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: Diagnosing Oil Pressure Drops in a Big Block Chevy

I have a big-block Chevy in a ‘69 El Camino that I just purchased. I really don’t know much about the engine other than it is a 454 with an […]

Q&A

Ask Away! with Jeff Smith: Upgrading 6L80/6L90 Transmissions for Boost

I have a 2015 Silverado with a 5.3L with long tube headers and I’ve installed a Whipple supercharger. My 6-speed trans is now slipping. Can you give me any direction […]

Q&A

Ask Away! with Jeff Smith: Calculating Valve Spring Clearance for Existing Cam

I bought a set of TFS valve springs (PN 16918-16) for my Summit 8702 cam for an LS engine and I realized these springs are only good up to a […]

Q&A

Ask Away! with Jeff Smith: Cost-Effective Ways to Increase Low-End Torque

I’ve been reading you for years at various magazines like PHR, Hot Rod, and Car Craft. I’ve been curious about the lower end of the torque curve. Looking at various […]

Tech / Tech Articles

Ask Away! with Jeff Smith: 4L60E vs. 200-R4 Transmissions

I think I just tore up my second 200-R4 transmission running back and forth to the NSRA street rod show in York, Pennsylvania.  I had a Turbo 400 in my […]

Q&A

Ask Away! with Jeff Smith: Tips for Maxxing MPG with Fuel Mixing

I have a 2012 F-250 Ford built to use flex fuel. What is the best way to maximize miles per gallon? Is there any advantage to running 1/2 tank of 93 […]

Q&A

Ask Away! with Jeff Smith: Cam Swap Tech for 5.3L LS/Vortec Engines

I’ve seen in a 4.8L LS engine story where you used a COMP short duration hydraulic roller cam and the engine made really good power. That cam, if I recall […]

Q&A

Ask Away! with Jeff Smith: Curing Engine Stumble in a Big Block Chevy 454

I just bought a big-block Chevy pickup from my neighbor who has had the truck for years. He’s been tinkering with it but has finally decided it’s smarter than he […]

Q&A

Ask Away! with Jeff Smith: How to Set Up an Advance Curve Without a Distributor Machine

I’m in the process of tuning up the HEI distributor in my 350 small-block Chevy. The engine has a mild cam. My understanding is that to re-curve my distributor it […]

Q&A

Ask Away! with Jeff Smith: What Those Nitrous Bottle Codes Mean & Why They Matter

What does this code on my nitrous bottle signify? — M.A. Jeff Smith: The stamp on your bottle represents the date it was certified—in your case December 2017. Each nitrous […]