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Comp Cams Stage 5 Xtreme Energy XE278AH Camshafts (96-04 GT)

Item 30160
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$595.99 (pair)

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      Review & Installation Video

      These are the Comp Cams Stage 5 Xtreme Energy Camshafts for naturally-aspirated '96 to '04 GT Mustangs. These cams are gonna be ideal for those 4.6-liter owners out there that are looking to get the most horsepower out of their naturally-aspirated build. These cams work best when installed on a car that's already heavily modified. They need to be paired with items like an aftermarket high-flowing intake manifold, full exhaust, long tube headers, and they will require a tune. If you're planning a forced-induction or nitrous build, Comp Cams does make cams specifically for those builds. If your GT isn't heavily modified yet, Comp also makes cams that will be better suited for that build. And Comp does say that these specific cams require a 3.73 or steeper rear gear and specific valve springs, which will add to the overall price of these.These cams cost about $600, and the install will be a three out of three wrenches on the difficulty meter. Before we really get into these cams and talk more about them, I really have to get home the fact that these are Stage 5 cams, so you get power gains and, of course, that coveted rough idle. But these really are specifically for those highly-modified, naturally-aspirated cars. A lot of technical things come into play when you're looking at cams and specs. So if you add these without the correct supporting mods, you're gonna end up with a car that doesn't run right, that can be difficult to drive on the street, and that doesn't make the power that it should. With those details out of the way, we can take a closer look at the cams. When we start to look at powerband, Comp tells us that we can expect mid to high-range power and torque gains, and that these are ideal for both street and strip. The cams have an RPM range of 2,200 to 6,200, once again, for those naturally-aspirated builds. Due to the nature of these cams, Comp specifically calls out needing a 3.73 or steeper rear gear and a 2,400-plus stall converter if you have an auto car. Of course, custom tuning and valve springs will be required too. Speaking of needing valve springs, when you're shopping for a cam, you'll need to think about all of the cam specs. You want to consider specs like the lift and duration of the camshafts, since that'll tell you how your valves will be opening and closing. Comp tells us that the specs for these cams are as follows, a duration of 278 and 282, a valve lift of 0.55, lobe lift of 0.3, and lobe separation of 113 degrees. So you have a bigger lift than the stock cams, which is gonna allow for more air into the cylinders and more duration too, which ultimately means more power. And because you are changing so much with your lift and duration, Comp does say that you'll need to upgrade to their Beehive valve spring in order to support the added lift. And if you're thinking of not doing this, the only thing that I'll say is that you've already gone this far with your build. You're already doing the cams, and you already have your supporting mods, so why not do it right? It would really stink to do all of this work and then have issues with your valve springs down the road and, worst case, drop a valve and lose the engine. You also have to always consider piston-to-valve clearance when shopping for cams. So the correct valve springs and even a new set of retainers are always a good idea to upgrade. You also have to always consider piston-to-valve clearance when shopping for cams. So the correct valve springs and even a new set of retainers are always a good idea to upgrade. As far as numbers go, these are always gonna be hard to nail down. You have to consider the differences in builds, fuel, and tunes. These are things that'll create different power numbers for different people, so it's really hard to say. The other thing that comes into play here besides power gains is that wonderful sound. Everyone loves that big, lopey idle, and these cams certainly deliver that. Comp Cams calls out a rough idle as one of the big features here, so you won't be disappointed there. That's gonna wrap up this review. Keep in mind that you can check these out more online right here, at americanmuscle.com.

      Product Information

      Features, Description, Specs & Installation

      Features

      • Street and Strip
      • More Horsepower and Torque
      • Rough Idle
      • Custom Tuning Required
      • For 1996-2004 GT and Bullitt Mustangs

      Description

      Street and Strip. If you're looking to get even more power out of your SOHC 4.6L without stepping up to a forced induction set up, then consider a set of Comp Cams XE278AH Camshafts. They will give you great mid to high range power gains in both horsepower and torque making them ideal for street and strip.

      Rough Idle. If you love the sound of a rough 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 3.73 or steeper rear gears and a 2400 plus stall speed converter on automatic transmissions. Intake, exhaust, custom tuning and valve spring upgrades are required.

      Technical Note: Comp 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, see drop down option above. 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

      Comp Cams 102700

      CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

      Installation & What's in the Box

      Installation Info

      What's in the Box

      • (2) Camshafts

      Tech Specs

      Comp Cam Data Sheet
      Part Number: 102700 Grind Number: XE278AH
      Lifter Type: None - OHC Engine Type: FORD 4.6 and 5.4 SOHC MODULAR 2-V (1992-Present)
      RPM Range: 2200 to 6200 Valve Timing : 0.05
      Lobe-Center Angle 113 Intake Center Line: 109

        Intake Exhaust
      Valve Lash: Hyd. Hyd.
      Duration: 278 282
      Duration @ .050" Lift: 242 246
      Valve Lift: 0.55 0.55
      Lobe Lift: 0.3 0.3

      Valve Timing @ 0.05" Lift: Open Close
      Intake: 12 BTDC 50 ABDC
      Exhaust: 60 BBDC 6 ATDC
      5.0

      Customer Reviews (6)

        Reviews of Comp Cams Engine products have an average rating of 4.7 out of 5

          Questions & Answers

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