The original Holley Model 4150 carburetors were introduced over 30 years ago. While the now-classic design has withstood the test of time and outlasted most other competitive 4-barrels, inevitably the ...

You know the Holley name and you probably associate it with carburetors. Holley has recently expanded its realm to a series of capacitive-discharge (CD), multiple-spark, microprocessor-controlled ...

With our M715 sucking down fuel at a rate of 4 mpg, we knew we had to do some-thing. We were running a Holley 670cfm Truck Avenger on our Chevy V-8, and thanks to an AEM wide-band O2 sensor, we knew ...

With trucks evolving faster than a clean freak can go through a gallon of quick detailer, some of the basic mechanical skills are getting pushed back into the memory banks. Things like plugging in a ...

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