Q&A

Monday Mailbag: Unleashing a (Mostly) Stock Pontiac 400
Q&A / Tech / Tech Articles

Monday Mailbag: Unleashing a (Mostly) Stock Pontiac 400

You’ve got questions. We’ve got the answers—Mondays when the Summit Racing tech department tackles your automotive-related conundrums.  M.J. Cadott, WI Q: I own a 1967 Pontiac Firebird coupe with a mostly stock 1971 400 […]

This is a close-up of a couple of spark plugs that indicated trouble in the cylinder. You can clearly see those black specs on the center electrodes, but perhaps what is more troubling is the fact that the ground electrodes are melted. The fix for this engine was less timing (which reduces heat in the chamber), a non-projected nose spark plug, and a higher octane fuel.
Q&A / Tech / Tech Articles

Ask Away with Jeff Smith: What’s the Difference Between Detonation and Pre-Ignition?

Okay, I keep reading about there is a difference between detonation and pre-ignition but it seems that whenever I ask anybody about this, they agree but don’t know the difference. […]

Monday Mailbag: Solutions for Poor Brake Performance and Excessive Fade
Q&A / Tech

Monday Mailbag: Solutions for Poor Brake Performance and Excessive Fade

You’ve got questions. We’ve got the answers—Mondays when the Summit Racing tech department tackles your automotive-related conundrums.  J.B. Harrison, AR Q: My 1953 Chevy 1/2 ton truck project has hit a snag. I […]

Monday Mailbag: How to Improve Highway Mileage in a Vintage Hot Rod
Q&A / Tech

Monday Mailbag: How to Improve Highway Mileage in a Vintage Hot Rod

You’ve got questions. We’ve got the answers—Mondays when the Summit Racing tech department tackles your automotive-related conundrums.  D.L. Kansas City, KS Q: My trusty 1936 Plymouth 4-door has a .060-inch over, 350 […]

Ask Away with Jeff Smith: Inside GM’s New 90-Degree V6 Engine
Q&A / Tech / Tech Articles

Ask Away with Jeff Smith: Inside GM’s New 90-Degree V6 Engine

In the ‘80s, GM used a 4.3L 90-degree V6 in many different cars. I know that this engine is basically a small-block Chevy with two cylinders removed. This got me […]

Ask Away with Jeff Smith: Fuel Volume vs. Fuel Pressure & How They Relate
Q&A / Tech / Tech Articles

Ask Away with Jeff Smith: Fuel Volume vs. Fuel Pressure & How They Relate

I’m considering buying one of those self-learning TBI fuel injection systems. I’ve heard that the fuel delivery system is the most important part of the installation so I’ve been reading […]

Video: Exhaust X-Pipes vs. H-Pipes, Part 2
Q&A / Tech / Videos & Galleries

Video: Exhaust X-Pipes vs. H-Pipes, Part 2

If you missed it, Part 1 of the X-pipes vs. H-pipes Summit Racing Quick Flicks video series focused on the basic differences between the two designs and how to choose […]

Monday Mailbag: Diagnosing Mopar Ignition Problems
Q&A / Tech

Monday Mailbag: Diagnosing Mopar Ignition Problems

You’ve got questions. We’ve got the answers—Mondays when the Summit Racing tech department tackles your automotive-related conundrums. This week, we’re tracking down some ignition box issues in a 1974 Plymouth Duster. […]

Monday Mailbag: How to Read Your Vehicle’s Smoke Signals
Q&A / Tech

Monday Mailbag: How to Read Your Vehicle’s Smoke Signals

You’ve got questions. We’ve got the answers—Mondays when the Summit Racing tech department tackles your automotive-related conundrums. This week, we’re looking at what the smoke color coming from your vehicle might […]

Ask Away with Jeff Smith: A Basic Guide to Ignition Advance
Q&A / Tech

Ask Away with Jeff Smith: A Basic Guide to Ignition Advance

I hate to admit that I’ve been working on cars for more years that I care to admit and yet I still don’t understand all the different things about ignition […]

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