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-   -   Anti-Roll Bar (https://classracer.com/classforum/showthread.php?t=85684)

Dan Fahey 09-06-2023 01:21 PM

Anti-Roll Bar
 
Running 1995 Caprice in J/SA

Launches hard with left front coming off ground.
Right side barely stays on ground.
Want to stop the twisting.

Are Anti Roll Bars Legal in Stock?
Current solution using Double Adjustable Shocks.
Using Dick Miller components including Suspension Brace.

It wants to launch harder.
Too high a Launch rpm breaks tires loose.


Dan

Billy Nees 09-06-2023 01:25 PM

Re: Anti-Roll Bar
 
Quote:

Originally Posted by Dan Fahey (Post 685634)
Are Anti Roll Bars Legal in Stock? Dan

Yes but legally they can't be welded to the frame. They must be bolted.

Jim Kaekel 09-06-2023 02:32 PM

Re: Anti-Roll Bar
 
Billy is correct, must be bolt-on only. I like the H&R Parts 'n' Stuff bar. It may be difficult to find one for a GM "B" body.

Jeff Stout 09-06-2023 04:39 PM

Re: Anti-Roll Bar
 
Right rear air bag? Just thinking out loud.

GUMP 09-06-2023 05:15 PM

Re: Anti-Roll Bar
 
A stiffer passenger side rear spring will help some.

Dan Fahey 09-06-2023 09:49 PM

Re: Anti-Roll Bar
 
Has SS Roll bar and Airbags.

Stiffer Roll Bars are available and bolt on.
Double Adjustable Shocks are next.

MAURICE BLENDHEIM 09-07-2023 01:02 AM

Re: Anti-Roll Bar
 
Dan… Like previously mentioned add some spring to the RH Side. Try a "Cargo Coil" (Lesjofors 4412114) or a Wagon Spring (Dorman 566208). Could be a simple low cost fix. MB

Terry Cain 09-07-2023 01:40 AM

Re: Anti-Roll Bar
 
bolt in ladder bar/torque bar, drivers side. LONNNNNNNG

Damn. Not sure where my head was. Passenger side. Mark has a point. No longer than OEM BUT (a little hint) it can be tied into Roll bar.

Henrys Toy 09-07-2023 05:50 AM

Re: Anti-Roll Bar
 
Quote:

Originally Posted by Dan Fahey (Post 685668)
Has SS Roll bar and Airbags.

Stiffer Roll Bars are available and bolt on.
Double Adjustable Shocks are next.

Good morning Dan and to all,
I was going to suggest a quality set of shocks, they aren't going to be cheap but I'm sure will be worth it allowing you the ability to "tune " your suspension. Another thing that comes to mind is to make sure all your suspension components are "free to move" and the front and rear wheels are all heading in the same direction. I believe if you allow the suspension to work / move that you should be able to leave at a higher RPM, and pick up some ET, and not spin the tires. Years ago I bracket raced a 1962 Impala with a coil suspension, and I found found once I freed up the suspension and allowed free movement, I was able to leave around 4500 rpm. The car had 9x30 firestone slicks and a 350 chevy engine. Nothing fancy by todays standards. I hope this helps , if you have any questions I'll be a the Grove for the Dutch Classic. Good luck.

Respectfully,
Henry Kunz 1534 H/SA

Mark Yacavone 09-07-2023 01:29 PM

Re: Anti-Roll Bar
 
Quote:

Originally Posted by Terry Cain (Post 685678)
bolt in ladder bar/torque bar, drivers side. LONNNNNNNG

Not legal. Lower pivot point can't be any further forward than OEM.

Dan Fahey 09-07-2023 02:03 PM

Re: Anti-Roll Bar
 
Thanks for the Advice

Have SS Rear and Front Springs, they are stiff.

When I bought the car new in 1995.
Took the car to Summit Point for Road Course practice.
Stayed with just about everything in the curves.
Straightaways were ok! Used up set up Front Disks.

The SS Roll Bar is 1.06 inch Diameter.
Trick Chassis makes a complete Anti Roll Bar set up, 1.56 dia.
Requires welding but says it can be bolted in.

Spohn makes a replacement SS Roll Bar from 4140 Chrome Moly.
36mm/1.496 inch diameter, 1/2 inch larger in diameter.

chris ok 09-08-2023 07:19 AM

Re: Anti-Roll Bar
 
I’ve used the H R Parts rear bar for over 15 years. On a 1970 Chevelle. Fully bolt in and easily adjustable. I don’t know the rear cross member in front where the trailing arms bolt up but the A body unit may fit. Someone must have tried this by now. Give them a call 3309472433. I know a few more companies offer them. TRZ and maybe BMR among others. Chris

Dan Fahey 09-08-2023 01:04 PM

Re: Anti-Roll Bar
 
Quote:

Originally Posted by chris ok (Post 685757)
I’ve used the H R Parts rear bar for over 15 years. On a 1970 Chevelle. Fully bolt in and easily adjustable. I don’t know the rear cross member in front where the trailing arms bolt up but the A body unit may fit. Someone must have tried this by now. Give them a call 3309472433. I know a few more companies offer them. TRZ and maybe BMR among others. Chris

The B-body suspension is identical to your 1970 Chevelle.
Same GM Chassis since 1964.

Our B-Bodys are the last of the full frame Muscle Cars of the late 60's early 70's.

Mark Yacavone 09-08-2023 10:31 PM

Re: Anti-Roll Bar
 
Quote:

Originally Posted by Dan Fahey (Post 685770)
The B-body suspension is identical to your 1970 Chevelle.
Same GM Chassis since 1964.

Our B-Bodys are the last of the full frame Muscle Cars of the late 60's early 70's.

64 Chevelles had an 8.5 rear ,with metric bolts?
'Fraid not !
77 and newer down sized full size were similar, being metric , but not all of the parts interchange with the SS.
Might look like a 64 Chevelle , to the uninformed.

ernneal2 09-29-2023 08:26 AM

Re: Anti-Roll Bar
 
I feel ya on this! We have a right rear airbag and tried a anti-roll but it didn't really like it. It leveled the car out but 60 ft was slower. I felt like it was binding something up and it could have been how we had it in there. Ours is happier when its twisting a little. I have double adjustable shocks. I need to start playing around with them a little more.

Dan Fahey 10-02-2023 02:50 PM

Re: Anti-Roll Bar
 
Quote:

Originally Posted by ernneal2 (Post 686741)
I feel ya on this! We have a right rear airbag and tried a anti-roll but it didn't really like it. It leveled the car out but 60 ft was slower. I felt like it was binding something up and it could have been how we had it in there. Ours is happier when its twisting a little. I have double adjustable shocks. I need to start playing around with them a little more.

I bought a thicker Roll Bar from BMR...
Stock was longer and 1 inch diameter.
Good enough for Friday at the Track for road racing and autocross.

At VMP Div1 this weekend installed the 1.5 inch BMR.
It was a good bit heavier and stiffer.
Typically weigh 3940/3950, with new bar heavier 3990/3980lbs.

Car felt more responsive and twisted less.
Need to get some pictures.

D


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