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Featured Articles

COMP Cams® C5-R IWIS Single Race Timing Chain for GM LS Gen III/IV Applications

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Memphis, TN – COMP Cams® now offers a C5-R IWIS Race Timing Chain, the top of the line option for single chain LS applications. This high performance upgrade chain is a direct replacement for stock, single LS timing chains*. It features specially coated pins that resist wear and corrosion while increasing the integrity and strength of the chain – this ... Read More »

COMP Cams® Hustler™ Camshafts Expanded for GM CT525 LS-Based Crate Engines

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Memphis, TN – COMP Cams® is expanding the Hustler™ Camshaft Series for CT525 LS-based crate engine owners not afraid to push the limits of the rulebook for extra horsepower, torque and usable RPM range. The Hustler™ profiles are now available in two stages for the CT525 crate engine. The Stage 1 Hustler™ cam profile offers .004” more lift than the ... Read More »

Speed Secrets: 408 Fast Intake Test

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Single plane carbureted intakes are notorious for making big peak power, and the Fast LSXR intake is the best of the best when it comes to LS EFI applications, but how do the two compare? To find out, on an episode of Speed Secrets Richard Holdener and the guys from Fast stage an intake shoot out. For a test engine, ... Read More »

Speed Secrets: Is a Camshaft Swap Necessary for a Boosted Engine?

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The Xtreme Marine XM284HR camshaft with a .547 lift, 230/236 duration, and 112 LSA is an excellent camshaft for a ZZ-454 in a marine application, but how well would the cam do with boost? Richard Holdener with Speed Secrets teamed up with Comp Cams to put the combination to the test. This test was out of the norm in that ... Read More »

Speed Secrets: Zex Nitrous and Small Block Chevy Engines

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Whether from a turbo, blower, or nitrous, there is a lot to love about power adders. Especially when used in a Small Block designed specifically for them, like the SBC 383 Stroker from Blue Print Engines. It has everything you’d want for power adder applications, Including forged internals, low compression, and aluminum free flowing heads. Making the 383 that much ... Read More »

Speed Secrets: It’s Time to Juice the LS

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Typically, nitrous comes in two different configurations. For EFI applications there is the wet fogger system, where you combine nitrous and fuel in a single fogger nozzle and install it somewhere in the air intake system. Although, if you were looking for nitrous for a carbureted application, a perimeter plate type system would be the way to go. While both ... Read More »

Speed Secrets: Combining a Big Block Chevy with Nitrous Means Big Power

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As far as naturally aspirated power, it’s hard to beat a Stroker Big Block Chevy, especially one with a nice hearty camshaft from Comp Cams. The fun doesn’t have to stop there though. With a little throttle in a bottle, a healthy BBC can get real serious, real fast. To explore just how far a little nitrous can go when ... Read More »

Speed Secrets: Putting the Wrong Camshaft in an LS Engine

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GM made two different port style heads for the LS engine family, the cathedral port and the rec-port, and while everyone knows that LS engines respond very well to cam swaps, what happens when the “wrong camshaft” is used in an LS engine? To find out what would happen if you took a cathedral port cam and installed it in ... Read More »

Speed Secrets: Gen III 5.7-Liter Hemi Camshaft Swap

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Richard Holdener with Speed Secrets teamed up with Comp Cams to take a Gen III 5.7L Hemi and make it go from mild to wild with just a cam swap. For a test engine, the team snagged a 5.7L Hemi from a Ram truck and got to work. With a little machine work they changed the bore and stroke of ... Read More »

Speed Secrets: Small Block Chevy Stroker Engine Cam Swap

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Using a test engine from the previous Speed Secrets: Single Pattern Camshaft Test, Richard Holdener and Comp Cams run the 420ci Stroker SBC with a Turbo to see how two of those single plane cams handle some boost. To recap, the team ran a complete mild to wild single pattern camshaft test on the Stroker Small Block Chevy featuring an ... Read More »