Layered on top of that is the multitude of variations on stock displacement, port configuration, valvetrain type, and other evolutionary changes that have occurred over the years. It’s a jungle out there, and even though the LS is the go-to powerplant for those on a budget, there’s a lot of stuff to know before considering a build.
Here, we will dyno test three new LS cylinder heads and perform a camshaft swap on a naturally aspirated Gen III 6.0L LY6 truck engine. We’ll be using new stock-replacement cylinder heads sourced from EngineQuest (EQ), a wholesaler that has supplied cores and parts to the rebuilder industry for nearly 30 years.
Why Use Stock Cylinder Heads?
With so many aftermarket versions available, you may wonder why we’re focusing on stock replacement cylinder heads. Basically, brand new versions of stock heads are getting difficult to find. More and more, your options are refurbished heads, and hopefully, the rebuilder is a good one. As a supplier of parts for rebuilders in the stock replacement market, EQ is often the first to experience tight supply chains for factory-style parts, even before performance builders.
This story is from the November 2020 edition of Hot Rod.
Start your 7-day Magzter GOLD free trial to access thousands of curated premium stories, and 8,500+ magazines and newspapers.
Already a subscriber ? Sign In
This story is from the November 2020 edition of Hot Rod.
Start your 7-day Magzter GOLD free trial to access thousands of curated premium stories, and 8,500+ magazines and newspapers.
Already a subscriber? Sign In
Making Connections
Project T-top Coupe: We install a Terminator X Max for big power.
LET IT BREATHE!
Project X’s new ZZ632 big-block needed to breathe, and this do-ityourself stainless exhaust kit was just the ticket to make it happen.
TUNING OPTIMIZED
VARIABLES WITHIN FUEL-INJECTOR CONSTRUCTION CAN LEAD TO POOR ENGINE OPERATION. HERE'S HOW TO TUNE YOUR FUEL INJECTORS.
Re-Flange It!
We check out the fab skills needed to run a flat hood on a 1970 Mustang with a very unique and too-tall engine.
THE TRIBUTE FOR THE WIN
Ron Capps wins the NHRA U.S. Nationals driving a Don Prudhomme-Hot Wheels tribute Funny Car.
So Close
Following a nearly flawless performance, a pít lane penalty kept the C8.R off the top of the podium in the IMSA Sportscar Weekend.
A RADICAL SHIFT
When you're a teenager and the police know you by name, it's not usually because of your volunteer work or class-topping GPA. Not at all. That was especially true for Jeff Kainz when he was behind the wheel of his 1975 Camaro. In the '80s, while cruising his hometown in North Dakota, his buddies with police scanners often heard the police tell one another: \"Kainz is out on Main Street.\"
WILD MASH-UP
Built to long-haul the 2023 HOT ROD Power Tour, this 1984 Monte Carlo’s facade hides a performance secret!
6 TIMER!
Tom Bailey captures his 6th HOT ROD Drag Week Unlimited/Overall title with his Sick Seconds 1.0 Camaro.
JIM MCFARLAND'S INFLUENCE WENT WAY BEYOND HOT ROD MAGAZINE.
Jim McFarland, the multitalented, multifaceted Texan who enjoyed several careers in the automotive performance industry, passed away in October 2023 at the age of 88.