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Here Is The Correct Procedure For Setting An Optimized Idle Mixture And Speed - 01/27/2021

While it may seem an unimportant detail on the way to making headline horsepower, the truth is that a typical street performance engine will spend more operational time at closed throttle than at any other engine speed. So it’s important this setting be adjusted properly. The benefits will more than outweigh the effort required to perform this correctly. - Read More

Holley's Ultra XP 4150 Is One Trick Small-Bore Race Carburetor - 04/14/2021

If you’re into motorsports in general and racing in particular, you’ll know that the standard for carburetors has always been Holley’s 4150 double pumper series. Period. There's a good reason for this: They’re easy to overhaul. Parts are plentiful and easy to find. Best of all, they’re incredibly easy to tune. - Read More

How To Tune The Power Valve In A Holley Carburetor - 12/17/2020

Even the name “power valve” sounds impressive. There’s a power valve in every Holley four-barrel carburetor and we’re going to show you how it can offer improvements in throttle response and even potentially save a little fuel for the guys who plan on lots of highway and street miles. - Read More

Dyno Tested: How To Choose The Right Intake Manifold For Your LS Engine - 04/02/2021

The intakes set to be tested were a Holley Hi-Ram with dual 4150 throttle bodies, dual 4500 throttle bodies, a front feed plenum, and MSD’s popular Atomic AirForce polymer intake. Each of these intake configurations represents a popular combination used for a wide range of racing types, so putting them all on the dyno with the same engine would paint a very clear picture where each of them shines. - Read More

This 1961 Ford F-100 Unibody Is The Latest Holley Resarch And Development Vehicle - 06/28/2021

Pickup trucks of the early 1960s were a far different machine than what is sold on your dealer's lots today. Creature comforts were few and far between, handling was not a priority, and power was only present when moving a load was part of the program. - Read More

Inspiration        

LS Fest West 2021: This 1962 Volvo Amazon Packs an All-Aluminum LS and Restomod Style

Inspiration        

LS Fest West 2021: 1939 Chevy Rat Rod Packs a Blown LS, Holley EFI and AC!