Thread: Alignment theory Mustang II

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Scooting if it had been me I would have left when they told me they were going to use the stock specs, especially when I looked at what those specs were. The stock 40 Ford Car specs I come up with are:


Alignment Specs 1940 car *

Caster

Max + 9

Min + 4 1/2

Max Variation 1/2

Camber

Max +1

Min +1/4

Max variation 1/4


Toe

Max 1/16”

Min 0

( * Fine for original suspension, dirt roads and skinny bias tires)


Now from what I see they didn’t even come close to matching those specs when they aligned the car anyway. Your right there is way too much difference in the caster readings.

Road crown is compensated for with Camber not Caster…..usually no more than a + ½ degree (on the left) and now days most shops tend to only go +¼ degree.

Wear on the inside of both front tires is usually indicates the wheels are toed out or possibly WAY too much negative camber on both sides.


There are a lot of opinions on aligning modified front ends. What has worked for me is to use the factory specs for the donor car as a starting point……Tech’s answer # 5 77 Mustang II. I would probably shoot for about +1 ½ degree caster and +1 degree camber (just due to my own past experiences).

I’m lucky, I have a very good shop I use….after we set the alignment I drive the car and if necessary we do any fine tuning. That is all included in the alignment cost.

Just my 2 cents, if they let the car go out with the caster specs you have I would not even bother going back there......find a shop that knows what they are doing and will take the time to do it right.



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