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Comp Cams Stage 4 Xtreme Energy XE274HR Camshaft (86-95 5.0L)

Market Price $307.99 You Save 12% ($36.00)
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$271.99 (each)

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  • Item 30148

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    Features & Details

    • Upgrade Over Stock
    • Increased Street Performance
    • Noticeable Idle
    • Hydraulic Roller Lifter
    • For 1986-1995 Mass Air Equipped 5.0L Mustangs
    Street Performance. This Comp Cams Xtreme Energy cam is an excellent upgrade from stock for improved street performance. With increased responsiveness and a step up duration, a greater performance can be felt from a Xtreme Energy Camshaft.

    Noticeable Idle. Give your 5.0 Pony a nice noticeable idle that is louder than stock, but is not overbearing or obnoxious.

    Application. This Comp Cams XE274HR Camshaft is designed for use in Mass Air equipped 1986-1995 5.0L V8 Mustangs with modifications such as better flowing heads, Intake, Fuel System upgrades and steeper 3.55 to 3.73 rear gears for peak performance. Compatible with O.B.D.4.Technical Note. This cam requires a minimum of a 3.55 rear-end gear, automatic transmissions require at least a 2500 RPM stall converter.

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

    MPN# 35-518-8

    CA Residents: WARNING: Cancer and Reproductive Harm -

    What's in the Box
    • (1) Camshaft
    Installation Info
    Tech Specs
    Comp Cam Data Sheet
    Part Number: 35-518-8 Grind Number: XE274HR
    Lifter Type: Hydraulic Roller Lifter Engine Type: FORD 5.0 (1982-2001)
    RPM Range: 2200 to 6200 Valve Timing : 0.006
    Lobe-Center Angle 112 Intake Center Line: 108

    Intake Exhaust
    Valve Lash: Hyd. Hyd.
    Duration: 274 282
    Duration @ .050" Lift: 224 232
    Valve Lift: 0.555 0.565
    Lobe Lift: 0.348 0.354

    Valve Timing @ 0.006" Lift: Open Close
    Intake: 29 BTDC 65 ABDC
    Exhaust: 77 BBDC 25 ATDC
    Will it fit my Mustang?

      Customer Photos

        Questions & Answers (9)

        5 Top Rated Questions

        will this work with ported GT40X heads, 347 stroker, trickflow upper and lower intake, and 24lbs injectors?

        • These will work with your setup but you will need to check your piston to valve clearance with these.

        Helpful (0)

        what intake(s) are suggested with this cam with Windsor SR heads and a paxton Novi 1000 ?

        will this cam work with GT40X heads, Eldebrock performer RPM intake, 408 stroker, fitech EFI carb, torque storm supercharger

        • While the Comp Cams Stage 4 Xtreme Energy XE274HR Camshaft will work with the setup you described, it is designed for an RPM range that is higher than your intake will support. We would recommend the Stage 3 version of this cam for your setup.

        Helpful (0)

        I have a 88 GT, mass air, 70 mm tb, 30lb injectors, sve intake, sve heads, 347, BBk long tubes. Will this cam match my components with the right springs a tune? Mostly worried the intake won't be good for the higher rpm'

        • The Comp Cams Stage 4 Xtreme Energy XE274HR Camshaft will work well with your setup, though we strongly recommend checking piston to valve clearance. A tune would be required to maintain the speed density setup with this cam. For a more dedicated street car, a stage 3 cam may be a better option, but for a street/strip car this would work well.

        Helpful (0)

        Any suggestions for base idle setpoint with this cam in a 5.0? I have a 4bank chip on the way.

        • We recommend the stock idle RPM range for the Comp Cams Stage 4 Xtreme Energy XE274HR Camshaft.

        Helpful (0)
        Post Your Question
        4 More Questions
        what is all included with this purchase? also, can i swap this with the stock cam with out upgrading any engine parts? 1 answer
        Will this camshaft work with stock heads with no head/valvetrain work? Also, will it work with stock pistons (valve piston clearance)? 1 answer
        Can I use this for carbureted set up 1 answer
        Can Bama tune the 4 bank eliminator chip for this cam? 1 answer

          Customer Reviews (4) Write a Review

          Overall Rating 5

          out of 5 stars

          Installation Time:Full Day

          Installation Cost:$500-$1000

          • Performance Gain 5 5
          • Fit 5 5

          • 5/5

            Installation Time: Shop Install

            Installation Cost: $500-$1000

            November 22, 2017


            Cams will go on with edelbrock heads and a 347 stroker kit with a 50 shot of now. Look forward to hearing them bald eagles and all that chompin.


            Year: 1994 Submodel: GT

            Helpful (14)

          • 5/5

            Installation Time: Less than 1 Hour

            November 02, 2017

            Installed last weekend

            Installed this last week. there was some very minor rust on one of the lobes but it was wiped off with gloves on my hand with ultra slick engine assembly lube. Cam works great and is running great in the new engine. Install was very easy because the block was already outside of the car.


            Year: 1990 Submodel: GT

            Helpful (13)

          • 5/5

            Installation Time: Afternoon

            October 05, 2015

            Very nice camshaft!

            Fantastic idle, not too lumpy or unstable. Sounds excellent. I have a 331 stroker motor with AFR 185cc heads, and 30lbl injectors. It will need a good tune to make it nice. Backing up is of course harder than normal, but not bad. Idle is stable, but it likes to be at 900-1,000 rpms. Take offs are good, not that much different from a stock motor/heads/camshaft. Listen to the fact that it needs at least 3.55 gears. I currently have the 3.08's (will change soon). It will take off with more power than you had, but it's not a huge difference HOWEVER, once you get above 3,000 rpms, that's when it wakes up like an adrenaline shot to the heart. Best use for the weekend warrior, perhaps a little too radical for a daily driver.


            Year: 1993 Submodel: GT Holiday, FL

            Helpful (20)

          • 5/5

            Installation Time: Weekend

            October 16, 2012

            Excellent. more power out of my 347 with a mild idle.

            Excellent. more power out of my 347 with a mild idle. 347 stroker trick flow twisted wedge heads. put this cam .good idle. not too lumpy.


            Year: 1990 Submodel: Other new york

            Helpful (11)

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