Dyno Test: Adding 120 HP with Cam Swap in Turbo LS 5.3L
LS engines respond well to cam swaps. It’s probably the #1 upgrade for any LS, because the gains can be dramatic. The reason is that the LS engine family, from […]
Ask Away! with Jeff Smith: A Brief History of the Airflow-Restricting Chevy 305
How did Chevrolet build the 305 cubic inch small-block? Is it a mash-up of 283 and 350 parts? Or is it just slightly larger than a 302 Chevy engine? — […]
Ask Away: Explaining Mysterious Rod Bearing Failure
Could I get your opinion on an engine problem? I spun a rod bearing in my supercharged big-block Chevy. The engine makes big power and has run my ’55 Chevy […]
Mailbag: Do I Need a High-Volume or High-Pressure Oil Pump?
Q: Do I need a high-volume or high-pressure oil pump? … A: When buying an oil pump, you have a few options. The right pump for you depends on how […]
Truck Cam Swap Testing to Add Low-End Torque
The LS engine remains the darling of the performance world, but does that mean all LS owners are looking for the same thing when it comes time for upgrades? Obviously […]
Mailbag: 409 Stainless Steel vs. 304 Exhaust Materials
Q: What is the difference between 304 and 409 stainless steel? … A: All stainless steel contains chromium and other elements. The added elements make the metal harder, stronger, and […]
Mailbag: The Difference Between Flat Tappet and Roller Camshafts
Q: What is the difference between a flat tappet and a roller camshaft? … A: Camshafts are classified by the type of lifter they use. The lobes on the cam […]
Mailbag: Key Differences Between Internal & External Engine Balance
Q: What’s the difference between internal and external engine balance? … A: An engine must be balanced to ensure smooth operation. Balancing an engine minimizes vibration which maximizes engine life. […]
Mailbag: What is Valve Spring Coil Bind?
Q: What is valve spring coil bind? … A: Coil bind happens when the valve spring is fully compressed. The coils of the spring contact each other. This stops the […]
Mailbag: Explaining Valve Overlap for Camshafts
Q: What is valve overlap? … A: Overlap is when the intake and exhaust valves are open at the same time. It is expressed in degrees of crankshaft rotation. Not […]