Tubular A Arms - Chevelle Tech
Brakes, Suspension & Steering Conversion questions & more.

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post #1 of 6 (permalink) Old Jun 1st, 20, 2:16 PM Thread Starter
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Tubular A Arms

is it worth the effort to install new Tubular Upper A Arms using the OEM Bottom A Arms and Coil Springs on a Big Block 72 El Camino?
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post #2 of 6 (permalink) Old Jun 1st, 20, 3:55 PM
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Jim
 
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Re: Tubular A Arms

It really depends on what you want out of the car as far as use. If you want to carve some corners, then some good quality aftermarket upper arms will enable you to align the car with more modern specs for modern handling. The lower a arms will be fine if they are in good condition bushing wise...

72 SS 402/4 speed/Straub roller and a bunch of Duramaxes.....
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post #3 of 6 (permalink) Old Jun 1st, 20, 3:58 PM
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Brian
 
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Re: Tubular A Arms

Quote:
Originally Posted by The Bullet View Post
is it worth the effort to install new Tubular Upper A Arms using the OEM Bottom A Arms and Coil Springs on a Big Block 72 El Camino?
If you do it, be sure to get the 0.9" taller upper ball joints, as they will improve the lousy factory camber curve. The new uppers will also improve the caster, as long as you purchase quality name brand units (not the cheap Chinese crap).
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post #4 of 6 (permalink) Old Jun 1st, 20, 7:06 PM
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Tom Terrific II
 
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Re: Tubular A Arms

once again, UMI. did I mention UMI? their uppers will allow the modern alignment with 6-7 degrees caster.
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post #5 of 6 (permalink) Old Jun 2nd, 20, 10:13 AM
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Greg.
 
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Re: Tubular A Arms

I did Front Upper and Lowers from UMI Perf # 403133 on my 67 in 2013 and they have been working flawlessly since plus best Quality Fit and Finish I have ever seen
https://www.umiperformance.com/home/...dy-a-arm-kits/



I also put all new Upper Adj & Lower Boxed Rear Control Arms & F&R Sway Bars in 2010

67 Chevelle Malibu SS Cdn
Born 283 / PG / A51
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1/8 = 7.532 et / 91 mph
1/4 = 11.814 et / 115 mph
NEW Best with 3,500+ Stall TC 2019/09/08
60' = 1.547
1/8 = 7.311 et / 91.76 mph
1/4 = 11.595 et / 114.28 mph


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post #6 of 6 (permalink) Old Jun 2nd, 20, 10:29 AM
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Bryan
 
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Re: Tubular A Arms

Yes it is worth it, as long as the new upper arms actually reposition the upper ball joint. Most of the reputable manufacturers do this, such as UMI, etc. but some of the cheaper tubular arms don't. Compared to the stock arms, the upper ball joint is a little closer to the firewall, and this is what allows you to get more caster when you have your alignment done. The revised geometry (not the fact that they are tubular) is what provides the greatest benefit.

I have the non-adjustable UMI arms on my car. Overall I'm very happy with them. I do my own alignments, and it would be way easier to dial it in without having to use shims. Plus, I can only shim them so much before I start hitting my headers. For these reasons, I'd get the adjustable arms if I could go back and do it all over again.

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