M BODY REAR SPRINGS W/ 8 3/4 REAR

Chassis, Suspension and wheels

  1. CM360

    CM360 Well-Known Member

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    What are my options? Probably 5 leaves, no ISO and a shock recommendation too. 350 HP 318 and auto for an every day driver.
     
  2. Duke5A

    Duke5A Well-Known Member

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    An 8.25" would probably hold up fine for DD duties with an automatic, no slicks and 350 HP. Larry's 408 powered AHB has had an 8.25" in it for a few years doing DD with 470 HP. I went 8.75" when I ran small blocks though because I couldn't find an 8.25", so there is that.

    You should be able to have the factory 4 spring leafs re-arched with a helper to make a five pack. I did this for many years before I went and bought brand new ones. Old ones didn't sag, just wanted new.

    I would think just a set of Monroe Sensatrack shocks with be good for a DD. They're not expensive either. I'm running Edelbrock shocks on my car with the ISO delete, but those shocks were discontinued years ago.
     
  3. CM360

    CM360 Well-Known Member

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    But that's still living with the Iso big spring eye bushing, right?
     
  4. Duke5A

    Duke5A Well-Known Member

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    Yeah, still using M style springs. I'm sure I can dig up photos if you want.
     
  5. CM360

    CM360 Well-Known Member

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    I think that ESPO had an option for round or Iso roundtangular spring eyes.
     
  6. Duke5A

    Duke5A Well-Known Member

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    I didn't even realize that was an option. I got my springs from a local supply and they were factory AHB replacements.
     
  7. 89.Fifth

    89.Fifth Well-Known Member

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    51J03ndxmAL._SL1500_.jpg

    Sachs 030268 Shocks. I just got these and they are the best rear shocks I've ever used. In my opinion smoother than Monroes and better handling than KYBs. Rock Auto sells them at a good price but Amazon has them too.
     
  8. CM360

    CM360 Well-Known Member

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    These shocks were used with the 8 3/4 swap? If so, have a part#.
     
  9. M_Body_Coupe

    M_Body_Coupe Well-Known Member

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    When I did mine I replaced just the top leaf, when to the round eye, never looked back!
     
    Last edited: Jan 30, 2019
    Oldiron440 likes this.