Engine & Exhaust / Induction

Fully Primed: Not All Electric Fuel Pumps Are Created Equal

Electric fuel pumps are, for the most part, standard equipment in drag racing. Ditto with fuel injected applications. But a lot of carbureted street cars use them too. Fair enough, […]

Engine & Exhaust / Induction

The Forgotten Warrior: Chevy 305 (5.0L) Small Block V8 Performance Upgrades

Try this experiment the next time you are sitting around the garage or online, talking about small block Chevy performance. When everyone is talking about DZ302s, 365 hp 327s, and […]

Induction / Q&A

Ask Away! with Jeff Smith: Should I Drill Air Bypass Holes In All 4 Carb Throttle Blades to Improve Idle?

Recently you wrote an article that mentioned drilling holes in all four throttle blades on the Holley carb to change the blade position compared to the transfer slot. I have […]

Induction / Tech / Tech Articles

Terminator on Ice: Adding a Zex Nitrous Kit to a Supercharged 2003 Ford Cobra 4.6L!

What is your favorite power adder? The question is actually quite common among performance enthusiasts. The problem is often choosing between the different types. Let’s face it, as good as […]

Induction / Tech / Tech Articles

Ditch The Blower: 600 HP Turbo 3800 V6 Build

When it comes time to talk about engine swaps, the first motor that comes to mind is probably the GM LS. Long the darling of the industry, the LS has […]

Induction / Q&A

Ask Away! with Jeff Smith: Some Calculations & Guidelines for Blending Fuel Octanes

I came across your article on blending E85 with pump gasoline and I have a question. I have a C7 ZR1 that is un-tuned that needs 96 octane to prevent […]

Induction / Tech Articles

How Transparent Fuel Lines Helped Solve a Decades-Old Motorcycle Idle Problem

I’ve had an on-again/off-again love affair with my father’s 1970 Honda CB350 motorcycle. With twin megaphone mufflers, chrome fenders, and a hipster-chic kickstart, the little street bike just oozes retro […]

Induction / Parts / Product Profiles / Tech

Track Testing the Summit Racing MAX-efi 500 EFI System

Summit Racing’s MAX-efi 500 electronic fuel injection system has proven itself as an affordable way to convert a carbureted street engine to EFI. Capable of handling up to 500 horsepower, […]

Induction / Q&A

Mailbag: Leaning-Out a Holley 650 Double Pumper’s Rich Idle Fuel Mix

Q. I have a Chevy 350 engine with a Holley 650 double pumper and a COMP Cams Xtreme Energy camshaft in my street rod. I’m unable to get the idle […]

Induction / Q&A

Ask Away! with Jeff Smith: Tuning Out a Rich Mixture on a 455 Oldsmobile with a Quick Fuel Carburetor

I’m having a hard time with the 750 vacuum secondary Quick Fuel Slayer carburetor on my low compression 455 Olds. The engine has a mild 218/218 cam and good manifold vacuum at […]