“What I Learned Today” With Jeff Smith — Keeping Water And Oil Apart
Keeping water and oil separate is the job of the head gasket. However, the head gasket isn't the only component that keeps the two apart.
View ArticleSEMA 2021: Air Flow Research Debuts Its CNC Gen-III Hemi Head
AFR has released its entry into the Gen-III Hemi world with all-new, fully CNC-machined castings. The AFR cylinder heads will also be available as-cast, but still with big flow numbers.
View ArticlePRI 2021: Brodix Now Offers Direct Fit 5.3 LS Cylinder Heads
The LS engine continues to be one of the most popular mills around. Brodix's new 5.3 LS cylinder heads are a direct replacement for the OEM heads.
View ArticlePRI 2021: Chevrolet Performance Improves On COPO LS Heads
Chevrolet Performance continues to improve its products. We take a look at the redesigned COPO supercharger heads for the LS.
View ArticleProject Boring 4-Valve Pt. 2 — The Cylinder Head And Valvetrain
While a mild build, there are still quite a few gains to be unlocked in the top end of the Boring 4-Valve's DOHC engine. Custom cams and some nifty valvetrain components will help this engine sing.
View ArticleBig And Tall: Chevy’s RS-X / ZZ632 Big-Block Cylinder Heads Are Huge
When Chevrolet Performance released the ZZ632 big-block earlier this year, they included a new style of cylinder head. Built on Pro-Stock R&D efforts, the RS-X head has hints of LS development as...
View ArticleCNC Worship: Inside Lingenfelter’s Ported 243/799 Cathedral Heads
Lingenfelter's porting program along with a valvetrain upgrade, will make for the perfect high-RPM cylinder head package. Add in a pair of Performance Design carbon fiber valve covers, and we have a...
View ArticlePRI 2022: Turn Your 5.3 LS Into A Beast With Brodix’s BR 3 Heads
GM's 5.3-liter LS engine is capable of making big horsepower. Brodix's new 5.3 LS cylinder heads are great for any 5.3-based engine build.
View ArticleMaking Power: Project Number Cruncher’s SAM Tech-Built Top End
Project Number Cruncher's 427 cubic-inch LS engine, built by Sam Tech, is one stout mill. Join us for a tour of the engine's top end, valvetrain, fuel injectors, and the final dyno output.
View ArticleMaking Power: Project Number Cruncher’s SAM Tech-Built Top End
Project Number Cruncher's 427 cubic-inch LS engine, built by Sam Tech, is one stout mill. Join us for a tour of the engine's top end, valvetrain, fuel injectors, and the final dyno output.
View ArticleBoosted Coyote Pt. 3 – Livernois Race Series Top End Comes Together
The third installment of Boosted Coyote's engine build, we look at the Livernois Race Series top end and valvetrain. With the completion of this, the engine can head back home to get ready for the dyno.
View ArticleBoosted Coyote Pt. 3 – Livernois Race Series Top End Comes Together
The third installment of Boosted Coyote's engine build, we look at the Livernois Race Series top end and valvetrain. With the completion of this, the engine can head back home to get ready for the dyno.
View ArticleWhat’s Old Is New Again — Early Hemi Engines Deliver Big Power
While not as common or easily recognized as the 426 Hemi from the mid-'60s, the early Chrysler Hemi engines are still alive and kicking. The early Hemi engines were what originally put the Hemi on the...
View ArticleGet Into The Groove — Contain Combustion With O-Rings Or Fire Rings
When power-adders raise combustion pressures to extreme levels, engine builders look for a little help from O-rings or fire-rings. The little metal wires can make a significant difference in...
View ArticleBavarian Respiratory Therapy: Boosting The BMW S54 Cylinder Head
This BMW S54 inline-six-cylinder head gets prepared for boost before hitting the drift circuit. Some well-engineered and executed airflow improvements result in big horsepower gains.
View ArticleWhat’s Old Is New Again — Early Hemi Engines Deliver Big Power
While not as common or easily recognized as the 426 Hemi from the mid-'60s, the early Chrysler Hemi engines are still alive and kicking. The early Hemi engines were what originally put the Hemi on the...
View ArticleGet Into The Groove — Contain Combustion With O-Rings Or Fire Rings
When power-adders raise combustion pressures to extreme levels, engine builders look for a little help from O-rings or fire-rings. The little metal wires can make a significant difference in...
View ArticleBavarian Respiratory Therapy: Boosting The BMW S54 Cylinder Head
This BMW S54 inline-six-cylinder head gets prepared for boost before hitting the drift circuit. Some well-engineered and executed airflow improvements result in big horsepower gains.
View ArticleRaising The Roof: The New Kaase SR-71 Heads For 429-460 Fords
Jon Kaase managed to one-up himself with his new line of big-block Ford cylinder heads, dubbed the SR-71. Like their namesake, they are incredible performers flying high above the competition.
View ArticleSEMA 2019: LS, Small-, and Big-Block ‘Econoline Heads’ From AFR
During the 2019 SEMA Show held in Las Vegas, Air Flow Research (AFR) debuted its Econoline heads, a budget, entry-level cylinder head for the street guy with a big-block or small-block Chevy.
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