race type 1.06 or something cornered flat and gave great road feel even just with KYB shocks but the chassis would outperform the interior- stock bucket seats didn’t hug my butt enough to keep from holding the wheel to keep from getting thrown into the passenger seat. Lotta fun though.

/6 bars with comp 90/10 shocks were also fun- they drove fine for cruising and definitely let the nose come up on a hard launch.

I never did get the car to hook at the track and the one time I threw some 10.5 phoenix slicks on it I shattered the driveshaft and decided feeding parts to a stickshift 1/4 mile car is for somebody with deeper pockets than mine!

Regular v8 bars from the original 1972 H-code 340/4spd setup rode fine but I was into tinkering with the car’s personality.

If you're racing the thing and need the car to pitch rotate, a smaller diameter bar, wound up to hold the car at ride height, will help. Good shocks can be used to control the movement. If it's not that serious, I would probably be careful not to get too small with them.

Measuring is the best way to determine what you have. .81 diameter is the drag race only MP bar. .83 is 6cyl, .85 and .87 are 318 & 340 V-8 bars. .89 is a big block bar.

They will get weak and sag. Using scales when adjusting them will help get them right and catch a weak bar.

Make sure you don't have a broken mount. Also, I have the .810" bars in my 340 Duster and I really had to crank the adjusters in to get it to hold ride height.

I am running /6 bars in my 68 Barracuda. It has an R1 Block with W2 heads and a tunnel ram so as far as small blocks go it can't get much heavier. I have probably 6-8000 miles on them and they are still doing good.

Years ago I tried some acid dipped /6 bars my dad had and I couldn't get the jack back out lol.

Thanks, that what I was looking for.

6 cylinder bars work great but they have a cycle life like any spring. They wear out. Just replace them.

Somewhere I read that the 6 cyl. and 318 bar size goes up one size when they have A/C.


Torsion bar sizes.

I ran the .810 bars in my Dart w/a BB for years till they were sagging then my friend grabbed me a pr. of .830-.840 bars iirc from the junk yard and have been running em ever since . 1.33 60 ft and lots of street miles............

certain year 6cyl with A/C is the same bar as a 318 car .830?

My moms 1974 Dart Swinger with a /6 auto air conditioning had the 0.850 bars. I put them in my 65 Cuda when I pulled the 0.089 bars that one was sagging.