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Author Topic:   upper A arms
Scoot
Member
posted February 18, 2003 10:44 PM
Ok guys I'm planning on buying the after market tubular A-arms for my camaro. Can someone suggest what length I need to get for right and left to get it set up properly. And also should I get the offset type?

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Scoot
Smith Racing Team
870-365-5989


c21
Member
posted February 19, 2003 09:52 AM
I've got stock mounts on there now, couldnt I redrill them to 6" centers? Or would it be better to just cut off stock and weld on new? I cant have adjustable A-arms so I'm going with the tubular to get it set up correctly.

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Scoot
Smith Racing Team
870-365-5989


c21
Member
posted February 20, 2003 10:21 AM
Hey Scoot, somebody out ther makes tubular a-arms just for a Camaro. I'll try to find out who it is and post back later.


Scoot
Member
posted February 21, 2003 05:21 PM
Thanks Tilley

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Scoot
Smith Racing Team
870-365-5989


15a
Member
posted February 21, 2003 06:13 PM
try u.b. machine .com]



Dixon
Member
posted February 24, 2003 09:18 PM
Has anyone found out about this? I'm in the same situation as Scoot. Any help would be greatly appreciated.

Dixon

o5racer
Member
posted February 24, 2003 09:48 PM
New speedway catalog page 49. 8", 8 1/4", 8 1/2", 8 3/4", 9", 9 1/4" and 9 1/2".
7 3/4" bolt centers for stock camaro and chevelle mounts.
They also have them for metrics. Left side 8 1/2 and 9", right side 8 and 8 1/2". 43 bucks for an arm and bushings isnt too bad.


widebody
Member
posted February 25, 2003 08:29 AM
left hander chassiS sells arms just for this very senerio. The are stock mount(7.75") with either stock length 8.75, 8.0" and 9.5" lengths,these are straight up style, they also list offset styles with 8.0", 8.75", 9.5", 10.5".. They sell for around $46 each.
They are heavier like the afco arms, not light weight like the UB arms..
Good luck in 2003!!!


Scoot
Member
posted February 25, 2003 06:59 PM
Thanks alot guys for the input. Those choices should help me out alot.

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Scoot
Smith Racing Team
870-365-5989


neil rucker
Member
posted February 25, 2003 07:37 PM
someone explain antidive? how to find out what you already have? how to measure antidive? how to change it? starting point for 76 camaro stockclip aftermarket tubular arms . thanks neil

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c21
Member
posted February 26, 2003 10:12 AM
accuratly calculating anti-dive on a front suspension whose inner pivot axi are not parrellel to the car's centerline is a little tricky.

it requires that you create "sideview swingarms" by creating two points on the wheel plane (2 dimensional plane seen in side view that has its "Z" at the center of the tire's contact patch) for both the upper and lower A arm.

these "sideview swingarms" are created as follows:

1) a line is projected through both of the inner pivots to the wheel plane (point #1)

2) a line (perpindicular to the car's centerline) is projected through the inner pivot axis and the center of the balljoint to the wheel plane (point #2)

3) once these two points are established, a line is projected through them (on the wheel plane in side view) towards the rear of the car.


repeat steps 1 through 3 for the other A arm.

where these two lines converge is the "sideview swing arm instant center"

still working in the side view, a line drawn from this instant center to the center of the tire's contact patch is the "force line" the angle of this force line relative to the ground plane is the "degrees of anti-dive"

the other side of the car is done just the same.

I shoot for 6 degrees.

c21


[This message has been edited by c21 (edited February 26, 2003).]

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