Comp Cams Mustang Stage II XFI VSR Camshafts 127300 (05-10 GT)

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

5 Reviews 13 Answers

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Item 30123
MPN# 127300

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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 (11) & Answers (13)

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:

Requires spring upgrade
Recommended with Comp Cam springs 26113-24
Custom dyno tune recommended
Solid power gains over 4600 rpm
Best with 3.90 gears and 3000 stall speed torque converter
Recommended with Comp Cam retainers 700-24

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

Installation Time: (approx) a Day

Difficulty Level:Mechanical expertise or professional installation required.

Installation Guides:

Manufacturer:
How to Install Comp Cams Camshafts on your 1996-2010 Mustang GT

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

Tech Guides:

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

Customer Photos

Questions & Answers (11)

5 Top Rated Questions

Why do you need a 3000 stall converter for?

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!!!!
these are valve spring replacement type cams and are for high performance not so much for a daily driver and will chug on slower acceleration..you may want to look at the nsr (no spring replacement) type cams...hope this helps

Helpful (1) Show 1 more answer

Do you know if these cams work good on a 4.10 gear and if so what kind of power can I expect

will this cam be alright with a roush 2300 supercharger

The Comp Cams Stage II XFI VSR Camshafts can be used safely with a Roush R2300 blower, however for ideal gains we would recommend looking at a blower cam, designed specifically for the characteristics of a supercharged engine.

Helpful (0)

I have an 07 standard shift gt what all would I have to have to run these

These Comp Cams Stage II XFI VSR Camshafts would require the Comp Cams Phaser Limiter Kit (item 30139), the Comp Cams Valve Springs Beehive (item 30106), and the Comp Cams Valve Spring Steel Retainers (item 30107). We would also recommend an upgraded ring and pinion with a 3.90:1 ratio of your favorite brand. https://www.americanmuscle.com/compcams-phaserlimit-kit-0510gt.html https://www.americanmuscle.com/mustang-comp-cams-springs-24.html https://www.americanmuscle.com/mustang-spring-retainer-3v.html

Helpful (0)

How much horsepower is gained from these?

These Comp Cams Stage II XFI VSR Camshafts are not rated as the power gains can vary from build to build, however, we have seen 30+ horsepower on some builds.

Helpful (0)

Not finding an answer? Ask your question! Post Your Question

6 More Questions

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. 1 answer

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.

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? 1 answer

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.

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? 1 answer

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

Helpful (0)

will a regular tune from my hand held tuner be enough for these bad boys? 1 answer

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

Helpful (0)

Custom Tune? If I have free tunes for life will AM be able to tune the cams with a e-mailed tune? 2 answers

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

Helpful (0) Show 1 more answer

96 gt? Will these work with my 96 gt? 2 answers

These say they are just for an 05-10 GT
No, it will not. The 96 GT has a 2 valve engine. These cams are made for the 05-10 GT 3 valve engine. Valve, referring to the number of exhaust valves per cylinder, which is what the camshaft opens and closes. There are camshafts for your engine which you'll find here: http://www.americanmuscle.com/mustang-camshafts-9498.html

Helpful (0) Show 1 more answer

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

no one in the world ever gets what they want, and that is beautiful

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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 (11) Thanks for your input!
- Performance Gain 5
  5
- Fit 5
  5
- Bang for your Buck 5
  5
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 (7) Thanks for your input!
- Performance Gain 5
  5
- Fit 4
  4
- Bang for your Buck 4
  4
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 (15) Thanks for your input!
- Performance Gain 5
  5
- Fit 5
  5
- Bang for your Buck 5
  5
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 (27) Thanks for your input!
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 (20) Thanks for your input!

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

Buy Together

$728.99

+$199.95

+$299.99

+$84.99