Engine & Exhaust

Q: The culprit is a 1989 GMC 1500 4×4 with a 350, automatic with overdrive, a 3.42 axle, and over 150,000 miles. It has recently developed a powerful thirst for […]

This may sound like a simple question, but what is cylinder wall glazing and how is it created? I hear about it all the time when people talk about piston […]

Q: I have a third-gen Chevy Camaro RS. I’d like to build a 350 for it that puts 400 horses on the ground, and I’d like for it to be […]

Q: I’m getting ready to build a 406 small-block to put into my Camaro. My question is about the use of block filler. I’ve read that if you fill the […]

I’m asking this for a friend and I know you will have suggestions. He’s building a vintage El Camino and has decided on an LS swap. He wants 650-700 hp […]

Any builder familiar with late model engines knows that an engine’s computer control system monitors both camshaft and crankshaft position in order to achieve correct spark and fuel delivery. Many […]

Q: I’m finishing a build on a 1967 Ford Galaxie convertible. Here’s what I’ve got so far: a 1971 351W, bored .030 over, flat top pistons, stock 69cc heads and […]

Q: I have a Chevy Caprice with a 350 4-bolt main, a 292 Lunati cam with .480” of lift, and a high-rise intake with a 750 Holley carb. My heads […]

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 […]

Though the dozens of engines in the GM LS and LT families have many similarities, there are significant differences as well—and it’s important to know exactly what those are if […]