engine tech

Variable Valve Timing (VVT) is a system that automatically adjusts valve timing. GM used VVT on the following engines within the LS family. (Summit Racing’s Paul Spurlock and Brian Nutter contributed […]

Q: : I have a 1967 Pontiac GTO with a 400-cubic-inch engine that originally came from a 1968 Grand Prix. The 10.75:1 compression engine is rated at 340 horsepower. The […]

Anyone can slap a supercharger on a stock 505-horse LS7 and pick up an extra 200 horsepower. And thanks to the incredible untapped potential of GM’s factory LS7 cylinder heads, gaining huge […]

  Q: I own a 1966 Chevy Biscayne with a 468-cubic-inch big block Chevy engine. It has 12:1 compression, Crane 298-degree duration cam, oval port cylinder heads, 926 cfm Holley double pumper […]

If you’ve decided to go with a crate engine instead of the original engine or a used engine on your vehicle build, there are several choices you’ll need to make. […]

Detonation is a great thing if you’re taking in a fireworks show or maybe watching MacGyver. Inside your engine? Not so much. In fact, it’s probably best if you avoid detonation at […]

Got questions? We’ve got the answers—the Summit Racing tech department tackles your automotive-related conundrums. This week, we’re talking about engine flooding and hesitation.  T.M. Marietta, GA Q: I have a 1983 Chevy K-10 […]

Proper engine break-in procedure is critical. The right steps during this procedure can save your engine, your bank account, and ultimately your sanity. With help from the engine experts at ATK High Performance Engines […]

We can remember a time when a big block that pushed 500 cubic inches and 700 horsepower was just short of unbelievable. Heck, that’s small block territory nowadays. If you […]

In the first installment of Block Talk, we told you why a modern CNC-machined block is a great foundation for a high performance engine. Using a Chevrolet Performance big block Chevy […]