Video: On The Dyno With Edelbrock’s Gen-III Hemi Cylinder Heads
The Gen-III Hemi is an impressive powerplant, but even the mighty Hemi can benefit from a set of aftermarket cylinder heads. Prestige Motorsports dyno tests Edelbrock's RPM Hemi heads to see what they...
View ArticleTech Time: 10 Tips For Buying Cylinder Heads
Selecting the right set of cylinder heads goes beyond just bolting on a pair that fits. We cover 10 tips you need to know when buying heads.
View ArticleQuick Tech: Clay Intake Radius On A Flow Bench; What’s It Worth?
When testing a cylinder head on a flowbench, sharp edges and blunt transitions can cause turbulence. Smoothing those out for more real-world conditions is a critical part of proper testing.
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 Article24 Year-Old Facelift: Refreshing GT40 Cylinder Heads With Engine Pro
With some parts from Engine Pro and a little elbow grease, we take these old small-block Ford heads and give them a new lease on life. You can do the same at home with just a little effort.
View ArticleWhy Cylinder Head Low And Mid-Lift Flow Numbers Are Important
Low and mid-lift flow numbers are what help a set of heads make power. We look at what these numbers mean and why they're so important.
View ArticleImproving The Best: Testing MPR-Built Gen-3 Coyote Cylinder Heads
The Gen-3 Coyote cylinder head is one of the best OEM cylinder heads to ever come out of the Blue Oval. MPR makes them even better with CNC port work and a host of aftermarket parts.
View Article“What I Learned Today” With Jeff Smith — Blind Bolt Hole Blunders
When moving to a block with blind bolt holes after using ones where the fasteners extend into the water jackets, there are some new things to consider.
View Article“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 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 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 ArticleCC’ing Heads — How To Measure Your Combustion Chamber Volume
Measuring your cylinder head's combustion chamber volume is a critical step to ensure that you have your desired compression ratio. The process is straightforward and the tools are easy to use.
View ArticleSEMA 2023: Edelbrock Victor Full-Race Gen-III HEMI Cylinder Head
Edelbrock's Victor Gen-III HEMI cylinder head brings a whole host of improvements to the full-race design. By correcting some factory design flaws, and improving everything else, these heads will make...
View ArticleSEMA 2023: Edelbrock’s New GEN III HEMI Cylinder Heads
The GEN III HEMI now has another option for cylinder heads. Edelbrock has added the HEMI to is Performer RPM and Victor line of heads.
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.
View ArticleSEMA 2019: Chevrolet Performance’s New LSX-SC Cylinder Heads
If you plan on running big boost, you need a cylinder head that can handle the pressure. Chevrolet Performance's LSX-SC head is up to the challenge.
View ArticleBudget Friendly Power: The LS1 Enforcer Cylinder Heads From AFR
AFR's new Enforcer cylinder head for the LS1 engine packs plenty of power for a small price. The Enforcer provides plenty of flow for NA applications looking for more power.
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