Tech Articles

You’d think selecting a rear end for a project car would be easy. It’s not. Browse Summit Racing’s website or catalog and you’ll discover there are almost too many choices. […]

I just bought a used 5.3L LS engine out of the junkyard and after we got the engine back to the shop and mounted it on an engine stand, we […]

I’ve been looking online for help to figure out what is happening to my car and I thought your expertise may help. I have a supercharged Foxbody Mustang GT with […]

It’s no secret that aftermarket electronic fuel injection (EFI) systems are becoming more and more commonplace. It should come as no surprise however, that some of the early systems were […]

Editor’s Note: This is the second half of an article on how to interpret cam specs to select the right cam for your engine and vehicle needs. You can read the […]

Have you ever wondered why one camshaft makes more power than the other? Would you like to compare the behaviors of multiple cams without ever doing a cam swap? Written […]

When a camshaft is “degreed” it means the camshaft position in the engine has been synchronized with the crankshaft position. Degreeing the cam is the only positive means to determine […]

Hi, I was wondering if you could help answer a few questions and doubts I have about moving forward with my E85 build. I know there’s a lot of hype […]

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 […]

How do I tell the correct heat range spark plug for an engine? – Mark S. Jeff Smith: Simple questions sometimes require a bit longer answers. This is one of those […]