Sealing A Problematic Turbo Small-Block With Cometic MLX Gaskets
This turbo 408 Windsor is making 900-plus horsepower and is finally staying sealed thanks to Cometic MLX head gaskets
View ArticleBack Cut Valves: Why Intake Valve Geometry Matters More Than You Think
Eric Weingartner just released Part One of a two-part test where he compared cylinder head flow of various intake valve back cuts.
View ArticleThe Cat’s Meow: ARP’s Cat Paw Washer Stops Overtorquing
Properly torquing your cylinder head fasteners is a critical step, which is why ARP designed the Cat Paw washer.
View ArticleCoyote Myths: Boss 302 Versus Gen 2 Cylinder Heads Compared & Tested
It's long been rumored on the internet that the Gen 2 Coyote head was a cast version of the factory-ported Boss 302 head. HeadGames Motorworks tore one of each down and threw them on the flow bench to...
View ArticleDyno Testing Cleveland Heads On A 347 Small-Block Ford Pt. 2
After getting our Windsor baseline, we installed the Cleveland heads on our 347 short-block. We spun up the Clevor hybrid on the engine dyno to see if Cleveland heads still reign supreme.
View ArticleDyno Tested: Cleveland Vs. Windsor Cylinder Heads On A 347 SBF, Pt.1
Cleveland heads have always had an advantage over Windsor heads from the factory. We find out, does that still hold true with today's aftermarket?
View ArticleDiving Into The Moser 350: The Five-Cam Small-Block Chevy Engine
Have you ever heard of the rare five-cam small-block Chevy engine? Learn how Pete Aardema and Kevin Brown recreated this 1971 Moser 350 masterpiece.
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 ArticleProject LA Thumper: Heads And Intake For Our 416 Small-Block Mopar
Our small-block Mopar is getting closer to actually "thumping". We seal the top end with Trick Flow Specialties' heads and intake.
View ArticleVideo: Developing A Cylinder Head — Step 1: Designing The Valves
When designing a brand new cylinder head porting program, the first step in the process is to figure out the valve configuration. Prestige Motorsports walks us through the process.
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 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 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 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 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 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 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 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 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 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.
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