65 coil spring on a 69

[A50shobx 8]

I reed some were that if I run a 65 coil spring on a 69 mustang it will lower about 2 inches is this true? Has anyone done it?

[larryc94 38]

That's what I have on a '70.  using 65-66 "620" springs which are 560 lb uncut, 3/4' poly spacer with roller perches

 

Like the stance and it rides great, can take speed bumps at like 10 mph no problem.  I wish the rear would absorb as good as the front

 

Soaks up wash board roads

 

Don't understand why this combo is not more popular, I discovered it in a Mustang plus catalog a couple of years ago.

 

Lot of people say "620" springs are harsh, they usually cut coils to get the right stance.  They ride great if you don't cut them

 

Larry

[A50shobx 8]

Thank you for the reply .. but are all stock 65-66 springs 620 ? How can you tell?

[larryc94 38]

No, the "620" springs are a stiffer than stock.

 

 They're called "620" because the wire size of the spring is 0.620", they are rated at 560 lb.  They also lower 1" and by using the 65-66 spring which is 1" shorter than the 67-70 spring you get 2" lower stance.

 

They're other springs for a 65-66, GT and I guess standard.  I can only answer for the springs I used and are very happy with the outcome.

 

I took a gamble with this setup and usually stuff like this doesn't work out.  The only problem I had was originally used a 1/4" poly spacer and the spring would become loose when on a lift or jacked with the wheel hanging.

 

That I couldn't put up with every time you lift it you have to make sure the spring is seated (this no ricer).  By switching to a 3/4" poly spacer it was just right that spring stayed put

 

Larry

[A50shobx 8]

Thank you Larry I believe that is wgat I read to I just wanted to make sure I remembered that right before I bought something

Tony