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Ford Performance E303 Performance Camshaft (85-95 5.0L)

Market Price $226.99 You Save 12% ($27.00)
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  • Item 24069
  • MPN# M-6250-E303

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    Features, Video & Details

    • Improved Street Performance
    • Great for Naturally Aspirated Mustangs
    • Hydraulic Roller Lifter
    • Sold Individually
    • For 1985-1995 5.0L with 1.60 Rockers

    Review & Installation Video

    Review & Install Video

    Hello and welcome back to Stage 3 of AmericanMuscle’s project Foxbody, as you can see we’re currently out enjoying the fruits of our labor which took place in the first two stages, and for the first time since we started this project, I can honestly say I’m not embarrassed to be out driving it. Of course a part of that lack of embarrassment is because we haven’t pulled up to anything fast yet, there’s no doubt our GT is looking good, but what’s the point of having all those Cobra parts if we don’t have the performance to back it all up, well, welcome to stage 3 my friends, where all of that is about to change. Before we get back to the shop where we lay out our plans to increase our tire slaying abilities, let’s recap what we knocked out in stage 2. In stage 2 we completely replaced our destroyed factory convertible top, with a brand new top and rear glass, along with just about every piece of molding and weather stripping you can think of, we put the finishing touches on our convertible Cobra vision, thanks to our Cobra tail light covers and 10th anniversary Cobra style wheels, made possible through the 5 lug conversion kit we installed. Finally, we moved to the interior and made it look as good as our exterior, thanks to the freshly painted dash, new carpet, and other miscellaneous items making our GT look and feel like it was 1993 all over again. Alright, I can’t wait to get back to the shop to show you all the stuff we have in store for this stage, let’s get to it. As you can see we have some big plans for our 302, all with the goal of replicating the Cobra’s power plant, which is going to drastically improve our performance. For starters, we’re going big with a trio of parts from Ford Racing, all of which will do wonders for our 5.0. First up we’re looking at the Turbo Swirl GT40X aluminum heads from Ford Racing, these heads are a variation on the original GT40 heads found on the 93 Cobra, with a few improvements. For one they’re made out of lightweight aluminum versus the heavier cast iron and they’re designed to flow much better than the original GT40’s. To top it off, we’ve installed some Cobra valve covers. For us to see the biggest gains using these heads, our stock cam just isn’t going to cut it, so we’re going to go with a popular street cam, the Ford Racing E303. This hydraulic roller cam should really compliment those GT40’s, and is an excellent choice for any street car thanks to its low to mid range torque. Of course we’re still going to have that great lope at idle which should sound amazing by the way, but it’s not radical enough that we’re going to have to worry about stalling out at every red light. The cheery on top for our 302 has to be this Ford Racing intake manifold, which is getting nearly impossible to find anymore, this part, paired with our Ford Racing heads and cam, is going to allow our 5.0 to flow some serious air, and will complete our Cobra transformation under the hood. Alright, in order to move all that extra air out of the engine, we’re reworking out entire exhaust from the headers all the way back, in order to keep up with that Ford Racing theme we’ve got going on under the hood, we selected our ceramic shorty headers, which we’d already installed when we did all of our motor work, and are designed to work specifically with those GT40 heads. From there, we go to BBK’s off road H pipe which does feature mandrel bent 2.5” stainless steel tubing, and should bolt up to those shorty headers without issue. Finally, everything’s going to exit out of Flowmaster’s American Thunder Cat-Back exhaust, which features those iconic 44 series mufflers. This exhaust features 100% stainless steel constructions throughout, including 2.5” mandrel bent tubing, and those OE style polished tips. Alright I think it’s safe to say we’ve got the performance side of things pretty well taken care of, but we haven’t addressed the fact that this thing still handles like a boat. So we’re going to attack our suspension much like we did our engine, go big or go home. Ron and I are just finishing up installing the KONI STR shocks and struts, which are actually a killer set for the price. We’re pairing those up with the SR Performance lowering springs, which should lower our Fox about an inch and a half on all 4 corners. Finally, we have the car in the air, the wheels off, we figured this would be a great time to ditch those rusty old drum brakes, in favor of these brand new disks. To dial in our new Fox’s alignment, we’ve installed the SR Performance caster/camber plates, which should get everything back into spec without issue, and offer a little bit more adjustment in future if need be. Since our car is a convertible, we are losing some of the structural rigidity which comes along with having a steel roof, to help combat this, we’ve installed the SR Performance subframe connectors, this part along with our springs, shocks and struts, should take all the laziness out of our suspension, and get it handling like a sports car should. Alright, now everything’s pretty much buttoned up, we’re going to tie it together with one of our custom Bama tunes, and see if all this hard work has paid off in really cranking up the power. We’ve already grabbed our baseline run after stage 1 when we got the car back from painting, so I’m going to hop in, bury this thing one more time, and see what the improvements are. Alright, our baseline run with our 93 GT gave us 194 horsepower, and 266 ft/lbs of torque. With all of our stage 3 modifications, the car put down an impressive 279 horsepower, and 317 ft/lbs of torque, making for a solid gain of 85 horsepower over our baseline numbers. The car did even better throughout the power band, picking up as much as 103 horsepower, and 107 ft/lbs of torque, throughout the curve. With the power finally there to back up our Cobra appearance, I think it’s time for one more cruise to see how our Fox does with all its modifications. Alright, stage 3, performance, check. The car's breathing better, the tune brought it all together, and as a result, this thing has some serious balls. Here we are, we’re in the back roads, moving along at a good clip, I’d saying the car is doing quite well, it’s pretty confident, I feel confident driving it, I don’t feel like I’m going to fly off the road, which I couldn’t have said before we did all this work. The car feels good, sounds awesome, and it’s just a whole hell of a lot more fun to drive. I know some people might question this build, you know, why a convertible, why a Fox body, well, because we wanted to, I mean that’s what car building is all about, it’s doing what you want. In this case, we’ve never seen Cobra convertible Fox bodies, so we wanted to build one, and I think we did a hell of a job. So is this the last you’ve seen of this car? I don’t know, maybe, maybe not, but in the meantime, thanks for watching stage 3 of AmericanMuscle’s project Fox body.

    Street Performance. This Ford Racing cam is a great replacement choice for excellent Low and Mid Range Torque, and a Good Idle. The Ford Racing E303 Performance Camshaft is also a great choice for naturally aspirated 5.0 Mustangs.

    Installation Note: This Ford Racing E303 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 E303 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.

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

    What's in the Box
    • (1) Camshaft
    Installation Info
    Tech Specs
    Ford Racing Data Sheet
    Part Number: M-6250-E303 Rocker Ratio: 1.60
    Lifter Type: Hydraulic Roller Lifter Engine Type: FORD 5.0 (1985-1995)
    Lobe-Center Int. 110° Lobe-Center Exh. 110°

    Intake Exhaust
    Valve Lash: Hyd. Hyd.
    Duration: 282° 282°
    Duration @ .050" Lift: 220° 220°
    Valve Lift: 0.498 0.498
    Lobe Lift: 0.311 0.311

    Valve Timing @ 0.05" Lift: Open Close
    Intake: 0° BTC 40° ABC
    Exhaust: 40° BBC 0° BTC
    Will it fit my Mustang?

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    Customer Photos

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    37 Questions / 8 Answers

    Ask a Question

    will i need to get a tune with this cam?

    Andrew

    • This Ford Performance E303 Performance Camshaft will not require a tune, however, a tune would be beneficial to get the most out of the upgraded camshaft.

      AMJEFF

    Helpful (1)

    i have a 5.0 out of a 93 bronco, i am putting it in my 89 mustang. will this cam work in that engine?

    bryanw

    • Hello! Unfortunately, we can only confirm fitment for a 85-95 5.0 Mustang.

      VincentV

    Helpful (1)

    Can I run this cam with a turbo?

    nostang83

    • Yes, this cam is actually very good with turbos, I have it in my 89 TT. Sounds awesome too!

      Logan50

    Show 2 more answers Helpful (1)

    I am building a high comp 331 stroker! The dome pistons i have selected are +9.0cc, and stock heads for now with stock lifters, Do I need to worry about piston to valve clearance? And is this an appropriate cam for a cruiser/weekend warrior?

    cwilson93

    • need to always check piston to valve clearance !

      bigboss

    Show 2 more answers Helpful (1)

    im looking for some good upgrades

    DevonH

    Hello, I own a 1994 Cobra and I plan on keeping the stock 1.7 ratio rocker arms. I am going to use this E303 camshaft (M-6250-E303) with the GT40X 58cc (M-6049-X307) cylinder heads AM offers. Can I go ahead and order these pushrods (M-6565-L302) here on AM or will I need a different length? Thanks in advance, Zachary

    96MustangGT

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    Customer Reviews (30) Write a Review

    Overall Rating 4.8

    out of 5 stars

    Installation Time:Weekend

    Installation Cost:$500-$1000

    • Performance Gain 4.521739 4.5
    • Fit 4.913043 4.9



    • 5/5

      Installation Time: Afternoon

      April 12, 2018

      Great Cam

      This a perfect cam for good torque and good midrange power. Perfect for daily street use. Gives a good muscle car throaty sound. I've used this in a Fox Body and SN95. A very good affordable cam.

      AndrewP

      Year: 1994 Submodel: GT

      Helpful (1)

    • 4/5

      Installation Time: Afternoon

      December 01, 2017

      Good for the money

      The instal was straight forward tho the results felt a little different than expected. At first it felt slightly improved but I think that was on part of the computer after about 1hr breaking in so the computer learns the new specs the performance increases another bit.

      JoseR

      Year: 1990 Submodel: GT

      Helpful (3)

    • 5/5

      Installation Time: Shop Install

      Installation Cost: $500-$1000

      November 03, 2017

      Perfect

      Put on some GT40P Heads with the upper and lower intake. Along with some other basic bolt-ons, and I can't wait to get it to the dyno to see how much power I'll make. This is perfect for street/strip use. Even though there are better cams out there this the best for the money, daily driveability.

      Carlos

      Year: 1995 Submodel: GT

      Helpful (2)

    • 5/5

      August 25, 2017

      Angry Muscle Car

      I can't express how much this cam has changed the way people view my fox. The performance and sound of my car has changed tremendously, I would highly recommend this to any foxbody owner!

      88fox

      Year: 1988 Submodel: GT

      Helpful (2)

    • 5/5

      Installation Time: Afternoon

      August 24, 2017

      E303

      E303 cam works great. Installed gt40 p heads, gt40 intake, e303 and car pulls now. Poor man build. Great upgrade from stock.

      Greasers1

      Year: 1990 Submodel: LX

      Helpful (4)

    • 5/5

      Installation Time: Afternoon

      August 20, 2017

      Im in Awe!

      I love this cam, its like I am driving a whole new beast!. This cam works great with my GT40 Heads and new lifters and push rods. Best purchase that iv made so far.. Maybe besides gears lol

      AustinC

      Year: 1993 Submodel: GT

      Helpful (2)

    • 5/5

      April 11, 2017

      Great product!

      This is a good bang for the buck. Nice sound and great performance upgrade.

      Stangboy89

      Year: 1990 Submodel: LX

      Helpful (2)

    • 5/5

      April 05, 2017

      E303 cam

      Have not installed it yet however I have had many many mustangs in the past and has always been my go to camshaft. Can't wait to get it on there with the new headers and other parts

      SeanT

      Year: 1995 Submodel: GT

      Helpful (2)

    • 5/5

      Installation Time: Weekend

      March 20, 2017

      94 GT carbureted

      I'm more than satisfied with the E303 cam. It takes a little to kick in but great for the streets. It sounds great at idle.

      Chris

      Year: 1994 Submodel: GT

      Helpful (3)

    • 5/5

      Installation Time: Weekend

      February 22, 2017

      Awesome!!

      This is a really good street cam. take a little bit for it to kick in but its well worth it :)

      TJ

      Year: 1994 Submodel: GT

      Helpful (5)

    • 4/5

      Installation Time: Weekend

      February 07, 2017

      Solid cam!!!!

      This a a very good street cam or strip cam. Installed in my 94' cobra, idle sounds a lot better from stock and am getting a lot of low end torque and high rpm power! Great product. Ford Racing!

      Grant

      Year: 1994 Submodel: GT

      Helpful (5)

    • 5/5

      August 13, 2016

      E 303

      Got the camshaft have not installed it yet but I'm pretty sure it will sound good from the reviews I've read thank you American Muscle.

      Dee

      Year: 1986 Submodel: GT

      Helpful (5)

    • 5/5

      Installation Time: Afternoon

      May 30, 2016

      Cam

      This cam was very good for power and also the lopey sound everyone likes to hear. Had no regrets with this one will be doing more business with them

      Bighoss

      Year: 1989 Submodel: GT

      Helpful (2)

    • 5/5

      Installation Time: Shop Install

      Installation Cost: $250-$500

      April 04, 2016

      Awesome upgrade

      This cam was just what the doctor ordered . Great sound great performance

      Radarluv

      Year: 1985 Submodel: GT

      Helpful (4)

    • 5/5

      Installation Time: Full Day

      December 29, 2015

      Nice cam for the price, sound amazing. ..

      Sounds good.....installation wasn't bad.. got my parts quickly wat i thought. ....

      furious

      Year: 1994 Chesapeake

      Helpful (4)

    • 5/5

      Installation Time: Afternoon

      July 20, 2015

      got this for gt40 setup

      Bought this cam for a new 308 build good cam sounds good...easy install I also added ford racing lifters when doing this. This cam really need gears

      glenn92lx

      Year: 1992 Submodel: Other leland NC

      Helpful (4)

    • 4/5

      Installation Time: Shop Install

      May 19, 2015

      Great sound top end.

      The E-cam is a great top end performer. I don't quite agree with the claim of "excellent Low and Mid range torque". Mid range perhaps but imo this cam doesn't really start to sing until beyond 2,500 rpm. However, once it hits it's sweet spot it screams. I'm running a 4.10 so it gets there in a hurry. The best part though has to be the sound. At idle, cruising speeds and beyond, it snarls. I've had guys back off just because of the way it idles. Of course a lopey idle doesn't make you unbeatable but it was a nice ego boost! For exhaust I'm running BBK LT's, H-pipe and Magnaflows. FYI, this combination has passed California smog test at certified, smog only locations.

      GeraldP

      Year: 1990 Submodel: Other

      Helpful (5)

    • 5/5

      Installation Time: Shop Install

      Installation Cost: $500-$1000

      December 12, 2014

      Good cam, for my application

      My application is a street rod daily driver. I have almost every engine upgrade you can think of besides a power adder. Got everything from AM because it was cheaper then everywhere else. Anyways this cam is good for a daily driver or a car that sees strip time sometimes. The reason I got this cam is because I knew it was a bolt in and I wouldn't have to modify my pistons. I have a decent tune in my car right now, and the cam actually feels somewhat radical. It sounds a little louder then stock and I have to keep my foot on the pedal at a red light to keep it from stalling out. This cam does not like power bands between 2200 rpm WITHOUT a tune. This cam practically begs the driver to apply gas. With my tune the car shakes a lot unless I give it gas. Overall good cam. I recomened if you want a reliable daily with a silky smooth install. If you want more power I suggest going with comp.

      Dmcj

      Year: 1995 Submodel: GT bay area

      Helpful (5)

    • 5/5

      Installation Time: Full Day

      June 16, 2013

      E303

      Great street/strip cam. Good mid range pull. Lopey idle. Combined with long tubes, o/r X or H pipe and dumped exhaust. Don't expect to get your order right through the drive-thru. Because they won't be able to hear you.

      Davidson

      Year: 1997 Submodel: GT Kansas, USA

      Helpful (5)

    • 5/5

      Installation Time: Shop Install

      Installation Cost: $250-$500

      April 27, 2013

      great cam for sn95 stangs

      this cam has made my car come to life,,my 306 is running great with this cam,,lots of top end and great bottom end,,it shuts up a lot of corvettes,, a must for all 5.0 owners

      kholman

      Year: 1994 Submodel: GT louisville,ky

      Helpful (6)

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