1.06" or 1.12" FF Torsion Bars, Street
#2436745
01/18/18 09:54 AM
01/18/18 09:54 AM
|
Joined: Jan 2003
Posts: 5,444 Indiana
YO7_A66
OP
master
|
OP
master
Joined: Jan 2003
Posts: 5,444
Indiana
|
I am looking into upgrading my .92" torsion bars on my 70 Challenger. 340/727,P245-60-15 & P275-60-15 tires, stock front sway bar & 3/4" rear, Viking DA shocks. Rear springs are the #3400043 (6 leafs) on both sides. This is a street car and I plan on sticking with the 60 series tires which I assume will help absorb some of the stiffness of a larger torsion bar. I am looking at the FF 1.06" or the 1.12" bars. I do not have any extra stiffening brackets and I don't want to add them unless needed. We have a lot of curves (round-a-bouts) and fairly smooth roads after the pot holes are filled each year What do you suggest? http://www.firmfeel.com/e_body_mopar_torsion_bars.html Thanks!
1970 YO7 A66 [Canadian Export] F8 Challenger 340 (Currently in shop for stroker assy.)
|
|
|
Re: 1.06" or 1.12" FF Torsion Bars, Street
[Re: YO7_A66]
#2436802
01/18/18 01:04 PM
01/18/18 01:04 PM
|
Joined: Jan 2005
Posts: 4,432 Michigan
MarkZ
Worthy
|
Worthy
Joined: Jan 2005
Posts: 4,432
Michigan
|
I have 300# rate springs in the front of my car, so something akin to a 1.14 bar. I ran a 60 series tire upfront for a year with those springs and loved how it handled. Wasn't too harsh at all and really leveled the car out in turns. I wish I could have gone bigger, but FF only offers one style bar for the F/J/M cars. If it were me, keeping the 60 series tires, 1.18 all day.
1987 Fifth Avenue - 512/518/D60
|
|
|
Re: 1.06" or 1.12" FF Torsion Bars, Street
[Re: MarkZ]
#2437114
01/18/18 09:29 PM
01/18/18 09:29 PM
|
Joined: Jan 2003
Posts: 5,444 Indiana
YO7_A66
OP
master
|
OP
master
Joined: Jan 2003
Posts: 5,444
Indiana
|
Mark, I never considered any larger than the 1.12" for a street car. But I keep reading more about people running them and liking the ride. Thanks
1970 YO7 A66 [Canadian Export] F8 Challenger 340 (Currently in shop for stroker assy.)
|
|
|
Re: 1.06" or 1.12" FF Torsion Bars, Street
[Re: moparAL]
#2437153
01/18/18 11:01 PM
01/18/18 11:01 PM
|
Joined: Jan 2003
Posts: 5,444 Indiana
YO7_A66
OP
master
|
OP
master
Joined: Jan 2003
Posts: 5,444
Indiana
|
Al, I already have DA shocks and I checked the H websight and only found 1.03” for my Challenger. Thanks
EDIT: just found the 1.1's on Jegs. 👍
Last edited by YO7_A66; 01/18/18 11:45 PM.
1970 YO7 A66 [Canadian Export] F8 Challenger 340 (Currently in shop for stroker assy.)
|
|
|
Re: 1.06" or 1.12" FF Torsion Bars, Street
[Re: YO7_A66]
#2437178
01/18/18 11:49 PM
01/18/18 11:49 PM
|
Joined: Jan 2003
Posts: 5,444 Indiana
YO7_A66
OP
master
|
OP
master
Joined: Jan 2003
Posts: 5,444
Indiana
|
After I started this thread, I contacted FF for their suggestion. FF suggested the 1.06" for spirited driving and ride compromise. FF said that the 1.12" are for racing and might be too harsh on a street car.
I am still looking for opinions from those who are driving on 60 series tires. Thanks everyone!
1970 YO7 A66 [Canadian Export] F8 Challenger 340 (Currently in shop for stroker assy.)
|
|
|
Re: 1.06" or 1.12" FF Torsion Bars, Street
[Re: Jerry]
#2437205
01/19/18 12:17 AM
01/19/18 12:17 AM
|
Joined: Jan 2003
Posts: 5,444 Indiana
YO7_A66
OP
master
|
OP
master
Joined: Jan 2003
Posts: 5,444
Indiana
|
Jerry, I have not heard of that company before. They show 1.08" in stock. Thanks
1970 YO7 A66 [Canadian Export] F8 Challenger 340 (Currently in shop for stroker assy.)
|
|
|
Re: 1.06" or 1.12" FF Torsion Bars, Street
[Re: YO7_A66]
#2437244
01/19/18 01:05 AM
01/19/18 01:05 AM
|
Joined: Jan 2003
Posts: 5,444 Indiana
YO7_A66
OP
master
|
OP
master
Joined: Jan 2003
Posts: 5,444
Indiana
|
I just spent some time searching E body torsion bar sizes on the web. I took a few screen shots of people writing that when running 60 series tires and a SB, and GOOD shocks, that the 1.12"-1.18" bars are still comfortable on the street!! It appears that the 60's absorb some of the road texture. I also read that the difference between the .9" and the 1.06" bar is not that noticeable.
1970 YO7 A66 [Canadian Export] F8 Challenger 340 (Currently in shop for stroker assy.)
|
|
|
Re: 1.06" or 1.12" FF Torsion Bars, Street
[Re: crash520]
#2437344
01/19/18 09:01 AM
01/19/18 09:01 AM
|
Joined: Jan 2003
Posts: 5,444 Indiana
YO7_A66
OP
master
|
OP
master
Joined: Jan 2003
Posts: 5,444
Indiana
|
RP: excellent reference! It looks like the 1.12” is on the high end for my setup. Thanks
Crash: is this a 70-74 Cuda? What series tires and shocks? Is this a race or street car? Thanks
1970 YO7 A66 [Canadian Export] F8 Challenger 340 (Currently in shop for stroker assy.)
|
|
|
Re: 1.06" or 1.12" FF Torsion Bars, Street
[Re: RylisPro]
#2437362
01/19/18 10:52 AM
01/19/18 10:52 AM
|
Joined: Jan 2003
Posts: 5,444 Indiana
YO7_A66
OP
master
|
OP
master
Joined: Jan 2003
Posts: 5,444
Indiana
|
RPro, 245’s up front & oversteer: Is this due to the 1.12” bars and my existing stock front sway bar? Thanks
1970 YO7 A66 [Canadian Export] F8 Challenger 340 (Currently in shop for stroker assy.)
|
|
|
Re: 1.06" or 1.12" FF Torsion Bars, Street
[Re: geo.]
#2437399
01/19/18 12:31 PM
01/19/18 12:31 PM
|
Joined: Jan 2003
Posts: 5,444 Indiana
YO7_A66
OP
master
|
OP
master
Joined: Jan 2003
Posts: 5,444
Indiana
|
Geo,, What type of shocks are you running? Thanks
1970 YO7 A66 [Canadian Export] F8 Challenger 340 (Currently in shop for stroker assy.)
|
|
|
Re: 1.06" or 1.12" FF Torsion Bars, Street
[Re: YO7_A66]
#2437531
01/19/18 04:01 PM
01/19/18 04:01 PM
|
Joined: Jan 2010
Posts: 1,442 NW Chicago suburban area
Mopar Mitch
pro stock
|
pro stock
Joined: Jan 2010
Posts: 1,442
NW Chicago suburban area
|
Yo7 -- Your car is similar to mine Get the 1.12 or larger you won't regret it. FF has 1.18 also avlbl (their 1.06 is too weak.. forget about them)... even at 1.12 or 1.18 you'll wonder why not going a bit stiffer. Your big advantage is already having dbl adj shocks.. to fine tune your ride.
For the street (actually... highway) I run 15x8 minilite rims with BFG 255-60 and 275-60 (previously ran fronts 245-60.. but wanted a touch more ground clearance and bump absorption).. having a lowered suspension.. with my 1.24 TBs.... ride is just fine... stiff but not harsh or jaw breaking in any way. Adjustable red Konis.. full stiff front, ~1/2 stiff rear with 225# Flex-a-form mono-fiberglass leafs, 1.25" front sway bar, 1.0" rear sway bar. I also have 16" rims and short profile tires for track events.. street/hwy ok as well.
I've lowered the rear of the car as well, so there isn't as much of rake that introduces understeer with the different size tires...with the 275 rear tires there is only a slight rake, but then I typically have some items for cruising in trunk, etc... leveling off the height.
Hope this info is helpful to you.
PS: FF will make larger TBs upon request, such as 1.24 which is the max diameter to fit through the factory hex opening. The pro-TransAm e-bodies actually ran larger TBs.. around 1.44 diametar using different hex openings... so, the 1.24 TBs which I have (and a few other ppl I know) actually aren't that much stiff as many ppl think.
Last edited by Mopar Mitch; 01/19/18 04:03 PM.
Mopar Mitch
"Road racers and autocrossers go in deeper and come out harder!"... and rain never stops us from having fun with our cars... in fact, it makes us better drivers!
Check out MOPAR ACTION MAGAZINE, August 2006 issue for feature article and specs on my autocross T/A!
|
|
|
|
|