540 Cubes of Fun: Finishing and Dyno Testing a 712 Horsepower Big Block Chevy
Well, our (really) big block Chevy is done and had its maiden voyage on the dyno. We already gave away the ending by telling you how much horsepower the 540 […]
10 Questions with Colin Kinser from Holley on the Sniper 2 System & EFI Conversion Tech
When the Sniper 2 EFI system broke cover last summer, it was an evolution of Holley’s popular throttle body electronic fuel injection conversion kits—offering plenty of refinement and enhancements over […]
Video: What’s the Difference Between the Holley Sniper 1 & Sniper 2 Throttle Body EFI Systems?
Holley upped the ante on fuel injection swap kits with its newly redesigned Sniper 2 Self-Tuning Throttle Body EFI system. And while we recently wrote an entire in-depth article on […]
Holley’s Sniper 2 Throttle Body EFI System is the Next Generation in Fuel Injection Conversion Kits
When Holley introduced its Sniper Throttle Body EFI system back in 2015, it was a game-changing moment in the history of fuel injection conversion kits. The Sniper offered a straightforward […]
Ask Away! with Jeff Smith: Finding a Replacement for a Leaky O-Ring on a Holley Carburetor
I’m having a real problem keeping my Holley carburetor needle and seat O-ring from leaking. My old Holleys worked fine up until about a year ago. Now it seems both […]
Street HP—Going Your Classic Holley 4150 One Better!
Who could resist the classic Holley 4150 double pumper carburetor with mechanical secondaries and a throaty voice—an American classic for generations of street performance weekend drag racing enthusiasts? Not many […]
The High 5! Building a 500 Horsepower All-Motor 5.3L LS
We all know that making big power with an LS is as easy as adding boost, right? In fact, the recipe for huge power is to add cam, springs, and […]
Ask Away! with Jeff Smith: How to Tune a Holley Street Avenger Carburetor for High Altitude Operation
My 670 cfm Holley Street Avenger carburetor on my 427ci Cobra engine (small block Stroker) has never worked properly since I have owned it. Just as your articles on tuning […]
Long Rod Chevy 307 = Big Power
Chevrolet’s 307ci small block has long been viewed as a mild-mannered grocery getter. You’ve seen hundreds of thousands of them in Chevelles, Novas, Camaros, and untold other mainstream Chevys. We […]
Ask Away! with Jeff Smith: Understanding Carburetor Power Valve Channel Restrictors
I’ve read your article on carb tuning about 5 times. I have a 650 cfm SS-AN annular discharge Quick Fuel carburetor with the changeable jets behind the power valve. Are […]