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Ford Performance X303 Performance Camshaft (85-95 5.0L)

Item 24070
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      Product Information

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


      • Street/Strip Performance
      • Hydraulic Roller Lifter
      • Sold Individually
      • For 1985-1995 5.0L with 1.60 Rockers


      Street/Strip Performance. This Ford Racing cam is a great replacement choice for increasing your pony's torque and horsepower up to 6200 RPM, and it has a fair idle.

      Application. The Ford Racing X303 Performance Camshaft is designed for use in the 1985-1995 5.0L V8 Mustangs with 1.60 rockers.

      Technical Notes. Ford Racing recommends the use of a Hi-Stall torque converter for Mustangs equipped with automatic transmissions. Valve clearance should be checked, as it may require piston modification for piston-to-valve clearance.

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

      Ford Performance M-6250-X303

      CA Residents: WARNING: Cancer and Reproductive Harm -


      Customer Reviews (11)

      Write a Review

      Ratings Summary

      4.8 out of 5 overall rating from 11 customers

      Installation Time: Afternoon

      • December 31, 2019

        5 1986 Other - william Installation Time: Afternoon

        Chose over Elgin Camshaft

        I am using this cam in a 86 Foxbody i have recently put a 5.8 stroked to a 393. I thought this cam would be better than it is. I have no regrets with it , but with the stroker kit installed i should have went with something a bit more aggressive. But it has very good street manners!

        Helpful (4)
      • September 05, 2019

        5 1989 GT - LawrenceM Installation Time: Afternoon

        X3ooh wee

        Works great no vacuum issues my engine was out and ready but i have done 5.0 cams in an afternoon before but take your time

        Helpful (3)
      • April 25, 2019

        5 1991 LX - Rocaso1985 Installation Time: Afternoon


        Fast delivery and best price around. Was really easy to put on and see result

        Helpful (4)
      • March 19, 2019

        5 1989 GT - 327 Installation Time: Afternoon

        X cam

        Everything I need for a quick burst of speed. As always with Ford Motorsport there was no guessing. I knew the RPM range I needed to stay in and the X cam was just right.

        Helpful (4)
      • March 13, 2018

        5 1990 GT - JOSHG Installation Time: Weekend


        great bang for the buck,nice lopey idle pulls hard up to 6500!

        Helpful (13)
      • April 27, 2017

        5 1992 Other - JoeD

        Joe DeMaria

        Love my new cam .Great performance .Built 5.8 EFI be smart stick with Ford parts .U won't be sorry . Dagreed in 25 minutes Runought valves .Lots of low-end torque.great gas mileage to .1days work .1992 Ford 150 flareside

        Helpful (20)
      • August 27, 2015

        5 1989 GT - onex475 Installation Time: Less than 1 Hour


        I am rebuilding my 302 and decided to go with the X303 cam. Since I am still puttingt he engine together I don't know how much power gain I have yet. I can't wait to fire it up and see hows he does.

        Helpful (21)
      • November 18, 2014

        5 1993 Other - JoshET2SS Installation Time: Afternoon

        Good product

        Thanks again, I know I can count on AM. I have done business with you guys quite a bit over the years always a great experience.

        Helpful (19)
      • December 14, 2011

        4 1994 Cobra - Cobra2 Installation Time: Weekend

        X303 is a great value

        a good performance cam with a fairly lopey idle, even with the stock efi eecIV. makes about 15inches of vacuum at idle. may require IAC plate to help adjust idle. great sounding cam with a lot of topend power. don't forget to install new lifters with the correct length pushrods.

        Helpful (28)
      • December 07, 2011

        4 1987 GT - Rueb Installation Time: Full Day

        Pretty good for the money.

        The cam is calm and streetable until 4000 RPM and then its like a supercharger kicks in. Just wish some of the power could be harnest a bit earlier.

        Helpful (25)

      Questions & Answers (16 answers)

      5 Top Rated Questions

      I have a stock block with gt40x heads,ford racing rocker arms, ford racing hardened pushrods. My question is will I have to worry about valve clearance if I install this cam. I’m currently running a f303 cam now with no issues.

      • Using the Ford Performance X303 Performance Camshaft with stock pistons, and GT40x heads we do recommend checking piston to valve clearance with the X303 cam.

      Helpful (3)

      Can this can be used with a carburetor?

      • The Ford Performance X303 Performance Camshaft will work with a carburetor set up. If you have any other questions or concerns feel free to call or chat in.

      Helpful (2)

      I am building a 331 stroker. I have Trcikflow highport 64cc heads with 192cc runners will this cam work with this set up and if so what is the injector size?

      • The Ford Performance X303 Performance Camshaft will work with your 331 stroker and Trickflow High Ports, however it will not be ideal. A cam such as the Comp Cams Stage 4 Xtreme Energy XE274HR Camshaft would be more beneficial for your setup with its split duration. Injector size will vary based on the rest of your setup, but will typically be between a 24lb/hr or 30 lb/hr.

      Helpful (1)

      I have a 88 GT with 89 engine.i was told by the seller that it had a stock lower end and cast victor senior heads. Idle brac intake and 65 millimeter throttlebody with 24 lb injectors.I am looking for good strong cam that will come in from 1500 and be strong pulling up to 6000.The heads have 202 with 160 valves.What would recommend.Thank’s

      • The Ford Performance X303 Performance Camshaft may not be the best cam for your setup, however we would need more information, such as the cylinder head part number to determine intake and exhaust runner volume, combustion chamber size, etc. We would also need to know the specific intake manifold, and if the car is automatic or manual, and if automatic, the stall speed of your torque converter. Please contact our customer service department so that we may best assist you with this.

      Helpful (1)

      Will this camshaft work with ford 1.7 rocker arms? or will i need to go down to 1.6 rocker arms? running on stock heads.

      • The Ford Performance X303 Performance Camshaft is designed for use in the 1985-1995 5.0L V8 Mustangs with 1.60 rockers only.

      Helpful (1)
      Post Your Question
      10 More Questions
      I have a 1988 lx 5.0 fuel injection HO with speed density. Will this cam work for me? Without any modifications? Thanks in advance. 0 answer
      I am building a 347 with 205 victor heads with eagle rotating assembly h beam rods and JE pistons. will this x 303 be a good cam for my set up. and if I wanted to go pro charger later will this cam work or will I have to change to different cam. 0 answer
      I have a 331 ci stoker with flat top pistons. the valve cutouts are much deeper than stock I have pro comp heads with 190 cc runners and 64 cc chambers. This mustang is for track use only. Will the X 303 give me 40-50 extra HP or do you recommend a different cam? I currently have a E303 cam in it. I am using a C6 transmission and 4.30 gears. 0 answer
      Which firing order does this cam use? 1 answer
      I have a stock 88 5.0 what should i do to make it work with that camshaft? 1 answer
      What length pushrods do I need ? My stock rockers and pushrods are not working. 1 answer
      What kind of valve springs would you recommend for this cam? 1 answer
      I have a mustang 1986 original fuel injection do I have to make any modifications for this camshaft? 1 answer
      Is this cam compatible with 1.7 rockers? 1 answer
      Will 24 lb. injectors work for this cam profile ? mods are 331 stroker kit, twisted wedge heads and intake, shorty headers 1 answer

      Installation & What's in the Box

      Installation Info

      What's in the Box

      • (1) Camshaft

      Tech Specs

      Ford Racing Data Sheet
      Part Number: M-6250-X303 Rocker Ratio: 1.60
      Lifter Type: Hydraulic Roller Lifter Engine Type: FORD 5.0 (1985-1995)
      Lobe-Center Int. 107° Lobe-Center Exh. 117°

      Intake Exhaust
      Valve Lash: Hyd. Hyd.
      Duration: 286° 286°
      Duration @ .050" Lift: 224° 224°
      Valve Lift: 0.542 0.542
      Lobe Lift: 0.339 0.339

      Valve Timing @ 0.05" Lift: Open Close
      Intake: 5° BTC 39° ABC
      Exhaust: 49° BBC 5° BTC

      Will It Fit My Mustang

      • Cobra - 93, 94, 95
      • Cobra R - 93
      • GT - 87, 88, 89, 90, 91, 92, 93, 94, 95
      • LX - 87, 88, 89, 90, 91, 92, 93
      • Other - 85, 86

      Fits 1985-1995 5.0L V8 Mustangs with 1.60 rockers

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