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Rear spring arch question


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Duffy

Tue Aug 27 2019, 11:06PM

Registered Member #3668

Joined: Thu Apr 07 2011, 01:59AM
Location: Glendale, AZ
Posts: 249

I'm getting ready to order up a new set of rear springs on my 70 Newport. I'd like to know if orginal springs were flat at curb weight, slight arc up/down?

Currently, I have 5 leaf. I'm ordering the heavy duty 7 leaf. But they have options for raised or lowered arch up to 3".

KurazyJO

Wed Aug 28 2019, 10:43AM

Registered Member #6740

Joined: Mon Oct 03 2016, 01:35AM
Location: Wauconda, Illinois
Posts: 283

Downward arch.

Duffy

Thu Aug 29 2019, 11:03PM

Registered Member #3668

Joined: Thu Apr 07 2011, 01:59AM
Location: Glendale, AZ
Posts: 249

If you could put a string from bolt to bolt on the spring, would you say it's about an inch or so arc?

I'm asking because my springs are actually about an inch or more negative (upward) arch.

KurazyJO

Sat Aug 31 2019, 09:47PM

Registered Member #6740

Joined: Mon Oct 03 2016, 01:35AM
Location: Wauconda, Illinois
Posts: 283

shoud be more like 3 inchez. I put new main springz in about 10 yirz ago and they are still arched. Flat or anything past without a load in the trunk meanz they are due for replasement.

Northcoast300hurst

Mon Apr 06 2020, 11:58PM

Registered Member #2149

Joined: Thu May 14 2009, 09:26PM
Location: Cleveland, Ohio
Posts: 64

How did the 7 leaf work out? I regretted putting a 7 leaf on my 300. The rear rides like a old pick up truck now. Way too stiff.

[ Edited Mon Apr 06 2020, 11:58PM ]

drchallenger1

Tue Apr 21 2020, 02:54PM

Registered Member #28

Joined: Mon Oct 10 2005, 12:45PM
Location: Albany NY area
Posts: 606

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