Tech

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Mailbag: Troubleshooting and Tuning a Holley 1850 Carburetor

Q: I have a 355-cubic-inch small block Chevy. The carburetor is a Holley 1850, 600 cfm with manual choke and vacuum secondaries. My problem is, the secondaries won’t open at any speed or rpm. When I hit the accelerator, I actually get a bog and have to let up. I can accelerate the car fairly well

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Vac Visual: Quick Guide to Vacuum Gauge Readings

Intake manifold vacuum is a key indicator of engine performance. By measuring vacuum under different engine loads and conditions, you can track down problems within your engine and make the necessary adjustments or repairs. The key is having a reliable engine vacuum gauge and then knowing how to read it properly. We’ve said it before,

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Video: How to Install Billet Hood Hinges with Eddie Motorsports

If you’re planning on, or thinking about, replacing your vehicle’s stock hood hinges with aftermarket hinges, you’ve come to the right place. In today’s video, the crew at Eddie Motorsports — the industry’s largest maker of billet aluminum aftermarket hood hinges (currently 38 different models of cars and trucks) — is going to show you how to install

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Mailbag: How to Calculate Brake Pedal Ratio and Master Cylinder Size

Q: I’m putting together a disc brake system for a custom build. What can you tell me about setting up brake pedal ratio for optimum performance? Also, what can you tell me about master cylinders? Specifically, what do I need to know about the bore size of the master cylinder? A: On average, brake pedal ratio should range from

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Spark Plug Evolution: How Plasma is Being Used to Improve Spark Plug Performance

In junior high science class, you probably learned about the three states of matter: solids, liquids, and gases. Chances are you didn’t spend as much time talking about the lesser-known fourth state called plasma. Plasma, which is created by subjecting gas to a large amount of electrical energy, isn’t a new concept. However, plasma-assisted combustion is a

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Mailbag: How to Read the Timing Marks on Small Block Ford Balancers

Q: I’ve purchased a new harmonic balancer for the small block in my 1965 Mustang. There are three separate sets of degree marks on the balancer. Which should I use to set my ignition timing? A: Ford used three different Top Dead Center (TDC) locations on its small block engines. So, some harmonic balancers have three sets

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Video How-To: Installing a Ridetech StreetGrip Suspension System

The Ridetech StreetGrip suspension was one of the most talked-about new products at the SEMA Show in Las Vegas last November. You can find out what all the buzz was about by reading this article, but the Cliff’s Notes version of the story is the complete suspension package brings modern handling to classic muscle cars. Ridetech offers the StreetGrip suspension

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