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Product & Installation Articles

EZ-EFI Fuel System Still Simple, In Demand

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New technology often comes and goes, being replaced with the next latest and greatest advancement.  But, Fuel Air Spark Technology’s EZ-EFI Fuel system is an exception. More than eight years after its debut, it continues to be one of the best-selling carb-to-EFI conversion systems on the aftermarket. The system’s popularity stems primarily from its true plug-and-play design and self-tuning capabilities. A ... Read More »

COMP After Hours: Loophole Monte Carlo Gets Diablo Shifter

The Diablo shifter is ready to race! We now have an NHRA-legal reverse lockout and a more positive shifting position over our factory column shifter.

While building our “Loophole Monte Carlo” for an indexed class, we knew the column shifter had to go. Enter the new Diablo shifter from TCI Automotive. In an afternoon, it was completely installed and giving us better control for the track. The Monte Carlo’s destination is NHRA Stock Eliminator, specifically V/Stock. Cars in this class qualify with at least a 15.50 ... Read More »

Low-buck DIY: Valve Lapping

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We recently refreshed a set of 30,000-mile heads for our budget LT-1 rebuild. While we did splurge on new springs to match our cam, the valves cleaned up nicely and we decided to re-use them. Inspection revealed a little pitting on the sealing surface, and while they might have been just fine, we knew they could be a little better. ... Read More »

Top 10 Cam Failure Culprits

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Cams, cams, cams.. While camshafts can and do “go out,” something other than a bad core more often than not is to blame. Below are 10 things to think about before calling foul on your cam. COIL BIND Coil bind is when a spring compresses solid before or during full camshaft lift. This stack of metal stops the valve train ... Read More »

Low Buck DIY: LT1 Adjustable Cam Gear

We chucked up our trusty .350 bit and made our way through the metal, slotting the holes.

When upgrading our LT1 to an LS1-style ignition with the bolt-on kit from EFI Connection, we began installing our camshaft from COMP Cams with the factory cam gear. We found our Top Dead Center and then our Intake Lobe Centerline. To meet our desired 111 degree intake centerline, the cam core was ground at 115 degree lobe separation angle with ... Read More »

Finding the Intake Lobe Centerline

Step 3: Roll the cam backward until the gauge reads .50 lift before max lift and take a degree reading from the cam wheel.

Finding the Intake Lobe Centerline is essential to degree a camshaft, and it’s easy. See our Finding Top Dead Center article to learn how to set up the degree wheel. Read More »

Finding Top Dead Center

Step 4: Remove the piston stop and roll the engine back around until the pointer hits zero. This is your Top Dead Center.

Finding Top Dead Center on an engine is a four-step process made easy with a piston stop and a degree wheel.   Read More »

Low Buck DIY: LS Springs on LT1 Heads for More Lift

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Modifying heads to accommodate higher valve lift can seem like a daunting task. However, with a little knowledge and the right tools, it can be done by most people who know their way around a tool box. Our LT1 project includes a higher lift cam and a set of new COMP Cams conical valve springs designed for an LS. Our ... Read More »

New Life for an Old Deere

New life for an old Deere! David J. Kepner brings FAST EFI to old tractors.

  Custom FAST EFI offers modern performance for classic tractors By: Brandon Flannery Farmers have long been admired for their ingenuity. When 75-year-old David J. Kepner wanted his vintage John Deere tractor to run as well as his pickup, he wondered why he couldn’t use fuel injection. After devising a solution, the retired John Deere mechanic worked with the staff ... Read More »

Starting Over: RHS block foundation for Corvette LS7 Build

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When Chad Reese downshifted his 2006 Z06 and planted his foot to the floor, his intention was to show the guy in the Cadillac CTS-V his taillights. Instead, he found himself rolling to the side of the road in an embarrassing cloud of smoke. His engine wasn’t cooperating and had decided to grenade itself instead. Apparently, this is a bit ... Read More »