Machinists and engine builders have long been taught that, when balancing a crankshaft, its counterweights should equal the weight of the rotating mass, and equal half the weight of the reciprocating mass. Machinists have used this formula to calculate bobweight for decades. While this technique works extremely well for most street and race 90-degree V8 engines, the truth
Some folks are good with numbers. Some of us forget our own work phone extensions and occasionally blank on our PIN codes at the bank machine. For the latter group, OnAllCylinders contributor Lori Sams created this illustrated guide to engine firing orders. Firing order is important because it helps evenly distribute the power strokes along the
We’d venture to say nearly everybody has washed and waxed their own vehicle at some point. If you’re new to the hot rodding or car show scene, though, you may not be familiar with the benefits of clay as a detailing item. The clay bar is a time-honored detailing tool used by seasoned hot rodders to
Q: I’m changing the valve seals on my 1973 Camaro. The cylinder heads are on the engine, and the engine is in the car. I’m using compressed air to hold the valves closed. Also, the Camaro has an automatic transmission. How do I keep the engine from rotating? A: This can be done by using an engine-rotating tool and
By taking a non-descript 2013 Camaro SS and adding some budget-friendly performance and appearance products, Summit Racing is aiming to illustrate the hot rodding potential of the fifth-generation Camaro. We summed up the idea behind the build in the first installment of our Fifth-Gen. Frenzy series: With the introduction of the new generation Camaro and six model years of Gen
I recently bought an EZ-EFI throttle body fuel injection system from FAST for my ’70 Buick Skylark. I installed it according to the instructions and it started and ran pretty good for the first few days. I’ve noticed now that the engine runs very rich and it’s starting to load up the spark plugs. I’ve
After another long winter, there’s no doubt you’re ready to get out and race. But what about your race vehicle and equipment? Has your chassis received its required certifications, if needed? Does it need to be re-certified? Does your bellhousing, transmission shields, and other safety equipment meet the proper SFI specifications. To help make
[portfolio_slideshow id=51924] Anyone who has ever drag raced knows that weather and track conditions can pretty much change by the minute. We also know that days at the track can be long, so the weather and the track you started out with in the morning can turn into a completely different beast by midday and evening. We’ve
Q: I recently installed a shift light tachometer into my 1969 Chevy C10 2WD pickup with a 250-cubic-inch 6-cylinder engine. The engine has an HEI distributor. Even though I followed the installation instructions carefully, I can’t seem to figure out this nagging problem. When driving, the tach registers anywhere from 5,000-7,000 rpm while cruising, even
I just purchased a ’64 Chevelle that is very close to stock. It has a 350-cubic-inch small block and a Turbo 350 that I’m happy with, so I’m thinking of improving the handling but only if I can do that without making it ride like a dump truck. I’ve seen rear sway bars on many Chevelles
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