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    1. #1
      Join Date
      Oct 2006
      Posts
      261

      Rear Leaf Replacement

      Have decided it's time to replace the rear leafs in the bird. Question is, if I replace them with springs with a 175lb spring rate instead of the 125lb springs that the car was built with, will it be too harsh for the street?
      It's 80% street with the occasional track day(a couple times a year). I do tend to run it hard even on the street but like having it too low it ends up being a compromise around town.
      Opinions from anybody running stronger springs on the street would be helpful.



      Robert


    2. #2
      Join Date
      Nov 2008
      Location
      Lawrenceburg, TN
      Posts
      4,098
      Country Flag: United States
      you'll be fine Bob, the harshness comes from the shock dampening, if you use what you have now the ride will be very close to the same

    3. #3
      Join Date
      Oct 2012
      Location
      Fremont, CA
      Posts
      64
      Country Flag: United States
      Bob,
      I run the Hotchkis rear leafs 1 1/2 drop, the stance on my car looks just right to me and like Rod said, the shocks are going to set your ride quality
      Attached Images Attached Images  
      1969 Firebird 455HO, TH400, 12 Bolt 3:42, 17X9 Snowflakes w/ 275/40R17 Nitto's, Hugger Orange Imron, Aug 1987 Car Craft cover car.

    4. #4
      Join Date
      Jul 2013
      Location
      Hubert, NC
      Posts
      164
      Country Flag: United States
      Don't forget the a Quality Set of Bushings!
      David H. Amrine
      (USMC Retired)

      Boys drive fast on the street. But MEN prove how fast they are at the Track.

    5. #5
      Join Date
      Oct 2006
      Posts
      261
      Well I will be going from the 45 year old sagging, wore out springs that were 125lbs from the factory to new 175lb spring set so I would think it's going to cahnge it somewhat.

      Roy, you did a whole bunch of undercarrage work lately, did you replace the leafs? Mine sits a bit lower that yours does I think. I can run some 1" blocks but I really don't want to go anymore than that. I'm looking at some springs with a 5" arch. I'm not sure what the arch was on stock springs.

      Robert

    6. #6
      Join Date
      Oct 2012
      Location
      Fremont, CA
      Posts
      64
      Country Flag: United States
      Bob,
      Yes, the Hotchkis 1 1/2 drop springs were actually a little higher than the original stock worn out ones were. I think they have settled a little now and of course, I've gotten used to the ride height and really like it. I don't think I could have gotten by with any lower in the rear because it would have been lower than the front, which on my car was too low, had to raise it back up an inch (riding on the jounce bumpers), I got my springs from summit, I found the best price on the web first, the called Summit, had them match the price and got free shipping, plus they had them in stock, killer deal!
      1969 Firebird 455HO, TH400, 12 Bolt 3:42, 17X9 Snowflakes w/ 275/40R17 Nitto's, Hugger Orange Imron, Aug 1987 Car Craft cover car.




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