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Product & Installation Articles

Ford 306 Cam Swap

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Words And Photos: Richard Holdener Nostalgia is a funny thing. Case in point, the original muscle cars. Naturally, we fondly remember the hot muscle motors of the original muscle car era, but truth be told, are these memories tainted or otherwise artificially enhanced by nostalgia? As powerful as the original Mustang, Camaro, and Challenger motors were, the new ones are even ... Read More »

FAST vs Dorman Intake Test

Equipped with the FAST LSXRT intake and Big Mouth throttle body, the 5.3L produced 479.2 HP at 6,800 RPM and 421.6 lb-ft of torque at 4,900 RPM.

Words and Photos: Richard Holdener The internet is great for a number of things, not the least of which is spreading rumors. The information superhighway is certainly king when it comes to getting info out to a vast audience, but therein lies the problem. As efficient as it is at getting info to millions of people almost instantly, it is somewhat ... Read More »

ZEX to the Max

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Words and Photos By: Richard Holdener Generally speaking, when we run nitrous testing, we take a good motor and add 100-150 HP using a plate or single fogger nozzle. Nitrous oxide is an impressive power adder, offering an unmatched combination of power and pricing. Nothing you buy can increases the power output of your motor (any motor) by 100, 150, ... Read More »

Fast Under Boost: LS Intake Test Part 2

Run with the FAST, the normally aspirated 5.3L also produced 486 HP, but at 6,800 RPM. Torque production was up with the FAST intake, to a peak of 425 lb-ft at 5,000 RPM.

Words & Photos By: Richard Holdener Back in Part 1, we compared a couple of popular intake manifolds on a normally aspirated 5.3L. The FAST LSXR and LSXRT have long been the go-to intake of choice for performance LS applications, but with so many new intakes available, we wanted to see if the FAST design was still a player. More ... Read More »

Fast as Ever: LS Intake Test Part 1

With so many intakes now available for LS applications, is a FAST intake still the hot set up?

Words & Photos By: Richard Holdener For some time now, the LS engine family has been the proverbial hot button of the automotive industry. The LS took the reins from the original small-block Chevy and has never looked back. Even after the introduction of the direct-injected, Gen V LT engine, the LS remained the engine of choice among Chevy enthusiasts, ... Read More »

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 »