1967 impala sway bar issues - Impala Tech
 
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post #1 of 20 (permalink) Old 03-13-2018, 01:16 AM Thread Starter
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1967 impala sway bar issues

Hello all,
I have a 1967 impala convertible with tubular front global west uppers and lowers.
Installed a Hellwig sway bar #5713 - 1 1/8 thick.
I was able to run the sway bar thru the frame and connected the end links with no problems.
However, the U shape frame brackets do not line up when installed with bar. They do do line up to frame holes without the bar.
The rear hole on frame is off about 1/2 inch.

I called Hellwigs rep, he said i had the right Bar for my year #5713. Also said no one has ever called them with this issue.
The Hellwig instructions do not say anything about drilling another hole on frame.

Has anyone else with 1965-70 impalas ran into this issue with the front bar?

Does the Addco #864 bar fit better ?

I feel like that bracket should be twisted a bit like the original from the 7/8 bar.
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post #2 of 20 (permalink) Old 03-13-2018, 01:23 AM Thread Starter
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Photos of bracket
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post #3 of 20 (permalink) Old 03-13-2018, 01:32 AM Thread Starter
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65-70 sway bars 7/8. - 1 1/8
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post #4 of 20 (permalink) Old 03-13-2018, 09:28 AM
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Problem isn't so much with the bar as the polyurethane bushings and the clamping method. I had the same issues with a Hotchkiss bar on my '85 Impala and had to fabricate a new clamp with through holes and grade eight bolts and nuts. In a corner the forces generated will pull the self threading screw out of the frame as there isn't a lot of meat holding it in place. At least that is what I discovered when autocrossing my car.

Big Dave
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post #5 of 20 (permalink) Old 03-13-2018, 02:36 PM
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Actually there are 2 different front sway bars. The std suspension has an 11/16 dia bar. While the HD F41 susp has a 15/16 dia bar. Doesn't surprise me at all having problems going to a 1-1/8 bar.
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post #6 of 20 (permalink) Old 03-13-2018, 10:15 PM
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I have the Addco bar, not sure the model or thickness - but definitely not stock sized! I had (have) the same bracket mounting issue.

There was a similar thread on this issue in just the last 2 months. A quick search can probably find it with what I imagine is the same the same outcome.

HOW A NOVICE REBUILDS A 66 IMPALA CONVERTIBLE:
http://www.impalas.net/forums/blog.php?u=1432
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post #7 of 20 (permalink) Old 03-18-2018, 04:18 AM Thread Starter
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Thank you guys for your feed back.

sz0k30, I dont have my original bar anymore but i wrote down my measurement as 7/8".
Can anyone else chyme in on this, what size was a standard size front swar bar for 65-70 impalas.

BA, I went ahead and got an Addco bar to test out for fitment.
Same result.

A few things to note:
The hellwig bar measures about 41 7/8" from center to center of holes.
The Addco measures 42" .
Measurement for my original was also 42".

Hellwigs bracket and endlink kit looks more befier.

Also, hellwigs bar is easier to install.
Maybe because of the S" bend at ends.

Either way, i recommend to remove the drivers side wheel and strut bar for ease of install/removal.
You will also notice the hole on frame is larger on the drivers side.

See photos..
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post #8 of 20 (permalink) Old 03-18-2018, 04:21 AM Thread Starter
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Adcco bar and Hellwig bar photo.
Hellwig on left/ Addco on right.
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post #9 of 20 (permalink) Old 03-18-2018, 04:23 AM Thread Starter
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Matching up the holes.
Hellwig bar is a bit shorter..
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post #10 of 20 (permalink) Old 03-18-2018, 04:25 AM Thread Starter
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Close up
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post #11 of 20 (permalink) Old 03-18-2018, 04:29 AM Thread Starter
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Addco bar installed.
Bracket still does not line up with original holes on frame.
I placed blue tape on original hole to contrast.
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post #12 of 20 (permalink) Old 03-18-2018, 04:35 AM Thread Starter
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Addco bar connected to end link..
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post #13 of 20 (permalink) Old 03-18-2018, 04:37 AM Thread Starter
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Difference in hardware.
Hellwigs bracket and bushing are thicker.
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post #14 of 20 (permalink) Old 03-18-2018, 04:41 AM Thread Starter
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Frame hole size difference...
Driver side looks oval and the passenger side looks round in shape.
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post #15 of 20 (permalink) Old 03-18-2018, 10:49 AM
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Are those holes in the lower control arm or the frame of the car? I haven't seen that on any other car before; but then I never worked on the suspension on my mom's cars (1965 Impala, and a 1968 Caprice) other than shocks and brakes so I may just not have noticed it.

I would think the bar should be centered in the hole, not touching the edge of the hole as shown.

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post #16 of 20 (permalink) Old 03-18-2018, 11:42 AM
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Yes, at least on a 67 the 2 holes where the sway bar passes thru on the frame are different to actually allow the bar to be installed. I just recently upgraded the stock thinner front bar with the thicker HD bar. And when I measured mine I got: 11/16 & 15/16.
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post #17 of 20 (permalink) Old 03-18-2018, 05:57 PM
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Quote:
Originally Posted by chev6 View Post
Frame hole size difference...
Driver side looks oval and the passenger side looks round in shape.
Great pictures man, thanks for posting them. At least all this lets me know it's a common issue and that drilling a new hole for some through-bolts is basically what I'll have to do.

Looking at that picture of your install, I can see what Dave is saying about the bar not being centered in that hole. Interesting, I'll have to look at mine.

HOW A NOVICE REBUILDS A 66 IMPALA CONVERTIBLE:
http://www.impalas.net/forums/blog.php?u=1432
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post #18 of 20 (permalink) Old 03-19-2018, 02:27 AM Thread Starter
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After testing out the Addco bar and still getting the same results as the Hellwig bar.
I decided to drill new holes to secure the brackets in place. (Rear holes only)

I was really hesitating to doing this but theres no way these brackets will ever line up to original holes on the frame.

My only gripe is they should have provided this information as
it does not say you must drill new holes anywhere in their instructions.

And ofcourse i blame myself for not mocking up these new parts prior to powder coating the frame.
But at least i hope this info helps my other impala brothers.
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post #19 of 20 (permalink) Old 03-19-2018, 02:39 AM Thread Starter
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Photos of bracket install after rear holes were drilled.
Piece of blue tape shows approx where i had to drill the new hole.
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post #20 of 20 (permalink) Old 03-19-2018, 02:49 AM Thread Starter
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As per the bar touching the frame at hole passage.
The driver side has about 3/16 of clearance.
The passenger side is barely touching but is not forced.
I could definitely notch it out a bit for more clearance but i want to wait until i have the motor, the body on frame and an alignment done to see if it changes the position.
I know the original bar had more clearance as it was smaller in diameter.
Ill try to find some old pictures for reference.
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1967 impala, front suspension, hellwig, hellwig sway bar, sway bar

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