Q&A

frame vs unibody - image by autoexpertus
Q&A

Mailbag: Unibody vs. Body-on-Frame Chassis

Q: Which is better between a body-on-frame and unibody chassis design? … A: Most vehicles are built using either “body-on-frame” or “unibody” design. The terms refer to the style of […]

Q&A

Mailbag: Explaining Automotive Electric Relays

Q: What are the different types of electric relays? … A: An electric relay is a high amperage switch controlled with a small electrical input. Normally, the small input controls an electromagnetic […]

Q&A / Tech Articles

Ask Away! with Jeff Smith: Choosing a Transmission for Big Block-Powered Cruiser

I am building a ‘72 Caprice as a tribute patrol cruiser. I am pulling out the original 400 SBC and replacing it with a big-block 454 just so the look […]

Q&A

Mailbag: Explaining Thrust Angle for Both Street & Race Vehicles

Q: What exactly is the “thrust angle” on a vehicle, and why does it matter? … A: The thrust angle is an imaginary line that is precisely 90 degrees from […]

Q&A

Mailbag: Determining Tire Age by Serial Number

Q: How old are my tires? … A: The serial number of a tire is the most effective way to determine its age. The serial number may also be referred […]

Q&A

Mailbag: Tall Valve Covers vs. Stock Valve Covers

Q: Do I need tall valve covers? … A: Valve covers come in a variety of designs to give your engine the look you want. One important thing you will need […]

Q&A

Ask Away! with Jeff Smith: Adjusting Vacuum, Timing & Advance Springs to Cure Engine Misfire

I’ve been reading your posts/blogs/articles on tuning with a vacuum advance and it’s been very helpful. My combo is a 355 small-block Chevy, 10.7:1 compression, 23-degree Brodix 10x heads that […]

Q&A

Mailbag: What Do I Need to Run E85 Fuel?

Q: I want to run E85 in my car. What should I know before changing fuels? … A: Many of us have seen the cars making huge power on E85 […]

Q&A

Mailbag: Upgrade Advice for Adding Larger Throttle Body to Late Model Challenger

Q: I’d like to install a larger throttle body on my 2010 Dodge Challenger R/T with an automatic transmission. The car currently has a Summit Racing exhaust system and a […]

Q&A

Mailbag: Headlight Replacement Tips for Better Night-Driving Visibility

Q: I have a 1978 Ford F-250 that I have owned for 30 years. My vision isn’t what it used to be and lately I’ve found myself struggling to see […]