Ask Away! with Jeff Smith: Here’s Why More Engine Boost Doesn’t Always Mean More Power
I was watching a dyno test video the other day with a couple of cam swaps on a supercharged LS3. On the first test, a slightly bigger cam showed more […]
Ask Away! with Jeff Smith: Exploring Parasitic Power Loss in an Autocross Car
I have a small-block, four-speed early 1970s Camaro that I race in autocross. How much horsepower do the following items use on a small-block at 6,000 rpm? Even a guesstimate […]
Ask Away! with Jeff Smith: Using Master Cylinder Math to Solve Brake Pedal Woes
I have a ’64 El Camino that has been converted to front discs using 1970 Chevelle parts. I was told that I should change the master cylinder as well, […]
Ask Away! with Jeff Smith: Why You Should Locate Fuel Pressure Regulators Near the Engine
I am making plans for an LS-swapped Chevelle with all kinds of cool parts, so I’m building the car in my head. I’ve seen lots of people use that Corvette […]
Ask Away! with Jeff Smith: How to Identify Gasket Leaks and Fix Them
I have a 383 c.i. small-block Chevy that I recently rebuilt and installed in my ’72 El Camino. Unfortunately, it appears that the rear main seal is leaking. I’m pretty […]
Ask Away! with Jeff Smith: Choosing the Largest Camshaft Isn’t Always a Good Idea
I have a 496 Chevy and I want to go with a tunnel ram. What is the largest cam I can go with? It is going in a rat rod […]
Ask Away! with Jeff Smith: Replacing an Antiquated Distributor on a Small Block
I have a 302 Ford in my street rod and have been using the Mallory Unilite distributor for years. Lately it’s been acting up and I can’t buy parts for […]
Ask Away! with Jeff Smith: Optimizing Gear Ratio for Overdrive at Cruising Speeds
I have an early 70s Chevelle and I am planning for either a 700R4 or maybe a 4L60E. The car right now has a mild big-block 454 and I’m looking […]
Ask Away! with Jeff Smith: How to Tune the Idle Speed on a Self-Learning EFI System
I recently bought a FiTech Go EFI fuel injection system for my big-block Chevelle. The engine is a 468ci big-block with a mild hydraulic roller cam, a TH400, a warmed-over […]
Ask Away! with Jeff Smith: How to Choose (or Build Your Own) PCV System to Control Oil Vapor
I have a 472-cubic-inch engine in my ’69 Cadillac and I have a problem with oil vapor covering my nice new aluminum valve covers. I had a PCV valve on the […]