Articles written by: Jeff Smith

Jeff Smith has had a passion for cars since he began working at his grandfather's gas station at the age 10. After graduating from Iowa State University with a journalism degree in 1978, he combined his two passions: cars and writing. Smith began writing for Car Craft magazine in 1979 and became editor in 1984. In 1987, he assumed the role of editor for Hot Rod magazine before returning to his first love of writing technical stories. Since 2003, Jeff has held various positions at Car Craft (including editor), has written books on small block Chevy performance, and even cultivated an impressive collection of 1965 and 1966 Chevelles. Now he serves as a regular contributor to OnAllCylinders.

Q&A

Ask Away! with Jeff Smith: Getting an Aftermarket Tach to Work in an LS-Swapped 1969 Chevy Nova

I have completed a 5.3L LS truck engine swap into my ’69 Nova with a TH350 trans behind it for now. We decided to use the factory ECU and an […]

Q&A

Ask Away! with Jeff Smith: Picking a Cam & Cylinder Heads for a Mild Street Small Block Chevy

I am building a mild street engine and researching my existing heads for air flow. The casting number on my cylinder heads reads 10147898: It appears these are 1995 through 1998 350ci […]

Q&A

Ask Away! with Jeff Smith: The Best Flexplate for Mating a 1994 5.7L LT1 to a TH400

I have a 5.7 LT1 from a ‘94 Trans Am I want to mate it to a ‘79 TH400 transmission. What flexplate do I need? This has been a very […]

Q&A

Ask Away! with Jeff Smith: Solving a Shaking, Hiccupping 383 Small Block Chevy in a 1971 Camaro

I have a problem that hopefully you can help. We just finished dropping my brand new 383 small block Chevy into my ’71 Camaro. I had a professional shop build […]

Videos & Galleries

Video: Jeff Smith Shows How to Use a Summit Racing LS Engine Harmonic Balancer Installation & Puller Tool

If you’ve ever tried to remove the stock harmonic balancer on a GM LS engine, you know that a standard harmonic balancer removal tool isn’t going to work. Thanks to […]

Q&A

Ask Away! with Jeff Smith: Diagnosing a Chevy 454 That’s Getting Water in its Oil

I have a 454 big block Chevy that I purchased from a guy online. It looked good, we pulled the valve covers and it had a hydraulic roller cam and […]

Q&A

Ask Away! with Jeff Smith: Upgrading Fuel Injectors for Better Performance in an LT1-Equipped Chevy Camaro

What would be the best injector for my 1995 Camaro? The idea is to get higher performance. Would I have to change fuel pump also? Thanks. P.B. It’s a common […]

Q&A

Ask Away! with Jeff Smith: Proper Rocker Arm Torque & Tightening

I just discovered a rocker arm on my small block that loosened up and popped off the stud. It kinda mangled the threads on the stud, so I’m going to […]

Q&A

Ask Away! with Jeff Smith: Using E85 or Octane Boosters in a High-Compression 283 SBC with a Cruising-Speed Stumble

I am an old school pepper tree mechanic, and not quite in tune with 12:1 compression ratio small block Chevys. I have a 1962 Rambler Classic with a 283 with 12:1 […]

Q&A

Ask Away! with Jeff Smith: What Does “Inches of Mercury” Mean & How Does It Measure Vacuum?

Can you give me a short explanation of what inches of mercury is and how it is measures manifold vacuum? I just don’t understand it. Thanks! J.J. This can sometimes […]