1985 442 lowering rear height

ttype

Greasemonkey
Supporting Member
Jan 30, 2017
222
43
Brockville, Ontario.
I used Moog 5659s with a coil cut out in my old Buick:

Bar Diameter - Inches0.50
End Type 1Square
End Type 2Pigtail
Free Height - Inches13.68
ID - Inches4.30
Installation Height - Inches10.00
Load - lbs576.00
Spring Rate - lbs per inch162.00
Spring TypeConstant 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

Geezer
Nov 18, 2009
7,472
113
Ottawa, Ontario Canada
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

Not-quite-so-new-guy
Dec 16, 2020
29
18
5401 Spring was a great choice for sure thanks all for the information
 
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