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Ford Mustang Comp Cams - Three-Valve Thump - Tech

Three Valve Comp Cams Fig1
Castaldo's ponycar features... 
   
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Three Valve Comp Cams Fig1
Castaldo's ponycar features the usual assortment of bolt-on components, and the engine runs through the factory five-speed transmission. In this trim, the Mustang produced 333 rwhp and 350 rwtq.
Three Valve Comp Cams Remove
With locks and retainers removed,... 
   
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Three Valve Comp Cams Remove
With locks and retainers removed, the stock valvespring comes off and the new Comp valvespring and retainer combo goes on. We found the intake valvesprings were somewhat easy to install, for an experienced mechanic. The exhaust springs were time-consuming, to say the least. This job is not for the shade-tree mechanic. Our suggestion-let an experienced shop handle the job. It may cost a little, but it will be cash well spent. Remember, this process is repeated 23 more times.
Three Valve Comp Cams Lube
Dab a bit of assembly lube... 
   
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Three Valve Comp Cams Lube
Dab a bit of assembly lube on the top of the valve stems and cam follower cups before installing the cam followers.
Three Valve Comp Cams Coil Packs
This engine was equipped with... 
   
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Three Valve Comp Cams Coil Packs
This engine was equipped with Granatelli Motor Sports coil packs. There are mixed reviews circulating the Internet about these pieces, and our opinion is that it doesn't hurt to have them-especially in a high-horsepower and/or boosted application. They boast a 60,000-volt delivery and zero-ohm resistance.
Three Valve Comp Cams Swap
All 12 valvesprings on the... 
   
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Three Valve Comp Cams Swap
All 12 valvesprings on the right side of the engine were swapped and the camshaft bolted on. Adding luster under the hood, we dropped on a set of JPC chrome valve covers. It took only a few minutes to reattach the wiring harness to the coil packs and fuel injectors.
Three Valve Comp Cams Fig2
The new camshafts and optimized... 
   
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Three Valve Comp Cams Fig2
The new camshafts and optimized tuning helped this Mustang spin the chassis dyno rollers to peak numbers of 368 rwhp and 368 rwtq.
Three Valve Comp Cams Fig3
We wanted to show a comparison... 
   
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Three Valve Comp Cams Fig3
We wanted to show a comparison of the two graphs to give you an idea of how much better the Comp camshafts performed, not just the peak results.
Three Valve Comp Cams Engine
JPC ace tech, Adam Humm, started... 
   
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Three Valve Comp Cams Engine
JPC ace tech, Adam Humm, started with the right-side camshaft and valvesprings. Once that was completed, work began on the left side of the engine. The same process was used, and Humm worked quickly through this side of the engine. The second side took a little less time, bringing the complete job to around a day's worth of work-without dyno time.
Three Valve Comp Cams Predator
Burcham used a DiabloSport... 
   
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Three Valve Comp Cams Predator
Burcham used a DiabloSport Predator to load up the tune he wrote for this combination. It took a few dyno pulls to optimize the tune-up, and Burcham adjusted mostly camshaft timing to get the engine to pull nicely through the lower-rpm range and still have a sparkling top-end charge, as the engine marches up to 6,200 rpm with ease.
Comp Cams JPC Racing
866-JPC-RACE

www.jpcracing.com

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