1985 442 lowering rear height

[ttype]

I used Moog 5659s with a coil cut out in my old Buick:

Bar Diameter - Inches	0.50
End Type 1	Square
End Type 2	Pigtail
Free Height - Inches	13.68
ID - Inches	4.30
Installation Height - Inches	10.00
Load - lbs	576.00
Spring Rate - lbs per inch	162.00
Spring Type	Constant Rate

With a full coil cut out the rate jumps north of 180lb/in if I recall correctly.

View attachment 166400

Hi Mike. Nice buick! Would you happen to know how high off the road your front fenderlips are? Mine are at 25" sitting on 235/60r15s. I think i took 180 degrees out of each 5660(it just seems familiar). Ive been super busy to remember and much of my notes were in a calander that is resting in the same bin as a lot of the passenger side carpet.
So, not imperative to know right away, yet if those prius front springs compress to the same squish height as say a 5401 or a 360deg removed 5659, then the only other factor would be like say a guy wanted to get some airbags like PontiacGP runs to make up for tools, luggage n climbing belts. 5659 and 80670 would require the same style locator a 3rd gen fbody runs... yes?... no?

Thanks in advance, r.

 

[motorheadmike]

Hi Mike. Nice buick! Would you happen to know how high off the road your front fenderlips are? Mine are at 25" sitting on 235/60r15s. I think i took 180 degrees out of each 5660(it just seems familiar). Ive been super busy to remember and much of my notes were in a calander that is resting in the same bin as a lot of the passenger side carpet.
So, not imperative to know right away, yet if those prius front springs compress to the same squish height as say a 5401 or a 360deg removed 5659, then the only other factor would be like say a guy wanted to get some airbags like PontiacGP runs to make up for tools, luggage n climbing belts. 5659 and 80670 would require the same style locator a 3rd gen fbody runs... yes?... no?

Thanks in advance, r.

I remember very little about that car... For reference the front tires were 275/40R17 and the rears were 315/35R17.

I used the front spring isolators from a TBSS in the back of my wagon on the pigtails.

 

[86CUT]

5401 Spring was a great choice for sure thanks all for the information

 

[Rt Jam]

Just get something adjustable.