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Comp Cams Valve Springs - 16 (85-95 5.0L, 5.8L)

Item 30152
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Market Price $102.99 You Save 13% ($13.00)
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$89.99 (set of 16)

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    Features & Details

    • Dual Spring Design
    • Superior Quality
    • Set of 16 Springs
    • Fits 1985-1995 5.0L and 5.8L V8 Mustangs
    Make More Power. To get the most power from your new camshaft, you need to add the correct high performance valve springs. These Comp Cams Springs feature a unique dual spring design that can easily handle the increased lift found in extreme stress applications.

    Reliable and Durable. If you want to upgrade your Mustang to a hot cam but are concerned about long term reliability, Comp Cam's Springs are the perfect addition to your Pony. These unique springs will keep your upgraded valvetrain in line, while delivering the power you want.

    Application. These Comp Cams Valve Springs are designed for 1985 to 1995 Mustangs with either the 5.0L or 5.8L pushrod V8 engines and are sold as a set of 16 springs. Some milling of the heads is required for installation.

    Fitment: 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 Details

    MPN# 987-16

    CA Residents: WARNING: Cancer and Reproductive Harm -

    What's in the Box
    • (16) Valve Springs
    Installation Info
    Tech Specs
    • Fits 1985-1995 5.0L and 5.8L V8 Mustangs
    • Sold as a set of 16 springs
    • OD Outer Spring: 1.430"
    • ID Outer Spring: 1.070"
    • ID Inner Spring: 0.697"
    • Seat Load: 121 @ 1.800
    • Open Load: 343 @ 1.200
    • Coil Bind: 1.150"
    • Spring Rate: 370 lbs/in
    Will it fit my Mustang?

      Customer Photos (2) Submit Your Photo

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        Questions & Answers (28)

        5 Top Rated Questions

        Will these work with gt40 heads not p heads

        • These springs will require milling for use on GT40P heads.

        Helpful (4)

        Will these work with b303 cam and gt40x heads? Also converting to stud mount 1.6 rockers

        • The Comp Cams Valve Springs will work with a B-303 cam and GT-40x heads.

        Helpful (1)

        I have stock heads , just brought rockers and a e303 cam . What valve springs will I need ? Thanks in advance!

        • These Comp Cams Valve Springs will work very well with an E303 and stock heads.

        Helpful (1)

        What is the max lift for these springs?

        • They do fit in the spring pocket and can be setup for cams up to about .560 total lift

        Helpful (0)

        I have iron 58cc world products Windsor Jr heads and am going run a xe270hr cam with 1.6 rockers. Will these springs work with no machining? What retainers and locks will I need?

        10 More Questions
        Will this springs work with my xe266hr cam,1.7rr, gt40 heads, and stock lifters. 1 answer
        Will These work with stock retainers and keepers ? 1 answer
        This is for my 1989 And i was wondering Is this all i need for installation? Or do i need to purchase valve spring retainers and valve springs locks? Or can i use the stock retainers and locks? 1 answer
        What's the spring pressure and max lift for these springs? Will these work for an X303 Cam or are they not enough to handle the lift (.542")? 0 answer
        Will these work on stock heads without milling 1 answer
        these double springs do not affect the camshaft of the Mustang gt 95? in some future I will put a street camshaft as an e303 1 answer
        Will milling be required for 185 afr heads? 1 answer
        Hello i have a 88 GT all stock. Im putting the b303 cam, how much would have to be milled off stock heads for springs, and can i use my stock vavle retainers? Thanks 1 answer
        Will I need to mill my GT40P heads in order to make these fit right? 1 answer
        I am working on a 90 5.0,gt40 heads,f303, will these springs work ok, an was going to use roller rockers. Any help would be great. 1 answer

          Customer Reviews (4) Write a Review

          Overall Rating 4.2

          out of 5 stars

          Installation Time:Afternoon

          • Performance Gain 4.666667 4.7
          • Fit 4.666667 4.7

          • 3/5

            July 12, 2016

            Stock heads have to be milled

            I didn't notice the advise to mill the stock heads so the inside spring had clearance which resulted in 16 bent pushrods, one broken rocker and a couple broken springs during the motor break in. My own fault but make sure to note the possible need for machine work.


            Year: 1995 Submodel: GT

            Helpful (17)

          • 4/5

            Installation Time: Afternoon

            March 07, 2016

            Nice Springs

            Having my heads ported, a valve job done, and the valve seats refinished. Going to install these springs with 1.6 roller rockers. Will upload photos when completed!


            Year: 1988 Submodel: GT

            Helpful (12)

          • 5/5

            Installation Time: Afternoon

            March 22, 2013

            Great for the Money

            Purchased these for my supercharged notch. Showed up in the mail two days after ordering. Thanks AM.


            Year: 1989 Submodel: Other

            Helpful (13)

          • 5/5

            Installation Time: Afternoon

            November 09, 2012

            High Quailty

            Great product and a must have for an after market cam.


            Year: 1995 Submodel: GT Wichita, Ks

            Helpful (12)

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