Moparts Forums >> Corners Are Best - Handling Tech

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440PURSUIT
mopar addict


Reged: Dec 17 2004
Loc: DC, MD Suburbs
M Body handling improvements
      #7845246 - Mon Sep 09 2013 10:22 AM

Just scored a clean 1980 Diplomat 2 door.

What would be some good improvements to this car?

Cop Parts or aftermarket?

Thanks

Edited by 440PURSUIT (Mon Sep 09 2013 11:40 AM)


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67autocross
mopar


Reged: Nov 29 2006
Loc: Manitoba Canada
Re: M Body handling improvements [Re: 440PURSUIT]
      #7845247 - Mon Sep 09 2013 10:23 AM

1980 or 1990? I think the last year for the M was 89

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Supercuda
I also have a small weasel!!


Reged: Sep 04 2007
Loc: West Texas
Re: M Body handling improvements [Re: 440PURSUIT]
      #7845248 - Mon Sep 09 2013 10:23 AM

You mean 80?

Cop stuff, if you can find it, is usually cheap. Firm Feel makes some stuff for them, not cheap but quality.

I believe Mopar Muscle had a series on upgrading the M some years ago. Finally, www.dippy.org is a good resource.


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Supercuda
I also have a small weasel!!


Reged: Sep 04 2007
Loc: West Texas
Re: M Body handling improvements [Re: 67autocross]
      #7845249 - Mon Sep 09 2013 10:24 AM

Quote:

1980 or 1990? I think the last year for the M was 89




Got to be 80, 81 was the last year of the 2 door I believe.


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67autocross
mopar


Reged: Nov 29 2006
Loc: Manitoba Canada
Re: M Body handling improvements [Re: Supercuda]
      #7845259 - Mon Sep 09 2013 10:30 AM

Next question how much do you want to spend?

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440PURSUIT
mopar addict


Reged: Dec 17 2004
Loc: DC, MD Suburbs
Re: M Body handling improvements [Re: 440PURSUIT]
      #7845327 - Mon Sep 09 2013 11:39 AM

1980

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440PURSUIT
mopar addict


Reged: Dec 17 2004
Loc: DC, MD Suburbs
Re: M Body handling improvements [Re: 440PURSUIT]
      #7845332 - Mon Sep 09 2013 11:43 AM

Wow, my iPhone did some nasty Spell changes.

I would want to be conservative spending. Other muscle projects take precedence.

C


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67autocross
mopar


Reged: Nov 29 2006
Loc: Manitoba Canada
Re: M Body handling improvements [Re: 440PURSUIT]
      #7845358 - Mon Sep 09 2013 12:08 PM

Solid K member mounts and good front shocks would be my first items.

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Supercuda
I also have a small weasel!!


Reged: Sep 04 2007
Loc: West Texas
Re: M Body handling improvements [Re: 67autocross]
      #7845901 - Mon Sep 09 2013 06:55 PM

http://firmfeel.com/fmj.htm

A god place to look around


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MarkM
top fuel


Reged: Jan 13 2005
Loc: USA, MI
Re: M Body handling improvements [Re: 440PURSUIT]
      #7855284 - Mon Sep 16 2013 10:43 PM

How crazy are you looking to get? The weakest part of the entire package are the torsion bars in my opinion. I've got a Fifth Avenue that I pretty much did everything to and still wasn't very happy with it until I put new bars in it.

Cop sway bars, frame ties, and modifying the power steering pump will give you the biggest improvement (providing everything else is straight) for the least amount on money spent. If you really want to make it handle:

-FF 300# torsion bars
-FF aluminum K frame biscuits
-Cop 1 1/8" front sway bar (civy is only 1 1/16") with poly bushings
-Cop 3/4" rear bar with poly bushings
-Frame ties
-5 leaf rear springs
-Dump the ISO setup in the rear and run B-body shock plates
-Bilstein shocks on all four corners
-11/16" tie rods
-Modify the stock power steering pump regulator valve to turn down the pressure
-Decent tires

This is what I did to my Fifth and it handles like it's on rails now.

--------------------
'87 Fifth Avenue 360/518/8.75


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