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Ford Performance B303 Performance Camshaft (85-95 5.0L)

Item 24068
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    Features, Video & Details

    • Street Performance
    • Excellent Replacement Cam
    • Hydraulic Roller Lifter
    • Sold Individually
    • For 1985-1995 5.0L with 1.60 Rockers

    Review & Installation Video

    Review & Install Video

    Street Performance. This Ford Racing cam is a excellent replacement choice for good low-end torque, a significant increase in top-end power above 4,000 RPM, and a fair Idle.

    Legendary Ford Racing Quality. When you're adding performance parts to your Pony, you can't go wrong by installing parts from the folks that know it best. Ford Racing's legendary quality ensures a perfect fit and years of hassle-free use.

    Required Upgrade. This Ford Racing B303 Performance Camshaft requires upgraded valve springs for proper operation. Valve spring requirements: 120 lbs valve seat pressure minimum 295 lbs open. For stock cylinder head applications, the use of Ford Racing M-6513-A50 valve springs installed at 1.820" are recommended. For use with aftermarket cylinder heads, Ford Racing M-6513-BH valve springs are recommended.

    Application. The Ford Racing B303 Performance Camshaft is designed for use in the 1985-1995 5.0L V8 Mustangs with a roller cam block and 1.60 rockers.

    Technical Notes. Ford Racing recommends the use of a Hi-Stall torque converter for Mustangs equipped with automatic transmissions. Performance camshafts work only on EFI engines with mass air induction systems.

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

    MPN# M-6250-B303

    CA Residents: WARNING: Cancer and Reproductive Harm -

    What's in the Box
    • (1) Camshaft
    Installation Info
    Tech Specs
    Ford Racing Data Sheet
    Part Number: M-6250-B303 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: 284° 284°
    Duration @ .050" Lift: 224° 224°
    Valve Lift: 0.480 0.480
    Lobe Lift: 0.300 0.300

    Valve Timing @ 0.05" Lift: Open Close
    Intake: 5° BTC 39° ABC
    Exhaust: 49° BBC 5° BTC
    Will it fit my Mustang?

      Customer Photos (2) Submit Your Photo

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        Questions & Answers (29)

        5 Top Rated Questions

        What's the correct pushrods Length for this B303 application. I have a stock bottom end with gt40heads intake, new comp cam springs and valve seals, edelbrock 1.6 rockers ?

        • The Ford Performance B303 Performance Camshaft will allow for the stock pushrod length to properly fit. The GT40 Heads will also accept the stock length. If you would like to upgrade your pushrods, we would recommend the Ford Performance brand which I have provided the link for you.

        Helpful (2)

        Have a 95 gt with as far as I know, a stock engine. Looking for extra horse power without breaking the bank. AKA my wife. So if I install this cam will all other stock components work with it? Also how much extra hp can I expect? Thx. Alan

        • You would need upgraded valve springs with these camshafts to get the correct seat and open pressures for the valves. There would be an expected up to 30-40 hp gain with this cam.

        Helpful (2)

        What comes with this B303 cam? Do i have to purchase the 1.60 rockers seperate?

        • Correct, rockers are not included with this B303 cam.

        Helpful (2) Show 2 more answers

        can u use 1.7 rockers to get a little more lift

        • These are only compatible with 1.6 rockers.

        Helpful (1)

        Is it very necessary to replace the rockers?

        • This cam would be designed for the 1.60 rockers. If you do not have the 1.60 rockers you would want to look into changing the rockers out.

        Helpful (1)
        10 More Questions
        b303 w/ speed density I own a 87 Gt Convertible with speed density. is this cam working or I need to swap to MAF? Someone says it has hunting idle problems and drivability issues....thanks 1 answer
        what torque converter and valve springs do i need? 0 answer
        I have 95 5.0 that I am the upgrading heads but I am converting it over to a carburetor fuel system. Will this cam and roller lifers still work with the carburetor. 0 answer
        can i use this in a 94 351w roller 0 answer
        what size stall converter needed for this cam 1 answer
        What valve springs and locks do you recommend for installing the B303 in a stock 1995 Mustang GT 5.0? The springs I see all recommend an installed height of 1.8", the stock springs on the 95 are installed at 1.6". It looks like the grooves on the exhaust valves are machined lower than on the intakes. 1 answer
        Will the b303 work with stock push rods and rocker arm on a 1986 ford mustang gt 5.0 302? 1 answer
        Hey A.M. I have a 94 gt. The pushrod Windsor 5.0. OK so got all the bolt on's ect. Besides the 1.60 rockers do I need to make other adjustment's on my engine? MAF? Compatible with stock cylinder heads? 1 answer
        will the b303 or the e303 camshaft work in a 1986 mustang gt 302 ho with flat top pistons 1 answer
        If I’m going to put this cam in my car do I need to get it tuned or will the bama chip make everything run smooth? 1 answer

          Customer Reviews (27) Write a Review

          Overall Rating 5

          out of 5 stars

          Installation Time:Afternoon

          Installation Cost:$250-$500

          • Performance Gain 4.590909 4.6
          • Fit 4.818182 4.8

          • 5/5

            Installation Time: Full Day

            March 24, 2019

            Better performance

            I note a good performance after change b303 is very nice


            Year: 1987 Submodel: GT

            Helpful (0)

          • 5/5

            Installation Time: Full Day

            January 04, 2019

            Bcam mafia

            Yet to install but i needed for than just valve springs to do this .you should a brand top end for whoever is thinking about getting a csmshaft.lifters.pushrods.rockers


            Year: 1989 Submodel: LX

            Helpful (3)

          • 5/5

            Installation Time: Afternoon

            August 01, 2018

            B303 cam awesome

            the price and being an original ford part was outstanding


            Year: 1995 Submodel: GT

            Helpful (6)

          • 5/5

            Installation Time: Afternoon

            May 12, 2018


            Just got done break in, good power range with my set up has a nice chop to it too


            Year: 1988 Submodel: GT

            Helpful (7)

          • 5/5

            Installation Time: Weekend

            April 12, 2018

            Great bang for your buck

            This cam install was pretty straightforward and went pretty smooth. I paired this cam with a set of heads as well. Granted it does take the computer awhile to adjust its self without a tune I did bump the timing up 2 degrees and installed a Wideband just for safety. If you’re debating whether or not you should by this cam stop! This is a must have for any fox. Thank you American Muscle for always putting out great products.


            Year: 1990 Submodel: LX

            Helpful (10)

          • 5/5

            Installation Time: Afternoon

            April 03, 2018

            B303 Camshaft

            After hearing one of my friends car with this cam I had to have it for mine. Now this thing sounds like a monster. I love it.


            Year: 1990 Submodel: GT

            Helpful (10)

          • 5/5

            Installation Time: Full Day

            October 05, 2017

            Great Upgrade

            Cam gave my 1995 Mustang an increase in horse power. Love the throttle response I now have


            Year: 1995 Submodel: GT

            Helpful (13)

          • 5/5

            Installation Time: Afternoon

            July 05, 2017


            Got this to replace my old cam, came fast and is of great quality. Can't wait to install it to hear it.


            Year: 1988 Submodel: LX

            Helpful (10)

          • 5/5

            Installation Time: Afternoon

            April 24, 2017


            The Ford Performance B303 was a great upgrade for my gt40p 302 build, it really gave it nice low end torque and choppy idle everyone loves.


            Year: 1989 Submodel: LX

            Helpful (17)

          • 5/5

            Installation Time: Afternoon

            April 19, 2017

            Great cam

            Have used it before in other builds,great pulling power,sounds good at idle...


            Year: 1987 Submodel: GT

            Helpful (12)

          • 5/5

            Installation Time: Less than 1 Hour

            March 02, 2017


            The cam looks great and soundsee great. American muscle thank you soo much for valuing your customers. Can't wait to finish my car


            Year: 1990 Submodel: GT

            Helpful (10)

          • 5/5

            September 05, 2016

            Great cam!!

            Love the sound you get from this cam!! And for the price, you can't beat it. Also, you're getting genuine Ford quality parts. This is the 3rd b303 cam I've had in a mustang.


            Year: 1995 Submodel: GT

            Helpful (12)

          • 5/5

            August 21, 2016

            I love it

            This cam was a bit of a pain to install. But the end result is a nasty lope, a few horses, and better throttle response. The fox breaks more necks than ever.


            Year: 1991 Submodel: GT

            Helpful (12)

          • 5/5

            Installation Time: Weekend

            October 23, 2015

            Great loping cam good for beginning setups

            I paired this cam with a pair of GT40P port and polished heads with 1.7 roller rockers and a tune from Bama. Wow the cam really brings the power from 1500 to 6000 rpms and has a nasty lope at idle. Very happy with the quality of the product.


            Year: 1995 Submodel: GT Chico, CA

            Helpful (16)

          • 5/5

            Installation Time: Afternoon

            August 28, 2015

            Great Sound!

            This cam has a Great Sound! I have put this cam in several cars and always Satisfied.


            Year: 1983 Submodel: Other King, NC

            Helpful (10)

          • 4/5

            Installation Time: Full Day

            August 27, 2015

            1993 gt 5.0

            I debated between the b303 and the e303 and I'm completely happy with the b303. Best sound with the best power for the best price. Could not be happier


            Year: 1993 Submodel: GT Rockford Ohio

            Helpful (15)

          • 5/5

            Installation Time: Shop Install

            Installation Cost: $250-$500

            August 27, 2015

            B303 Ford Racing Cam

            Very nice for street cam, with 24 lb injectors and Mass Air, is a great performer. Idle is bumpy but still smooth but definitely not OEM smooth. Sound nice also from 2800 - 5500 RPM. I definitely made right decision to install it. . Bob N


            Year: 1990 Revere, MA

            Helpful (14)

          • 5/5

            Installation Time: Full Day

            December 18, 2014

            Fast shipping

            American muscle shipped it fast as always. Great product!!


            Year: 1995 Submodel: GT Metamora, MI 48455, USA

            Helpful (11)

          • 5/5

            Installation Time: Afternoon

            August 26, 2014

            Very Lumpy

            This cam is great for street rods. It has a very lumpy idle and a great overall sound. It also has a nice performance gain. I would definitely recommend this cam. It is 10x better than a stock cam.


            Year: 1990 Submodel: Other Monteagle, TN, USA

            Helpful (16)

          • 5/5

            Installation Time: Less than 1 Hour

            April 25, 2013

            Great Cam, can't go wrong with Ford Racing

            The cam itself didn't take all that long because the engine was on a stand getting rebuilt. If it was done in the car i would think it would take significantly longer. The fit was good and it has a great idle and power band.


            Year: 1992 Submodel: GT New Hampshire, USA

            Helpful (14)

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