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#1035114 - 02/15/16 06:49 AM Tubular a-arm options  
Joined: Sep 2008
Posts: 532
86_SS Offline
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86_SS  Offline
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Joined: Sep 2008
Posts: 532
League City, TX
Tried searching but haven't had much luck so hopefully someone here knows the answer.

I currently have tubular upper a-arms from speedwaymotors.com and want to entertain the idea of tubular lowers. Has anyone ever used a set from an A-body car. When I was googling tubular lowers for our g-bodies, it directed to speedwaymotor to a kit containing tubular upper and lowers for a A-body (see link) http://www.speedwaymotors.com/Speedway-1964-72-GM-A-Body-Chevelle-Tubular-Control-Arms,81680.html?sku=91036472&utm_medium=CSEGoogle&utm_source=CSE&utm_campaign=CSEGOOGLE&catargetid=530009170000092199&cadevice=t&gclid=CJCA9MGP-coCFQyEaQodh3YGig

In the pics and others I have looked up on google, they appear to be the same as the body arms. Does anyone know for sure?


86 Monte SS - blackside - sbc350, 700-R4, 7.5" open dif - blazer spindle/brake upgrade w/ stainless braided lines, tubular upper a-arms, 1" front lowering springs, jeep steering shaft, electric fans, serpentine swap, 4" fiberglass hood
#1035119 - 02/15/16 01:15 PM Re: Tubular a-arm options [Re: 86_SS]  
Joined: Oct 2015
Posts: 31
ramey36 Offline
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ramey36  Offline
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Joined: Oct 2015
Posts: 31
Philipsburg, PA
Appearance is similar but every measurement is different. At UMI we've had customer calls of guys trying to interchange to no avail...

#1035123 - 02/15/16 03:13 PM Re: Tubular a-arm options [Re: 86_SS]  
Joined: Sep 2008
Posts: 532
86_SS Offline
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86_SS  Offline
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Joined: Sep 2008
Posts: 532
League City, TX
I figured that would be the case. I was surprised how similar they looked. Thanks for the response


86 Monte SS - blackside - sbc350, 700-R4, 7.5" open dif - blazer spindle/brake upgrade w/ stainless braided lines, tubular upper a-arms, 1" front lowering springs, jeep steering shaft, electric fans, serpentine swap, 4" fiberglass hood
#1035124 - 02/15/16 03:17 PM Re: Tubular a-arm options [Re: 86_SS]  
Joined: Oct 2015
Posts: 31
ramey36 Offline
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ramey36  Offline
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Joined: Oct 2015
Posts: 31
Philipsburg, PA
No prob!

Besides the fact the arms don't physically fit the mount-

The lower arm really does set the layout of the front suspension and all of the measurements are super-critical. We try to hold tolerances literally within a few thousandths concerning inner pickup points vs ball joint location as well as accuracy of spring bucket location and height.

ramey

#1035125 - 02/15/16 03:22 PM Re: Tubular a-arm options [Re: 86_SS]  
Joined: Sep 2008
Posts: 532
86_SS Offline
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86_SS  Offline
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Joined: Sep 2008
Posts: 532
League City, TX
Yea that's why I figured something had to be different for controls from an a-body vs a g-body. A lot of a-arms look very similar to each other now that I start looking. The first set I looked at were lowers for an s10, the same we use for the spindle swap.

That's why I love this forum though. So much knowledge and always at least someone that knows or can find the answer.

Thanks again


86 Monte SS - blackside - sbc350, 700-R4, 7.5" open dif - blazer spindle/brake upgrade w/ stainless braided lines, tubular upper a-arms, 1" front lowering springs, jeep steering shaft, electric fans, serpentine swap, 4" fiberglass hood
#1035126 - 02/15/16 03:34 PM Re: Tubular a-arm options [Re: 86_SS]  
Joined: Mar 2012
Posts: 823
MC96 Offline
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MC96  Offline
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Joined: Mar 2012
Posts: 823
St. Johns MI
The only other GM arms that fit our cars are 67-69 camaro and 68-74? Nova (theyre the same) front arms, switched side to side.

They work well on dirt modifieds, but I would imagine moving the lower ball joint 1.5" forward and 1.5" out would look a little goofy in the wheel hole.

Most of the GM stuff physically looks the same, especially the a-body stuff.


86 SS
400SBC, 4l80e, MSD Atomic injection/trans controller, Tilt glass clip, all tubular arms, corvette brakes, 9" rear
In progress
#1035918 - 03/05/16 05:12 AM Re: Tubular a-arm options [Re: 86_SS]  
Joined: Sep 2008
Posts: 328
JBreu Offline
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JBreu  Offline
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Joined: Sep 2008
Posts: 328
Livonia,N.Y.
What's the benefit of the tubular lower control arms over the stock ones besides bragging rights?


1984 Monte Carlo sbc bored/stroked to 388 c.i. 514 Dynoed HP.700r4 w/2000 stall,12 Bolt w/4:10
Old Chevy's Don't Die, They Just Get Faster
Best E.T. to date : 12.20 @ 110 MPH All Motor
#1035920 - 03/05/16 12:49 PM Re: Tubular a-arm options [Re: 86_SS]  
Joined: Dec 2003
Posts: 1,570
spacemanspif Offline
15+ Year
spacemanspif  Offline
15+ Year
Member

Joined: Dec 2003
Posts: 1,570
Sewell, NJ
Lighter weight, better looks, stronger, can be made for coil overs, can be build to correct bad stock geometry.


-Mike

F-body bucket seats, camaro console, carb'd 5.3/4L80E swap

Fastest time to date: 13.390 @ 102.42
Best r/t: 0.007 I got lucky smile

Killed a few cones too

#1035941 - 03/06/16 12:04 AM Re: Tubular a-arm options [Re: 86_SS]  
Joined: Mar 2003
Posts: 1,855
TooSlow406 Offline
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TooSlow406  Offline
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Joined: Mar 2003
Posts: 1,855
Dickinson, TX
most tubular CAs arent all that light. trz has the best ones for that. stock uppers are just stamped steel. for the most part, you get them to correct the geometry.


1985 Monte 406sbc, RHS ported 220s, Schoenfeld 1 3/4", 3" exhaust, Dynomax Ultra-Flo, Holley ported Strip Dominator, Dual Holley Blues, Holley HP 950, Comp roller 236/245, .570/.574

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