Holley to Supply EFI Throttle Bodies to NASCAR Teams in Transition to Fuel Injection – UnderhoodService

Holley to Supply EFI Throttle Bodies to NASCAR Teams in Transition to Fuel Injection

Holley Performance Products has been selected by NASCAR to supply high performance throttle bodies to Sprint Cup Series teams as they transition to electronic fuel Injection in 2012.

Holley has a long standing relationship with NASCAR helping assure high quality fuel delivery products have been supplied to their teams for over 40 years. Holley Carburetors have powered every professional NASCAR team since the 1960s.



“Holley is proud to have powered the amazing machines found in NASCAR for over four decades. We’ve successfully delivered the fuel for 28 million miles in NASCAR cup series racing alone, not including NASCAR Nationwide, Camping World Truck, and other NASCAR series we work with. We have spent nearly two years engineering our new throttle body for NASCAR and are confident we will continue to get the job done as they make the change to fuel injection,” said Holley CEO, Tom Tomlinson.



Holley will manufacture the new throttle bodies in their ISO 9001:2008 certified Bowling Green, KY facility – the same facility where the majority of their NASCAR Carburetors have been manufactured. The throttle body is a critical component in the electronic fuel Injection system and will be the key to regulating the airflow to the NASCAR racing engines. The Holley throttle bodies were designed using computational fluid dynamics (CFD) software to assure the airflow met NASCAR specs.



The new Holley throttle bodies are constructed of aerospace quality billet aluminum and will be machined on five-axis CNC machines to hold the demanding tolerances required in NASCAR racing. They feature 17-4 stainless steel throttle shafts, throttle levers and linkage to handle the extreme conditions found in NASCAR racing.

The throttle shafts and throttle plates are profiled for maximum airflow. The throttle shafts will ride on sealed needle bearings for smooth operation and durability. The venturii have been contoured for efficient yet maximum airflow. A positive throttle stop has been built in as an added safety feature. Each throttle body will be anodized for corrosion protection and then individually serialized for NASCAR.



“The fuel Injection side of our business is a critical path to our future. We have a lot of excitement around our new fuel Injection program and the NASCAR throttle body will help us continue on that path. NASCAR teams demand the best and we intend to keep delivering just that,” said Tomlinson.



For more information about Holley, visit www.holley.com.

You May Also Like

Lifter Deactivation

The area of contact between the lifters and cam lobes is the highest loaded surface inside an engine.

The basic function of a valve lifter is pretty simple. It sits on the camshaft and transfers the motions of the cam lobe up through the pushrods and rockers to open and close the valves. The size and shape of the cam lobe under the lifter (multiplied by the ratio of the rocker arms) determine valve lift and duration. As such, the lifter just follows the motions of the cam. But, it does play a role in valvetrain lash (clearance) and noise.

Alternator Testing For No Charge Conditions

Many alternator problems turn out to be nothing more than a bad connection at the alternator or a bad wiring harness.

Understanding Coolants

All-season coolant used inorganic acid technology and worked great for almost 30 years.

Ignition System Do’s and Don’ts

Why do ignition systems give technicians problems when diagnosing ignition-related misfires? The answer is that some technicians use tests that might give inconclusive results or do damage to the coil or drivers inside a module.

Tools To Service Serpentine Belts

Servicing the serpentine belt on some vehicles is a tough task.

Other Posts

Battery Charging and Diagnostics

Here are six tips to use when diagnosing a vehicle with a dead battery. 

Why Do Timing Chains Stretch?

As the timing chain wears, it can change the timing of the camshaft and crankshaft.

Carbon Deposits and Direct Injection Engines

The primary cause of these problems is that fuel and added detergents are not hitting the back of the intake valves.

Acura Turbo Engine Service

It is important to check the operation of the solenoids that control vacuum to the actuators.