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Thread: 5.0 Springs - stock to small drop

  1. #1
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    Default 5.0 Springs - stock to small drop

    The threads here concerning springs are not clear as even Rockauto shows Moog #8658 as being the correct replacement springs while 8602s have been brought up. I'm looking for springs that will drop the car up to 0.5" up front, mainly because of some lighter parts that will be getting installed up front here soon.

    What should the 8602's do to the car, along with the 8600's, in the case of a stock iron headed and a/c equipped vehicle with an automatic? Drop 100 lbs off the front end and then what may I expect?

    Gotta get me some parts ordered


    Also what at RockAuto comes as singles and what comes as pairs? I'm assuming the below:

    Pair:
    Strut Mount
    Spring Front
    Spring Rear

    Single:
    Tie Rod End (outer)
    Tie Rod End (inner)
    Rack and Pinion
    Ball Joints Lower
    Inner Wheel Seal
    Wheel Bearings
    Calipers/Brake Pads
    Rotors
    Last edited by Seek; 04-26-2009 at 12:10 PM.

  2. #2
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    My front end is about 150 pounds lighter than stock, but I'll show the before and after on the springs
    The stock spring were on the car in the following pic with all the weight loss measures done already:



    The pic below is after installing Moog #8598's out front.


    You MAY want to go with the 8600... Kitz runs those....
    Last edited by V8Demon; 04-27-2009 at 02:47 PM.
    -- 05 Mustang GT-Whipplecharged !! -- 87 5.0 Trick Flow Heads & Intake - Custom Cam - Many other goodies...3100Lbs...Low12's! http://www.fquick.com/V8Demon

  3. #3
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    Yeah I saw that but your posts in threads are the only ones talking about the springs

    Everywhere still lists 8602's as 3.8 liter springs with the 5.0 ones being 8658's. I figure either the 8602's or 8600's will get the the same frontend height as my currently worn out suspension but unsure which - I assume 8600's.

    It's going to cost around $1100 to do all the front suspension, steering, brakes, rear suspension (already have CHE control arms), and rear brakes using Bilstein struts/shocks. Not bad but not "cheap" either. At least using good parts all around should help it last a good long while. The good thing - it can all be done in a couple weekends doing the front first and then the rear/axle/brakes to disc in the rear the second. I figure this stuff will make a much bigger impact that the new engine/trans did.

  4. #4
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    So is the 8602 really stock height or still slightly lower than the 8658's? I cannot find the 8600's anywhere but online.

  5. #5
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    -- 05 Mustang GT-Whipplecharged !! -- 87 5.0 Trick Flow Heads & Intake - Custom Cam - Many other goodies...3100Lbs...Low12's! http://www.fquick.com/V8Demon

  6. #6
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    I've seen those but 8658 is the Sport springs while 8606 is the standard LX/5.0

    The numbers I'm trying to compare but have no clue about are:

    Install Height Load rate (lbs) Spring Rate (Lbs/in.) Free Height

    11.00 1660.0 415.0 15.00
    11.00 1740.0 415.0 15.19
    11.00 1820.0 415.0 15.38

    STOCK NON-SPORT 5.0
    11.00 1900.0 462.0 15.13

    STOCK SPORT 5.0
    11.75 1695.0 417.0 15.84


    Google fails me!

  7. #7
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    I have 8600's on now with alum. heads, didn't lower much. V-8 demon seem to hit it right with the 8598's.
    Old Grey Cat to this.88 Cat,5.0 HO, CW mounts,mass air,CI custom cam,afr165's,Tmoss worked cobra intake,BBK shorty's,off road h pipe, magnaflow ex. T-5,spec stage 2 clutch,8.8 373 TC trac loc,che ajustables with bullits on the rear.11" brakes up front. +

  8. #8
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    Here's mine with 8600's
    Attached Images Attached Images
    Old Grey Cat to this.88 Cat,5.0 HO, CW mounts,mass air,CI custom cam,afr165's,Tmoss worked cobra intake,BBK shorty's,off road h pipe, magnaflow ex. T-5,spec stage 2 clutch,8.8 373 TC trac loc,che ajustables with bullits on the rear.11" brakes up front. +

  9. #9
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    Pay more attention to the spring rate and load rating....

    Notice the load rating of 1900 pounds for the "stock non-sport 5.0"

    THAT'S gonna be up in the air....
    For reference purposes I've edited the first post to show the difference before and after concerning my spring height. Before the swap was stock height springs.
    -- 05 Mustang GT-Whipplecharged !! -- 87 5.0 Trick Flow Heads & Intake - Custom Cam - Many other goodies...3100Lbs...Low12's! http://www.fquick.com/V8Demon

  10. #10
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    Okay, so it seems that 8600's SHOULD be a good fit with irons and retained a/c then.

    Kitz, still have a/c or no?

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