Torsion bar length and size?

[Moparal]

My car was a 70 318 4spd e body.   It has the stock bars on it now with a 440 and seems to be doing ok

I was in my shed today and found some 69 383 road runner torsion bars.  I didn't look for a part #. I just know I took these off a stock RR  and got the 8 3/4 to.

Are they the same length?  Should be bigger to huh?  Not really wanting to do front end work, but I will if I have to.  I don't want to end up with a broken bar

[72bluNblu]

The B body bars were the same length as the e-body's from '62-72, 41". Not sure about the diameter though, I would think it would be larger since the big block b-bodies were heavier than small block e-bodies, but that's no guarantee.

[Supercuda]

The '69 RR t-bar is thicker than a 1970 E-body 318 bar. In a road test of a car with the 318 bars and the "hot" engine, the road tester thought it resulted in a better car, with more road manners than the Challenger with the R/T suspension, with little penalty in handling. I noticed a comfortable ride in my '67 with the smallblock torsion bars, but was not thrilled with the soft leaf springs in back. If you want a little more compliance from the suspension, and don't mind a little lean in the corners, the 318 bars will be fine. Just a thought, though: radial tires soften the blows in a firm suspension, and can help make a pretty stout handler feel like it has a softer suspension, when it isn't being "worked". Although my suspension includes Super Stock leaf springs, and the biggest MOPAR bars I could get for the A-body, it isn't as harsh as I thought it would be. I think the difference is in the use of radial tires. They're your kidneys, Al; what's your pleasure?

[Chryco Psycho]

the RR bars shpuld be 778 /779 , which is definatly bigger then the 318 bars , the bars should be marked on the ends . Make sure the odd number to the left side
 Yes they are the same length as as 72 Blu said

[HP2]

According to the chassis book, the Road Runner has .90 bars while the 318 Barracuda has .86, so your looking at an increase in spring rate by changing.

[PistolGrip440-6]

Al was it an A/C car? Ive heard from a few people that a 318 with A/C has 383 bars. Lots of guys actually run the small block bars with big blocks for better weight transfer, I havent heard of broken bars but the guys who get really crazy and try /6 bars sometimes run into trouble.

My Satellite is a 273 car, still has it in it but not for long. It rides nice but man does it roll in the turns, alot of that is the 41 year old 4 leaf springs in the back, sits too low in the back but just right in front. I think im going to keep the small block bars for a while.