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Old 11-03-2007, 05:01 AM
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MustangII A-Arms level

I''ve read a bunch of threads but can't find an answer to the following:
'56 F100, TCI Mustang II w/ dropped spindles, Small block chevy., maybe 700 miles on it. Yes PS, yes, a Heidt's adjustable Flow control on PS line slowed way down.
My A-arms lack about 1/2" - 5/8" from being level.
1) What adverse handling characteristics should I be experiencing with A-Arms not being level?
2) Cut springs to set to level or leave it alone?

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Old 11-03-2007, 05:52 AM
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Have you had the front end aligned?Personally I wouldnt worry about 1/2 or 5/8". With only 700 miles I'm sure the coils being new will settle some.If it was the opposite way,going upwards I'd be concerned.I'm not pro on this,but good question to post,cause I.ve seen some way out of wack,scary looking.......
I'm thinking of a '56 being top heavy,what do you think of putting a sway bar on it?(if you dont have one.)Would make big difference in ride and handling.
Just a thought..........

Last edited by KRUZR; 11-03-2007 at 06:03 AM.
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Old 11-03-2007, 06:14 AM
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I have installed about 25 of these front ends . The A-arm angle is determined by the springs you have installed. A 1/2" differance in ht, as measure from the inner A-arm pivot to the outter A-arm is good as long as the inner pivot pt. is higher. At 700 miles the springs will not drop much more.

Did you install 4 or 6cyl. spring?,

Don Meyer
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Old 11-03-2007, 06:40 AM
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Front end has been aligned twice. First time no Caster = Bad handling at Highway speed. 2nd time = about 4-5 degrees Caster = much better but was hoping for even better/less twichy at highway speed.
Do not have a Sway Bar but am considering.
Yes, Inner pivot is higher than outer.
Purchased from CPP, it is a TCI unit , Small Block springs.
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Old 11-03-2007, 09:03 AM
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If you are using a GM ps pump....the installation of a pressure reducing valve will help with the twitchiness at speed.

If you are really concerned by the by the angle you coulds cut 1/2 a coil from the springs, but I would leave it alone. That much difference from being parallel to the grd. will have very little change in caster as the wheel moves.

BTW I am running 6 degree caster along with the pressur reducing valve. I believe I bought the valve from Speedway. There are also 2 R&P used w/the Must II kit. The original Must II & one from a T-bird. I believe that Flaming River also sells one w/a slower ratio.

Don Meyer
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Old 11-03-2007, 11:35 AM
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Don, as mentioned in my first post I AM running a Heidt's adjustable flow control (and I have it turned way down). And I am running the T-Bird PS R&P as that is what came with the kit (15 1/2" mounting span).
Maybe I am just not use to the quickness of an R&P.....I thought that maybe if the A-Arms weren't level; it would have a great adverse affect on it. Guess not.
I am considering installing a Sway Bar as mentioned and maybe by reducing the weight in my wallet; it would make a difference in the handling. We all know how that goes !!!!
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Old 11-03-2007, 02:46 PM
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I personally would try a few more degrees of caster. There are many people on this site using this R&P. I hope they will jump in w/their senarios.

You are by no means alone w/this problem. This is a common problem with Must II kits w/R&P. Some have gone so far as to replace their chevy ps unit with a ford pump. Some ignore the problem, however it can be dangerous.
a SWAY BAR WILL NOT HELP SOLVE THE PROBLEM....been there done that.

A manual R&P solves the problem......also I think Flaming River is making one.

PLEASE KEEP US ADVISED........Don
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