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Scat Stroker Series 9000 331 ci Street-Strip Rotating Assembly (79-95 5.0L)

Market Price $1,088.99 You Save 12% ($127.00)
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$961.99 (kit)

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  • Item 100531
  • MPN# 1-94055

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    Features, Video & Details

    • Scat Series 9000 Street-Strip Rotating Assembly
    • Punch Out Your 302ci to a 331ci for More Power
    • Includes Cast Crankshaft, I-Beam Connecting Rods, and Forged Flat Top Pistons
    • 4.030" Bore
    • 3.250" Crank Stroke
    • 5.400" Rod Length
    • Compression Ratio 10.4:1 W/58cc; 9.7:1 W/64cc; 8.9:1 W/70cc
    • Unbalanced Kit - Use 28oz Balancer & 28oz Flywheel/Flexplate
    • Fits 1979 to 1995 5.0L Mustangs

    Review & Installation Video

    Review & Install Video

    Stroker Kit. There is no replacement for displacement, so punch out your 302 V8 to a more respectable 331 for more asphalt-chewing horsepower with a Scat Stroker Series 9000 Street-Strip Rotating Assembly.

    Kit Includes. Maximize the displacement of your engine with a cubic inch-enhancing stroker kit that includes a 9000 Series cast crankshaft, Pro Stock I-beam connecting rods with ARP 8740 3/8" cap screw bolts, forged flat top pistons as well as rings and main & rod bearings.

    Compression Ratio. The Scat Stroker Kit will allow for different compression ratios depending on the heads installed. Examples: 10.4:1 with 58cc heads; 9.7:1 with 64cc heads; 8.9:1 with 70cc heads.

    Unbalanced Kit. This Rotating Assembly comes unbalanced and will need to be professionally balanced before installation. It requires the use of a 28 oz harmonic balancer as well as a matching 28 oz flywheel or flexplate.

    Application. This Scat Stroker Series 9000 331ci Street-Strip Rotating Assembly Kit is designed to fit 1979 to 1995 Mustangs equipped with the iconic pushrod 5.0L engine including the 5.0 LX, GT and SVT Cobra models.

    Fitment: 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 Details

    What's in the Box
    • (1) Crankshaft
    • (8) Connecting Rods
    • (8) Pistons
    • Rings
    • Bearings
    Installation Info
    Tech Specs
    Will it fit my Mustang?

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    9 Questions / 9 Answers

    Ask a Question

    Valve relief on pistons, I am planning on using trick flow 11R twisted wedge heads will these pistons clear if not will I be able to purchase this kit with a set with proper valve relief

    JamesS

    Hey there. I'm building up an 1988 302 and was wondering a couple of things. The rough bore came out to 20 over. "4.020" and was wondering if i could order the kit through you guys at 20 over instead of 30 over. Also, is the kit capable of being internally balanced? or will I have to go with an external balance.

    ChaseF

    • Hello! We only offer the Scat Stroker Series 9000 331 ci Street-Strip Rotating Assembly with a bore of 4.030. It will require the use of a 28oz Harmonic Balancer.

      VincentV

    Helpful (0)

    Does it have to be balance or can u put 28oz Hermonicbalancer

    Anonymous

    • The Scat Stroker Series 9000 331 ci Street-Strip Rotating Assembly does not come balanced, and would require you to use a 28oz harmonic balancer and a 28oz flywheel or flexplate.

      pserafi

    Helpful (0)

    are the connecting rods forged 4340 ?

    junior

    • The connecting rods are forged 4340 steel.

      AshleyK

    Helpful (0)

    Whats the hp rating on this stroket kit

    Aj

    • There really is no HP rating on this kit. The rating of HP will depend on the modifications on your car. For example, if you have replaced the heads with aftermarket ones and same goes for other items such as the camshafts, intake, etc. The minimum and maximum HP will vary.

      KevinD92

    Helpful (0)

    will this kit fit my 1966 Ford Mustang? (289 ci block). I noticed in the description its listed that it fits a 302 ci block. Just wanted to be sure before I purchased it.

    DR

    • With the Scat Stroker Series 9000 331 ci Street-Strip Rotating Assembly (79-95 5.0L), we are only able to confirm fitment on the 1979 through 1995 Ford 5.0L motor. I would recommend contacting Scat directly to confirm fitment for your application.

      SalC7

    Helpful (0)

    Customer Reviews (1) Write a Review

    Overall Rating 5

    out of 5 stars

    • Performance Gain 5 5
    • Fit 5 5



    • 5/5

      February 22, 2017

      Nice

      Not installed yet but I'm a huge fan of the quality of this product. Can't wait to install

      DaltonP

      Year: 1995 Submodel: GT

      Helpful (4)

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