Running 6.80s at nearly 210 miles-per-hour, today’s 275mm drag radial door-slammers incinerate the quarter-mile thanks to obscene levels of airflow and grip. Producing close to six horsepower per cubic-inch requires immense cylinder pressure that can split blocks, blow head gaskets and melt pistons in a jiffy. Fortunately, the aftermarket has methodically eliminated each of
In our Head Start series, we’re giving you the dos and don’ts of choosing aftermarket cylinder heads. Part One covered the don’ts — the most common mistakes people make when cylinder head shopping. Now we’re taking what we’ve learned from those mistakes and assembling some basic tips and guidelines to help you choose your cylinder heads wisely. Again, factors that play a
Compression equals horsepower. The reason is simple: The more you squeeze the air and fuel mixture in the combustion chamber, the more power you can create. In theory, forcing air and fuel in as small a combustion chamber as possible (measured in volume) will yield maximum engine compression and horsepower. There are a number of ways
How do I choose the right cylinder heads for my engine? It’s a simple question but the actual answer is more complicated than you’d think. There are many factors involved in choosing the optimum cylinder heads for a specific application, including: Engine displacement Type of vehicle Intended use Desired compression ratio Gear size Other performance modifications For
Edelbrock introduced cylinder heads and a supercharger for Jeep, reminding us that there is more to Jeep aftermarket than just suspension, wheels, and exterior accessory upgrades. Edelbrock’s Mike Kovacs paid a visit to Summit Racing’s headquarters in Ohio, and there, the Summit Racing video crew caught up with him to talk about these additions to the
From time to time, OnAllCylinders will provide a peek at some of the newest products and deals that can help get your next project on track for less. Check out what’s in our parts bin this week: Trick Flow PowerPort® 365 Cylinder Heads for Big Block Chevrolet Trick Flow’s PowerPort 365 aluminum cylinder heads offer a
From time to time, OnAllCylinders will provide a peek at some of the newest products and deals that can help get your next project on track for less. Check out what’s in our parts bin this week: Trick Flow GenX 260 Cylinder Heads for GM LS7 Combine a big bore (4.100 inch and up) engine
Got questions? We’ve got the answers—the Summit Racing tech department tackles your automotive-related conundrums. This week, we help a reader pick out the right cylinder heads for his small block Chevy engine. B.A. Smyrna, GA Q: I am thinking about getting a new set of of cylinder heads for the 400-cubic-inch small block in my
Got questions? We’ve got the answers—the Summit Racing tech department tackles your automotive-related conundrums. This week, we discuss the basics of compression and how it relates to your fuel octane. T.C. • Dayton, TX Q: I have a 1993 Chevy Silverado Z71 and according to the repair manual, my small block’s compression is 8.2:1. What
We recently reached out to the guys in Summit Racing’s renowned tech department—the largest full-time staff in the industry—to identify and answer five common tech questions they hear on a consistent basis. With help from Summit Racing’s tech advisors and other industry experts, we’ll answer those questions here at OnAllCylinders. Today’s topic: cylinder heads. Few
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