You did a tech answer around two years ago which was about adding a set of Vortec heads to a small-block Chevy. How much of a horsepower gain could you expect from porting these heads using the cam and everything? — R.B. Jeff Smith: We wrote about Vortec heads in 2016, and that article spawned
The Motor Trend show Engine Masters is all about finding out what makes horsepower and what doesn’t. Hosts David Freiburger and Steve Dulcich have tested everything from headers and carburetors to camshafts, superchargers, mufflers, and air cleaners. In Engine Masters Episode 28, they set out to learn whether cylinder heads with big intake runners really
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
Q: I have a Chevy 350 small block. The heads have been milled .020-inch; the block and Weiand Stealth intake were not cut. Will I need a thicker intake gasket to mate the Stealth to the heads properly? Will I need to mill the intake, and if so, by how much? The Stealth is like-new and
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
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