2020 Product Showcase: World’s CNC-Ported Merlin Big-Block Heads
World Products' Merlin cast-iron cylinder heads have been a staple in the aftermarket. Now they are getting even better with an advanced CNC machining program from HVH.
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 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 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 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 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 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 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.
View Article2020 Product Showcase: World’s CNC-Ported Merlin Big-Block Heads
World Products' Merlin cast-iron cylinder heads have been a staple in the aftermarket. Now they are getting even better with an advanced CNC machining program from HVH.
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 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 Article