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Comp Cams Stage 3 Xtreme Energy XE270AH Camshafts (96-04 GT)

Market Price $645.99 You Save 12% ($74.67)
Our Price

$571.32 (pair)

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  • Item 30100
  • MPN# 102600

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Features, Video & Details

  • Great Mid-Range Gains
  • Big Loping Idle
  • Strong Vacuum
  • Streetable Cam Design
  • Fits 1996-2004 Mustang GTs

Review & Installation Video

Review & Install Video

Hey, guys Adam here with Today, I'm bringing you a detailed overview and installation of the Comp Cams Stage 3 Xtreme Energy XE270AH Camshafts which are available for all '96 to '04 Mustang GTs. So in this video, I'll be going over the sound you can expect at idle from these cams as well as the power gains when adding them to your GT. On top of that, I'll talk about the application and the street drivability, if any, with the cams. And I'll top the video off with the installation. I'll let you know up front that's going to get a full three out of three wrenches on a difficulty meter. This one is probably going to be best left up to the professionals or the guys who really have the mechanical expertise to get it done. The Comp Cams Stage 3 Xtreme Energy XE270AH Camshafts should be on the build list of any modified and '96 to '04 GT owner who's looking to really improve their mid-range gains in the horse power and torque area as well as pick up a pretty hefty noticeable lope at idle. So it's a pretty well-known fact when we're talking about valve train technology that Comp Cams is one of the industry leaders in that field. So no-brainer to look in their direction if you're looking to pick up a bigger cam. Now for your single overhead cam, two valve motor, if you are looking to pick up that bigger cam you can expect bigger gains when it comes to the mid-range power band as well as picking up a bigger heftier lope at idle to really give it that muscle car sound. Everything I just mentioned from mid-range gains to a heavy lope at idle is everything you can expect from the Stage 3 Cams from Comp Now, Comp lets us know that you can expect power to be ranging all across the power band from 1800 RPM to red line at about 5800 RPMs but of course, the bulk of that can be coming in and can be expected to come in the right around the mid-range like I mentioned before. Now, with that comes a heavier lope because this is one of the bigger cams given it's a stage 3, the XE270AH cam we have here, is gonna give you that heftier lope. You can expect a heavier noticeable sound when you're idling at that red light. Definitely, something you want from a stage 3 cam, something you want from a muscle car in general. So as I mentioned before in the beginning of the video, this is going to be geared more toward the modified 4.6-liter Mustangs. Simply because this one is a bigger heavier cam that does require a lot of support. Now, speaking of support, Comp Cams highly recommends picking up in addition to this the Comp Cams beehive valve springs to really support the proper installation and to prevent any clearance related issues you may have while installing these. On top of that, they also recommend picking up brand new valve spring retainers which of course can support everything that you have going on especially the high-pressure springs you'd be installing as new. All this is highly recommended you can get away with other brands but of course picking up a Comp Cams camshaft would definitely be supported by a Comp Cams spring as well as the Comp Cams retainers. Like I said some of those things you can do without, but it's highly recommended to pick those up. There's also a couple more things that are leaning more toward on the required side of things when you're installing these. They're basically designed for 355 gears or steeper and if you've got an automatic transmission, a 2,000 plus stall speed converter should be also installed as well just to get this running properly, that's more again on the required side of things. So, if you're picking these up, tack all those costs on to the final price there when you're shopping around. So when it comes those modified 4.6s there are a few things that you would already need to have on your Mustang in order to support the Stage 3 Cams including an intake, maybe a full exhaust of course the cold air intake, the throttle body, those things all put together tied in with the Stage 3 Cams will really maximize all of the performance. Just sticking a Stage 3 Cams on a completely stock 4.6 will not have this thing running the way it should be considering it's such a big cam, it needs those supporting mods. There is also one more thing I'm gonna throw at you. That is a very good idea to pick up which is going to be the adjustable cam gears. Now, when you're setting up a bigger cam like this, you are modifying the camshaft to crankshaft centerline position so adjustable cam gears can help you fine tune all those little details to make sure this thing is running at its maximum potential. Tying all those parts, I just mentioned together in addition to the 270 cam we have here, all of that can expect to make around 40 rear wheel horse power as well as 30 to 40-pound feet of torque. That's something a lot of the customers are claiming, who have reviewed the product and applied it to their own 4.6. Of course those numbers are just ballparked figures, it all depends on your personal modifications so don't expect exactly 40 horsepower, it may vary depending on your own setup. Just to give you a few more specs on these cam shafts. Just to give you an idea of what you're working with. At a duration of 50,000, you can expect 270 on the intake side and 274 on the exhaust side. Just to compare those numbers to the stock cam for the guys out there with non-PI heads, you have a 200 on the intake, 209 on the exhaust and of course guys with PI heads bump that up to 201 one on the intake and a 210 on the exhaust. Noticeable difference when compared to the Stage 3 Cams. So obviously there is a big difference there. Now with those big jumps from the factory duration to the duration of the Stage 3, 270 Cam, you can see exactly where the improvements are coming from. This is exactly what's going to produce that heavy loping sound at idle which is something a lot of people are striving for when picking up new cams. Some of you guys may be looking after the power gains. Some you guys maybe just looking after the sound gains. Some of you might be a little bit of both. I myself I'm more interested in the sound gains, but of course, if you're looking for the power it's there. If you're looking for the sound, it's definitely there. So this one is a good cam to cater to the guys out there who have modified 4.6s and are looking for best of both worlds. With that in mind, I do want to point out this is one of the more noticeable street cams available on the market. The Stage 3 Cam is probably coming around one of the last options as far as street drivability. This one gives you the heavier lope. It gives you a deeper lope at idle and noticeable sound and the power gains at mid-range, but of course, all that tied together still leaves you drivability as far as daily driving concerned, and it's something you can easily do on the street without running into any issues. Now if you move up to a stage 4 that might be a little bit of a different story. So the stage 3 might be the cutoff line there as far as the comp cams options are concerned. Now, if you are interested in picking up the sound and power that this combination makes, now you're looking at spending around $600 which is a very average price tag when it comes to the camshaft alone. Now, you get everything you see here literally just two cams for your single overhead cam motor. With that said $600, a very average price tag but you want to factor in all the additional pieces that you need to throw in to get this thing running properly. If you are going with the beehive valve springs that adds a little bit more pricing to it as well as the retainers to go along with that. Now, if you're going with third party options, you still gonna tack on that price here. And of course, if you're not doing this yourself as far as installation goes the labor tacks on even further. Now, If you are still interested you're getting power gains again around 3000, 3500 RPMs dead center in the middle of the power band there, were for the maximum potential this offers. Just to give you a solid idea of what to expect if you are looking to pick these up with the $600 and additional parts after that, expect to spend just north of $1,000 for a proper install if you've got somebody you know doing it for you or if you have a helping hand doing it yourself. With that said, if you going take it to a mechanic, expect another $1,000 at least for the labor alone. So, this is a pretty pricey install, this is why it gets the three out of three wrenches on the difficulty meter, but I'll touch on that install in just a second. So, this one is definitely going to test the tool box as far as the install is concern. It requires mechanical expertise. If you're not comfortable doing it yourself, no shame taking it over to a professional but then, of course, you're gonna have to tack on the labor cost because this one does take several hours if not a full day in the garage to complete. The three out of three wrenches on the difficulty meter can be attested to. Taken off the intake manifold, really dig into the cylinder heads by removing the valve covers, removing that crank shaft, pulley or spark plugs. It really goes the entire nine yards for this one which is why I get such a higher difficulty rating and takes so much longer to complete. Just to wrap up the overview and install we've got for you today, if you're the owner of a modified 96 to 04 GT, and you're looking to pick up one of the heftier lopes for drivable street cam. While also getting mid-range power gains close to about 40 rear wheel horsepower and 30 to 40-foot pounds of torque you might want to check out the Comp Cams Stage 3 Xtreme Energy XE270AH Camshafts which of course can be found right here at

Big Power Gains. If you're ready to take the next step in power mods but don't want to go with a forced-induction setup, Comp Cams Stage III Xtreme Energy Camshafts are a great addition to your Pony. They will give you great mid-range power gains in horsepower and torque. They are best suited to Mustangs with Performance Improvement Heads.

Streetable. This cam balances an aggressive profile with street driveability. When tuned, you'll still be able to drive your Pony around town to show it off to your admiring (or envious) friends and onlookers alike - and with a big sound even at idle this cam is guaranteed to turn heads.

Deep, Loping Idle. If you love the sound of a deep, loping idle, you won't be disappointed by this cam. Like the muscle cars of yesteryear, this cam yields a sound that will make lesser cars clear a path out of your way at lights.

Adjustable Cam Gears. Maximize the power from your new camshafts with a set of Adjustable Cam Gears, which will allow you the ability to fine tune your camshaft timing - a critical necessity when doing mods that can change your camshaft-to-crankshaft centerline position. Please see drop down option above.

Application. This SOHC Camshaft is designed for 1996-2004 4.6L two valve V8 Mustangs with 3.55 or steeper rear gears and a 2000 plus stall speed converter on automatic transmissions. Recommended for use with 4.6 two valve V8 mustangs with intake, exhaust, custom tuned computer, and valve spring upgrades.

Technical Note: The stage III cams are designed for modified cars that include upgraded valve springs for clearance related issues. It is recommended to use COMP Cams® 26113 Valve Springs for proper fitment. Combine the valve springs with a new set of valve spring steel retainers to handle the higher pressures developed by the springs.

Fitment: 1996 1997 1998 1999 2000 2001 2002 2003 2004 Details

What's in the Box
Hardware included:
  • (2) COMP Cams Camshafts
Installation Info
Tech Specs
Comp Cam Data Sheet
Part Number: 102600 Grind Number: XE270AH
Lifter Type: None - OHC Engine Type: FORD 4.6 and 5.4 SOHC MODULAR 2-V (1992-Present)
RPM Range: 1800 to 5800 Valve Timing : 0.05
Lobe-Center Angle 113 Intake Center Line: 109

Intake Exhaust
Valve Lash: Hyd. Hyd.
Duration: 270 274
Duration @ .050" Lift: 234 238
Valve Lift: 0.55 0.55
Lobe Lift: 0.3 0.3

Valve Timing @ 0.05" Lift: Open Close
Intake: 8 BTDC 46 ABDC
Exhaust: 56 BBDC 2 ATDC
Will it fit my Mustang?
  • Bullitt - 01
  • GT - 96, 97, 98, 99, 00, 01, 02, 03, 04

Fits 1996-2004 4.6L Two Valve Mustangs Only

People Who Bought This Item Also Bought

Most Helpful Reviews

Numbers Don\'t Lie

All the dyno charts I had seen on these cams showed good power throughout but not the highest total HP gain. I didn\'t want to lose bottom end so I selected these cams. I had the car dyno\'d before and ...

Read More
Helpful (87)


For my 2003 GT these cams are great!!! Note: Upgrade the valve springs, buy 2 stock crank shaft bolts to attach the cam shaft gears, yes Ford crank shaft bolts 12mm by 1.5 / 44mm long, and YES will need ...

Read More
Helpful (55)

Overall Rating 4.8 out of 5 stars
Read All 32 Reviews

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74 Questions / 12 Answers

Ask a Question

Do i need to buy the accessories options? I have two 2003 mustang gt both have stock motors which is the 4.6. only difference is that one is standard and the other is automatic, i was wondering if I could fit these cams in the motor without buying any of the accessories options?


  • I will assume that you are referring to springs, followers ,etc. It is always a good idea to replace the springs with the heavier springs and new followers recommended for use with this cam.


Show 3 more answers Helpful (9)

best cams for low modification wich biggest cams can put on my 4.6 stock engine for have rough idle great sound ? i want put air cold intake + trhottel 75mm and tuner ... no more modidification , maybe just replce spring cam head


  • The stage 2 came are a great up grade. I put them on my 2003 Mustang Gt.and it sounds like a monster. It gives u great mid range power also.I really love them and wouldn't change them.


Show 1 more answer Helpful (9)

Will these work on a npi motor? I'm trying to see how much power I can get out of my 97 Mustang GT without do a pi swap first.


  • these will work but dont expect to see numbers higher than the PIswap. the pi heads are made with larger flowing valves to help move air in and out of the engine to create that power


Show 2 more answers Helpful (4)

Will this affect my engine life? I have a 2002 GT, and plan on having this Stang for the long haul. I want a performance inhancing cam, but don't want to kill my motor any faster than I already am already by driving the car it was meant to be driven. Granted, a new motor will be in the works soon, but I still want to get everthing out of the 4.6 motor that I have right now.


  • I have these same cams on my 03 GT and it brought my car to the next level. Replacing original parts with new performance parts is always a good thing. It all comes down to how you drive it and take care of the regular maintenance stuff. If it's your dd, like mine is and you hop on it a couple times a day, you should be good. The one thing I have to deal with the most, is the constant smile on my face, because these cams are great!


Helpful (2)

Are these california legal?


  • These Comp Cams Stage 3 Xtreme Energy XE270AH Camshafts have not been tested or approved by the California Air Resource Board (CARB) meaning they are not legal for use upon road in the state of California.


Helpful (1)

I'm looking into buying these but first question with these work with stock pistons? Seems as if these are high lift cams? Also do these require a tune to use?


  • Hello! The Comp Cams Stage 3 Xtreme Energy XE270AH Camshafts will require different valve springs than stock due to the clearance issues. These cams will require a tune, for your mustang to run properly.


Helpful (1)

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Customer Reviews (32) Write a Review

Overall Rating 4.8

out of 5 stars

Installation Time:Weekend

Installation Cost:$1000+

  • Performance Gain 4.473684 4.5
  • Fit 4.947369 4.9

  • 4/5

    June 05, 2009

    Numbers Don\'t Lie

    All the dyno charts I had seen on these cams showed good power throughout but not the highest total HP gain. I didn\'t want to lose bottom end so I selected these cams. I had the car dyno\'d before and after and before the cams the car made 404 rwhp and 398 tq, after 492 rwhp and 430 tq!! The numbers don\'t lie, that\'s an awesome gain for the money! However, the car made much better power before 4500 rpm before the cams. The car really wakes up at 4500. Although Comp recommends 3.55 gears (which is what I have), I would go with 3.73s because even my supercharged 2V won\'t get out of it\'s own way on the highway in 5th gear. You can\'t compare the idle with these cams though, absolutely awesome! Car sounds super mean!

    D Smith

    Helpful (87)

  • 4/5

    June 21, 2010


    For my 2003 GT these cams are great!!! Note: Upgrade the valve springs, buy 2 stock crank shaft bolts to attach the cam shaft gears, yes Ford crank shaft bolts 12mm by 1.5 / 44mm long, and YES will need a tune or need a tuner with some knowledge how to use it. Other than that very peppy over stock PI and I am running stock injectors.


    Year: 2003 Submodel: GT

    Helpful (55)

  • 5/5

    February 18, 2010


    i installed these cams on my 97 gt and i have to say they are pretty amazing...the car is louder and alot more power in the higher rpms...the only problems i encountered was that the idle is very very low so if im stopped at a red light i have to be constently be pressing the gas to keep the idle up or it will stall out but thats without the custom tune so that might be y but dont let that stop you from bjying this product is still amazing!!! good job american muscle you guys have the best custumer service and for 580 its worth it


    Year: 1997 Submodel: GT

    Helpful (34)

  • 4/5

    January 22, 2010

    stage 2

    These cams are great but one thing you need to know. The stock cam gears are pressed on to the stock cams so you have to buy a new set of cam gears which are around $350. But the good thing is that the comp cams bolt on to the new cam gears.


    Helpful (33)

  • 5/5

    October 03, 2010


    I have these cams in my 03 gt, love the cam sound but the best part is hitting them higher rpm's and feeling the cams put you back in the seat again. Im running the stock intake but 24lbs injectors with the 4.10 gears pushing 325rwhp all motor no power adders.. highly recommend these cams great buy great power..


    Year: 2003 Submodel: GT

    Helpful (31)

  • 5/5

    July 26, 2010

    great bang for the buck

    these are a amazing buy for the price. you cant beat it. although they are a pain in the to install the reward is well worth it. I love the great deep exhaust note i have on my car. haven't gotten it tuned yet so i havent seen the best of the power gains but so far it is noticeable difference in the car. would tell anyone thinking about getting these to buy them in a second youll be happy you did


    Helpful (24)

  • 5/5

    May 15, 2011


    I paid to have it installed. They did it quick with no issues. I still have not dyno tuned it but it is nothing less than awesome sounds amazing, lost low end torque. But gained everywhere else! Would recommend to anyone.

    chris meier

    Year: 2001 Submodel: GT

    Helpful (15)

  • 5/5

    January 28, 2011

    Great hp gain

    these cams are a great modification to an engine, but there will not be a big noticable gain unless you upgrade other aspects of the engine, injectors (im running 30lbs), cold air intake, throttle body(im running a 75mm), ignition, plug wires, and the computer MUST have a tune to advance the timing, air to fuel ration...ect,you would have to buy a tuner and do it yourself or take it to a performance shop but that smore pricey...good luck with your stang :)

    450+ hp 1996 gt

    Helpful (12)

  • 5/5

    August 18, 2009


    Havent recieved a tune yet but I've already shaved 6tenths off my 1/4 mile. Simply awesome. The idle thump is like no other. I think I blushed the first time I heard it coming from my 02gt. With the right set up for air delivery and these cams you'll be more than pleased. Low end torque is lost a little yet more than makes up for ir in the higher rpm's, Especially around 4000. Great product!


    Year: 2002 Submodel: GT

    Helpful (10)

  • 5/5

    April 06, 2009


    Put these cams on my 04 GT and they are pretty sick. Makes the car shake and sound so nice, lots of power to boot


    Year: 2004 Submodel: GT

    Helpful (9)

  • 5/5

    Installation Time: Weekend

    October 06, 2011

    this was a great buy

    this is a great cam and good sounding the one thing i can help out with is the correct item #'s for the parts you will need if you are doing a engine build like me cause american muscles are old. the cam bolts (ford part #) F1AZ6A340A and the washers are F1AZ6278A as for the spacers i got from summit racing they sell them for 20 bucks. but if your looking for something to make your pony sound nice and its oyur dd i would definatly buy these for some good street use.


    Year: 1996 Submodel: GT Texas

    Helpful (7)

  • 5/5

    January 27, 2011

    sweet cams

    Put these cams in my port and polished PI heads allong with polished valves and stronger valve springs. Did the PI swap in my 96 GT and got it tuned by Dez Racing. The cams sound awsome! Not over done but very well pernounced sound. Nice power gains above 2,500 RPM all the way up. Highly recomended.

    Chris Wicklund

    Year: 1996 Submodel: GT

    Helpful (7)

  • 5/5

    December 01, 2009


    i installed these cams in my 04 gt. they make the car sound pissed off at idle. way more power in the higher rpms and i didnt need to change the valvesprings. i would go with a stage III cam instead though and swap out the valvesprings. all in all, these cams are worth the $580. they are a better investment rather than a hood or whatnot.

    jimmy z

    Year: 2004 Submodel: GT

    Helpful (6)

  • 5/5

    March 29, 2011

    good but bad

    Install isnt too difficult. But you gotta degree them to avoid PTV which means if you dont.know how to do is using gears you gotta buy the adjustable ones as well. Most def gotta upgrade springs which is.much easier to do with heads off. Just a PITA if your short on time. Sound is amazing but took 3 tear downs and 3 weekends. Do your research if this is your first cam unless you got a shop doin it which means more $. By then you shoulda bought a power adder


    Year: 2004 Submodel: GT

    Helpful (4)

  • 3/5

    Installation Time: Shop Install

    Installation Cost: $1000+

    June 27, 2017

    Nice Cams

    I bought the Stage 3 Comp Cams for my Saleen 2001 back in April 2013, and I just had the time to install them. They were kinda expensive to install but at the end it was worth it. Although I was expecting a bigger lope sound being a stage 3 Cams but nope, sounds close to stage 1 Cams, don't know what happened there and never checked the serial number or part number to verify it was indeed Stage 3 but anyways, the gains are still there.


    Year: 2001 Submodel: GT

    Helpful (3)

  • 5/5

    Installation Time: Shop Install

    Installation Cost: $500-$1000

    June 29, 2015

    amazing sound

    The sound of these cams are amazing! After the dyno my car is only at 300hp but it was a gain of 40hp to it. Which isn't alot compared to the amount I paid to get it all done including rear end and 3000 stall converter. But the lope of these cams is mean! Definitely recommend!


    Year: 2003 Submodel: GT Granite Falls, NC

    Helpful (3)

  • 5/5

    Installation Time: Full Day

    July 18, 2013

    Buy new bolts...

    The issue I had with install was the new cams don't take the same size camshaft bolts as stock...they take the 12mm crankshaft bolts. Make sure you order crankshaft bolts not camshaft bolts. If your motor is stock, you will most likely have piston to valve contact with these installed.


    Year: 2003 Submodel: GT Peru, IN 46970, USA

    Helpful (3)

  • 5/5

    Installation Time: Weekend

    June 25, 2017


    Great upgrade when paired with the long tube headers and OR H-pipe. Sounds great and very noticeable seat of the pants power boost. Definitely worth the time!


    Year: 2000 Submodel: GT

    Helpful (2)

  • 4/5

    July 09, 2014

    the parts your gonna need :)

    YOU DO NEED A BOLT AND WASHER... the stock bolt that comes out of the pi cams wont fit the comp cams stage 3 xe270ah cams. They just arent big enough.. so youll need to Buy 2 camshaft bolts: F1AZ-6A340-A ( this bolt is hard to find and has been discontinued so search the secound part number I listed right under this) Or F5RZ 6A340 B (I bought this bolt and it fit perfectly) _____________________________________ And 2 washers: F1AZ-6278-A And also do research on fidanza cam gears before you buy them.


    Year: 2000 Submodel: GT

    Helpful (2)

  • 5/5

    Installation Time: Weekend

    May 23, 2014

    early 2000 mustang gt

    Cams sound great, seriously!! Must Change the springs to beehive and adjustable cam gears. I had to ret#rd the cams to 4 degrees. Don't attempt installing them yourself unless your fairly knowledgeable and very patient! If your cam gears are pressed on you do need the Ford crankshaft bolts and washers to install the cam. Took about a week in total, a few hrs a day from start to finish. Do your research!!! They sound awesome!


    Year: 2000 Submodel: GT New Bern, NC, USA

    Helpful (2)

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