If you’ve spent any time fiddling with cars you know the name Holley. While fuel system components, most notably carburetors, came to be the company’s claim to fame, the founders, brothers Frank and George Holley, started off in the automobile and motorcycle business. As young men the brothers designed and built a single-cylinder engine in 1897 that powered a three-wheeled vehicle they called the Runabout. That was followed by a stint manufacturing motorcycles and motorcycle engines after which the brothers began producing their second production car in 1903, the Holley Motorett. Approximately 600 of the four-wheel cars were sold with only three surviving today.
By 1904 the Holleys were making carburetors for Oldsmobile, which got the attention of Henry Ford. Ultimately Holley became one of Ford’s major suppliers for Model T carburetors (model NH), produced the model 94 two-barrel that was used on a variety of Ford engines from 1938-1957. By the time the ’60s rolled around Holley’s Model 4150 was standard issue on many of the most feared muscle cars of the day. And of course the Holley double-pumper and the Dominator became legendary performance carburetors.
Given Holley’s history of designing and manufacturing bulletproof fuel system components it wasn’t much of a surprise when Holley came up with a retrofit EFI system roughly three decades ago. Since then Holley has continued to refine their systems—efforts that led up to the Sniper EFI. The Sniper throttle body will fit single and dual four-barrel square flange manifolds—the four-injector version is capable of supporting 250-650 hp while the eight-injector system is capable of feeding up to 1,250 hp. Certainly the Sniper’s ability to feed big horsepower numbers is impressive, but like most street rodders who drive their cars regularly, Al Scudellari was looking for a system that combined performance with driveability and reliability. Coupled with Holley’s clear and concise instructions and reference manual, the Sniper EFI was a natural choice to install on his small-block–powered 1946 Chevy.
To simplify installation, the ECU (electronic control unit) is incorporated into the throttle body, which means there is no external box to mount. The TPS (throttle position sensor), MAP (manifold air pressure sensor), and IAC (idle air control) are all contained within the throttle body as well so all that has to be added to the engine is the coolant temperature sender and the oxygen sensor. Holley has even gone so far as to include a clamp-on oxygen sensor bung so no welding on the exhaust system is required.