Free Shipping On Orders Over $49. Details

Talk to a Mustang Enthusiast
M-F 8:30A-11P, Sat-Sun 8:30A-9P
Win $6,000 In Store Credit Enter Now

Scat Stroker 331 Cubic Inch Forged Competition Rotating Assembly (79-95 5.0L)

Item 100533
Call a Mustang Enthusiast at 1-877-887-1105
M-F 8:30A-11P, Sat-Sun 8:30A-9P
Market Price $2,119.99 You Save 12% ($245.00)
Our Price

$1,874.99 (kit)

FREE Shipping

Will this fit your Vehicle?

Select a different vehicle Help?
Update or Change Vehicle
In Stock

Ship to: Ashburn - 20149
Sorry, please enter a valid US or CA postal code
We're sorry, zip can't be updated at this time.
    Create a list
    Add to New List

    Saved - View your saved items

    We're sorry. We couldn't save this product at this time.

      Product Information

      Features, Description, Reviews, Q&A, Specs & Installation


      • Scat 4340 Forged Competition Rotating Assembly
      • Punch Out Your 302ci to a 331ci for More Power
      • Includes Forged Crankshaft, H-Beam Connecting Rods, and Premium 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


      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 4340 Forged Competition Rotating Assembly.

      Kit Includes. Maximize the displacement of your engine with a cubic inch-enhancing stroker kit that includes a 4340 forged crankshaft, 4340 forged H-beam connecting rods with ARP 8740 7/16" cap screw bolts, premium 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 4340 Forged Competition 331ci 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

      Scat 1-45160

      CA Residents: WARNING: Cancer and Reproductive Harm -

      Installation & What's in the Box

      Installation Info

      What's in the Box

      • (1) Crankshaft
      • (8) Connecting Rods
      • (8) Pistons
      • Rings
      • Bearings

      Tech Specs


      Customer Reviews (1)

      Write a Review

      Ratings Summary

      5.0 out of 5 overall rating from 1 customers

      • March 29, 2016

        5 1995 GT - IRECyou


        If you are mechanically capable then this is a great way to get some much needed power.

        Helpful (14)

      Questions & Answers (6 answers)

      5 Top Rated Questions

      What heads would work with this kit?

      • The Scat Stroker 331 ci Forged Competition Rotating Assembly will work with any small block ford head. With 331 CI displacement, we recommend something with a 185+ cc intake runner, and 2.02" intake valves to achieve optimum power.

      Helpful (2)

      Will I need rockers and valve covers?

      • It is not necessary to replace the rockers and valve covers when installing the Scat Stroker 331 ci Forged Competition Rotating Assembly unless you plan to change out the heads as well.

      Helpful (1)

      Is 28oz. Flywheel and balancer still required after having assembly balanced by machine shop? If so, why?

      • You will still need to use the flywheel and balancer as well as getting it balanced by a machine shop as the crank has not been balanced for the rods and pistons that comes in this stroker kit.

      Helpful (1)

      Can I fairly easily replace stock 95 stang internals with these, or is this something that has to be professionally assembled.

      • We recommend professional installation for this Scat Stroker 331 ci Forged Competition Rotating Assembly so the clearances within the engine can be properly checked and other potential problems can be addressed when doing the rebuild.

      Helpful (1)

      hp rating?? what is the horse power rating on this stroker kit??

      • they can withstand over 600hp easily.

      Helpful (1) Show 1 more answer
      Post Your Question
      1 More Question
      Is this a good kit for boost? 1 answer

      Will It Fit My Mustang

      • Cobra - 93, 94, 95
      • Cobra R - 93, 95
      • GT - 87, 88, 89, 90, 91, 92, 93, 94, 95
      • LX - 87, 88, 89, 90, 91, 92, 93
      • Other - 79, 80, 81, 82, 83, 84, 85, 86

          Related Mustang Categories