Holley-style carburetors powered every NASCAR Sprint Cup team and every NHRA Pro Stock champion until both series eventually switched to electronic fuel injection (EFI).

Among the company's owned divisions are brand names MSD Performance, Flowmaster, Hurst, Nitrous Oxide Systems (NOS), Weiand, Flowtech, Earl's Performance Plumbing, Hooker Headers, Demon Carburetion, Racepak, Superchips, Diablosport, Edge Products, Accel Ignition, Quick Time, Hays Clutches, Mr. Gasket, Lakewood, Mallory Ignition, B&M, APR and Dinan.

[13] That year Holley produced the Visi-flo carburetor, with a glass inspection window to make a visual check of the fuel level, sediment, flooding and float action.

"[15] In 1968 the Plain Dealer reported: "Colt Industries Inc. has acquired Holley Carburetor Co., of Warren, Michigan, following approval by directors of both companies.

Holley Carburetor which makes auto ignition systems and aviation fuel controls, employs about 3,000 at four facilities in three states.

"[16] At this time the corporate, engineering and sales headquarters were in Warren, with plants in Bowling Green, Kentucky; Paris, Tennessee, and Clare, Michigan.

[19] "Significant facilities expansions were initiated in 1979 at Water Valley, Mississippi to meet carburetor requirements for the new Ford Motor Company four-cylinder car, code named Erika, and in Bowling Green, Kentucky; Paris, Tennessee and Sallisaw, Oklahoma.

[21] Holley continued its dominance in racing, powering all winning NHRA Pro Stock racers and all NASCAR Sprint Cup Series teams.

The 1980s also saw Holley's entrance into the fuel injection market where OEM EFI components and analog Pro-Jection retrofit fuel-injection systems for carbureted cars were introduced.

[22] In 1999, after becoming independent of Coltec Industries, the management team purchased a number of other aftermarket companies in an effort to provide a "full package" to their customers/dealers.

These companies include: Weiand (intake manifolds and superchargers), B&M's supercharger division, Hooker Headers, Earl's Performance Plumbing, Flow Tech exhaust, Lunati (camshafts, crankshafts, pistons and connecting rods), NOS (Nitrous Oxide Systems, Inc), and So-Cal Speed Shop, as well as a few ancillary companies.

I have already seen the excitement everyone has about the company and as an enthusiast myself, I can’t wait to get to work.” 2011 - NASCAR decides to switch from carburetors to fuel injection systems for the 2012 Sprint Cup racing season.

[27] 2013 - Holley HP EFI engine control unit (ECU) became standard equipment used on all of Chevrolet Performance's COPO Camaro factory-built race cars.

[36] in 2018, Lincolnshire Equity IV, L.P. sold Holley to Sentinel Capital Partners who merged the company with its Driven Performance Brands