The Easy Way to Make 820+ HP in a 4.8L Junkyard Pull
Never before have so many enjoyed so much for so little. Take a look around. We are smack dab in the middle of the second major Muscle Car era, and […]
Mailbag: Q-Jet Carb is a Great Choice for Off-Road 4×4
Q: I have a 1973 Chevy K20 truck with an aluminum-head, roller cam 383 stroker. I’ve heard from some of my old-school gearhead friends that a properly tuned Quadrajet is […]
Mailbag: How Exhaust Runner Volume Affects Engine Performance
Q: How is exhaust runner volume measured and how does it affect performance? … A: Exhaust runner volume is the measure of the passage from the exhaust valve to the […]
Clash of the Turbo Titans: Summit vs. eBay Turbos
Turbos rule. If you’re a turbo guy (or gal), there has never been a better time to be an enthusiast. Just look around, turbos are everywhere and on everything. Not […]
Ask Away! with Jeff Smith: Matching Fuel Pumps, Lines & Injectors for Max Power
I need help understanding EFI high pressure fuel systems. I have researched all over but the answer eludes me. What determines line size? I’m trying to build a Whipple Supercharged […]
Old vs. New: Comparing Vintage and Modern Intake Manifold Design
Intake manifold technology has progressed by leaps and bounds over the years. (Or, has it?) Additionally, there are many more players in the intake manifold business than we saw years […]
Ask Away! with Jeff Smith: Adding Power to a Ski Boat SBC—EFI or Carburetor?
I’ve got a direct-drive ski boat with a worn out 350 c.i.d. small-block Chevy. I’m thinking about building a new engine with modest goals. It’s a family boat, but I […]
Ask Away! with Jeff Smith: Tuning an Edelbrock 1406 Carb to Cure Fat-Running ’72 Jeep CJ-5
I have a 1972 Jeep CJ-5 with a 3.73:1 gear and 33-inch M/T tires. The engine is an AMC 360 rebuilt with 8.75:1 compression, stock heads, and a COMP Thumper […]
AN Fittings Torque Chart for Automotive Plumbing
AN stands for Army-Navy. The size specifications were established by the U.S. military during World War II and were originally used in the aerospace industry. AN fittings use a 37-degree […]
Project Firebolt: The LSX Turbo Tacoma (Part 10): Plumbing for Fuel, Oil and Water
It’s time to tackle the important job of plumbing the lines for all the vital fluids that will keep Firebolt alive and well. This turbo 5.3 will need plenty of […]