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Tag Archives: heads

Speed Secrets: Making Easy 350 SBC Power with Vortec Heads!

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Richard Holdener with Speed Secrets has paired up with Comp Cams to showcase some very wild builds over the years. A good portion of which required a fair amount of funding to accomplish, but a decent amount of horsepower gains doesn’t have to break the bank or leave your wallet empty. Starting off with a 350 cubic inch crate engine ... Read More »

Speed Secrets: L82 Small Block Chevy Heads/Cam/Intake Upgrades!

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When picking out cylinder heads to upgrade an engine, in general most people think in terms of flow. However there are many more considerations to be made about such a big decision that can make or “brake” a good engine build. To demonstrate the importance of choosing the right cylinder heads, Richard Holdener teamed up with Comp Cams and RHS ... 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 »

RHS Pro Elite LS7 heads offer HP gains with bolt-in simplicity

RHS offers its Pro Elite LS7 cylinder heads in 291cc and 307cc configurations to suit a wide range of street and race applications. They’re available fully CNC-ported or as raw castings. For older 3.900-inch-bore LS motors, RHS offers a 266cc small-bore variant as well. All Pro Elite LS7 heads are compatible with both stock and aftermarket intake manifolds.

Improving upon a set of mediocre OE cylinder heads is easy. Simply open up the bowls and back-cut the valves on a set of Gen I small-block Chevy heads, and — bam — an extra 20-30 horsepower is yours. Up the ante to a set of GM LS7 castings, however, and wringing out any additional airflow proves much more difficult. ... Read More »