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

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

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  • Item 30152
  • MPN# 987-16

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Ship to: Ashburn - 20149
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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

    CA Residents: Warning: California's Proposition 65

    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?

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    Questions & Answers (20)

    5 Top Rated Questions

    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)

    Will milling be required for 185 afr heads?

    • AFR 185's should not require milling, however depending on the cam you are using these may not be adequate.

    Helpful (0)

    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

    • The total amount needing to be milled from the heads can vary due to oem production tolerances in the heads. A qualified machine shop can determine how much must be milled and perform the necessary machine work. We recommend new steel retainers with these springs.

    Helpful (0)

    Will these work with gt40 heads not p heads

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

    Helpful (0)
    Post Your Question
    10 More Questions
    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
    Gt40 heads with 1.7 rollers, e303 cam and Ford racing high performance roller lifters. Will these work? I understand the milling will need to be done to the heads 1 answer
    What spring retainers should I use with these valve springs and 1.6 roller rockers 1 answer
    What rpm are these springs good for before they start floating? Assuming you're using the stock valve train parts. 1 answer
    Will theses springs work on stock auto 95 mustang 5.0 head with e303 cam with stock rocker or should I up grade 1 answer
    Got an 87 GT Cobra 5L with a b303 cam, other then that the engine is stock, am i able to use these springs or will milling be required? 1 answer
    Do guys carry the gt40 valve springs 1 answer
    Will these work on GT-40 P heads? 1 answer
    Will these springs be suitable for my x303 cam? 1 answer

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    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 (10)

    • 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 (7)

    • 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 (8)

    • 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 (8)

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