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Old 04-06-2010, 08:50:06 PM   #1
gookc
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1970 rear sway bar questions? Size and bushings?

Hi everyone!
I am restoring a my 1970 camaro base model.
I parted out an original 1970 Z28 years ago that was rotten beyond repair.
Had a few questions on the 1970 rear sway bar. What size is it? and where can I get the bushings for the ends, as well as the drop link bushings?
Also, I compared the Z28 rear sway bar with my 1970 Formula 400 rear bar, and the Z28 bar is allot larger diameter than the Formula bar.
thanks
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Old 04-06-2010, 09:04:32 PM   #2
Gary S
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1970 base model Camaro ordered with F41 would have had a 9/16" rear swaybar. 1970 Z28 Camaro had a 11/16" bar.
I don't know what size the Formula Firebird had, but it probably varied depending on year. Trans Ams used 5/8", 3/4", or 7/8" depending on year and options.
Bushing sets are available from places that specialize in suspension parts. Some of them have been listed here in previous discussions on this subject. A search might turn up a source for you.
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Old 04-06-2010, 10:06:12 PM   #3
Dewey70
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Location: Memphis, TN
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I just received a set from P-S-T.com. $42 delivered. Haven't installed yet but appears to correct fit. 11/16, 2 bolt retainer.
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Old 04-07-2010, 02:42:09 AM   #4
70RS_L48
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New Info

Quote:
Originally Posted by Gary S
1970 base model Camaro ordered with F41 would have had a 9/16" rear swaybar. 1970 Z28 Camaro had a 11/16" bar.

As an original owner, you'd be more likely than anyone to get this one right. Just looked at our info page, and it shows 9/16" across the board. I'm guessing that we need to update our info?:

http://www.nastyz28.com/camaro/70zsusp.html

And to think I've been laboring all these years with the understanding that all the F-41 cars wore the 9/16" rear bar! Doh!
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Old 04-07-2010, 01:16:04 PM   #5
gookc
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thanks Dewey70

ordered mine today! same price but more for shipping since in hawaii
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Old 04-07-2010, 04:24:52 PM   #6
gookc
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I remeasured the sway bar again, and with a digital micrometer and the bar measured .76. Could the factory 1970 z28 bar be 3/4"? or is it 7/16"?
Is it safer to order bushings for a 3/4 or 7/16?
The difference is a 1/16th of an inch.
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Old 04-07-2010, 04:52:42 PM   #7
Gary S
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Quote:
Originally Posted by gookc
I remeasured the sway bar again, and with a digital micrometer and the bar measured .76. Could the factory 1970 z28 bar be 3/4"? or is it 7/16"?
Is it safer to order bushings for a 3/4 or 7/16?
The difference is a 1/16th of an inch.

THe 70 Z28 rear bar should be 11/16, which is just 1/16 under the 3/4 bar used on Trans Ams.
(3/4 is 12/16, so 7/16 would be much smaller)
If yours measures .76, I'd order the 3/4 bushings. (11/16 would be .6875)It is always possible that this bar got switched sometime in the life of the car. Measuring is more trustworthy than going by what "should" be on a car after 40 years.
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