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Comp Cams Stage II XFI VSR Camshafts (05-10 GT)

Comp Cams Stage II XFI VSR Camshafts (05-10 GT)
5 Reviews 8 Answers
Market Price $829.41 You Save 12% ($95.42)
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$733.99 (pair)

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  • Item 30123

  • MPN# 127300

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Comp Cams Stage II XFI VSR Camshafts (05-10 GT)

Comp Cams Stage II XFI VSR Camshafts (05-10 GT)
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    Features & Details

    • For 05-10 4.6/5.4 Modular 3V
    • Serious Street Cam
    • Noticeable Idle
    • For Heavily Modified Street Mustangs
    • Big Gains Above 4600 RPM
    • Improved Throttle Response

    Product Resources

    Submit the first photo Customer Reviews (5) Questions (7) & Answers (8)
    Serious Cams for Serious Performance. If you're looking for a high lift camshaft for a highly modified street Mustang, these Comp Cams Stage 2 XFI VSR Camshafts are your answer. This serious street cam delivers big gains on highly modified cars with a noticeable idle. May not be street legal in all areas, please check your local laws.

    Big Gains for Modified Engines. We've heard of 30+ horsepower on modified vehicles with these cams. For these monster cams, you'll need new springs and get the best results with 3.90 rear gears and a 3000 stall speed torque converter.

    Compatibility. These camshafts are designed for the 2005-2010 4.6 and 5.4 Modular three valve V8 Mustangs. These cams require a spring upgrade and tuning is recommended.

    Tech Notes:

    Note: Want less extreme cams? Consider Comp Cams' Stage 1 cams. Got gears & converter but don't want to buy springs? Check out the NSR cams.

    Technical Note. The installation of these Comp Cams will require a phaser limiter kit and custom ECU programming.

    Fitment: 2005 2006 2007 2008 2009 2010 Details

    What's in the Box
    • (2) Camshafts
    Installation Info
    Tech Specs
    Comp Cam Data Sheet
    Part Number: 127300 Grind Number: XE261H-15.5
    RPM Range: 950 to 6400 Engine Type: FORD 4.6 and 5.4 SOHC MODULAR 3-V
    Lobe Sep Angle: 115.5

    Intake Exhaust
    Duration: 261 278
    Duration @ .050" Lift: 222 235
    Valve Lift: 0.49 0.48
    Will it fit my Mustang?
    • Bullitt - 08, 09
    • GT - 05, 06, 07, 08, 09, 10

    Fits 2005-2010 4.6L & 5.4L Three Valve Mustangs Only

    Most Helpful Reviews

    5/5
    These Cams are GREAT!

    I dont know about the last guy but when I installed these cams on my Procharged 05 GT I saw a HUGE difference in power just like AM says. The reason the last guy didnt see any gains was because, although ...

    Read More
    Helpful (17)

    5/5
    great bang for your buck

    to the guy above me. sounds to me like your cams are not timed right and possibly during the install that your cam timeing chains have sliped off the sproket at the crank. theres now way that you should ...

    Read More
    Helpful (9)

    Overall Rating 4.8 out of 5 stars
    Read All 5 Reviews

    Customer Photos

    Submit the first customer photo and get $5 off your next purchase!

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    7 Questions / 8 Answers

    Ask a Question

    Does anyone have a video or an audio clip of these running at Idle? I need to hear the idle before I buy a set.

    Intelinside419

    • Hello! If you search directly on Youtube for the Comp Cams Stage II XFI VSR Camshafts, you will find many videos of the camshafts, and different setups with them, to get a great idea on the sound.

      JacobC

    Helpful (0)

    Since my mustang is an 09 and the cam phaser limiters say only to an 07 do I still need the cam phaser limiters?

    redrocket

    • The phaser limiters are a recommended upgrade when upgrading your cams. The Comp Cams phaser limiter kit item #30139 will be able to work in conjunction as the manufacturer has confirmed fitment for a 2009 GT.

      KevinD92

    Helpful (0)

    Would I still need a 3000 stall converter and 3.90 gears if its supercharged or can I get away with stock gears for street and strip?

    SOHC

    • Hi, You will still need to upgrade the from stock gears and converter to help compensate for this cams aggressive lift and duration.

      Chris J

    Helpful (0)

    Why do you need a 3000 stall converter for?

    Cam

    • As a drag racer and an engine builder the cam center lines and duration @ 50 degrees and more do affect the lower rpm torque curves when automatic equipped. The car will leave flat if it doesn't get into torque curve IMMEDIATELY! It;s crucial in getting the car to respond with an automatic trans. The higher the stall speed the better the response. Use a MINIMUM 12,000 LBS rated trans cooler. It;s also crucial to make sure the camshafts are Degreed individually, the lower the center line of the cams the more response with lower stall converter, bigger camshafts bigger stall speed. I hope this directs you to get the necessary equipment and parts to be successful for your performance. I highly recommend beehive springs, you should be replacing the springs anyway with a new camshaft. Best of luck to your success!!!!

      MGCSR

    Show 1 more answer Helpful (0)

    will a regular tune from my hand held tuner be enough for these bad boys?

    pipi

    • I think you would see better results from a Dyno tune.

      JimRob

    Helpful (0)

    Custom Tune? If I have free tunes for life will AM be able to tune the cams with a e-mailed tune?

    Strang

    • I would recommend to get a dyno tune to fully harness the gain from the cams.

      stangcrim

    Show 1 more answer Helpful (0)

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    Customer Reviews (5) Write a Review

    Overall Rating 4.8

    out of 5 stars

    Installation Time:Full Day

    Installation Cost:$250-$500

    • Performance Gain 5 5
    • Fit 4.666667 4.7



    • 5/5

      August 18, 2011

      These Cams are GREAT!

      I dont know about the last guy but when I installed these cams on my Procharged 05 GT I saw a HUGE difference in power just like AM says. The reason the last guy didnt see any gains was because, although he had a lot of aftermarket parts these cams require engine mods, not just bolt ons. I am running bigger injectors, coils packs, a procharger, throttle body, and a custom tune. My car is reaching into the HIGH 10s with this cam and the procharger. I would HIGHLY recommend this cam to anyone looking to put some pep in their step. Thanks to AM for the quick shipping

      Bryan

      Year: 2005 Submodel: GT

      Helpful (17)

    • 5/5

      Installation Time: Full Day

      March 05, 2012

      great bang for your buck

      to the guy above me. sounds to me like your cams are not timed right and possibly during the install that your cam timeing chains have sliped off the sproket at the crank. theres now way that you should be going slower at the track after cams. you should have your cams timeing checked. check the timeing marks on the phaser and chain and make sure postion1 is at top dead center to see if all is where it should be. hope this helps you out and any one who want to do cams to there mustang. i have stage 2 cams in my mustang and they are awsome :) puting down 380rwhp with the stock heads

      stang631

      Year: 2007 Submodel: GT n.y

      Helpful (9)

    • 5/5

      Installation Time: Afternoon

      December 09, 2015

      Great set of cams

      These things make your car sound absolutely beautiful and run mean as can be. The first review on here sounds more like the guy had the bad driver mod. Given he only ran a 12.9 with about every bolt on and blamed a 13.7 pass on the cams. Anyway, don't listen to him. These cams will get you amazing performance with a good Dyno tune and CORRECT installation.

      duffman667

      Year: 2007 Submodel: GT Missouri

      Helpful (1)

    • 4/5

      Installation Time: Shop Install

      Installation Cost: $250-$500

      February 15, 2013

      Great High-End Power!!

      A small amount of low end loss. But overall great driveability and a nice high end kick of power!

      StangAhHolic87

      Year: 2008 Submodel: Bullitt

      Helpful (1)

    • 5/5

      July 24, 2011

      DONT WASTE YOUR MONEY!!!!!!

      I have all the supporting mods long tubes, Ford racing intake manifold, bbk 62mm tb, c&l racer cold air, tci 3000 stall, 410 gears, aluminum drive shaft, msd coil packs. All these part were bought from American muscle I will add. Before I added the cams I was running 12.9 at 110mpr on streets and rims. After the cams and slicks my best has been 13.7 at 104 mpr and yes thats after trying 2 new tunes from AM. So next week the cams are coming out and going back to American Muscle If they dont want to give me my money back they can just keep them.

      Bucky

      Year: 2007 Submodel: GT

      Helpful (11)

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