HOLLEY’S LATEST CREATION, THE SNIPER EFI RACE SERIES FABRICATED MANIFOLD, IS AN INNOVATIVE NEW DESIGN THAT ADDRESSES, POINT BY POINT, EVERYTHING THAT
RACERS THEMSELVES CAME UP WITH TO MAKE THE ORIGINAL SNIPER EFI INTAKES LAUNCHED IN 2015 EVEN BETTER.
These all-new manifolds, developed for the Ford Coyote 5.0L and GM LS1/LS2/LS6 platforms, deliver improved performance for hardcore drag racers searching for a competitive alternative to one-off sheet-metal intakes. “The biggest thing we learned from working with racers was that under boost, engines—especially engines with a two-step—need a manifold that’s welded both inside and out,” said Anthony Coles, director of business development for Holley Performance Products. “The weld fatigue that boosted engines can throw at a street/strip intake can sometimes be too much, so these have welded seams inside and out. They’re also 1mm thicker.”
A millimeter may not sound like much, but it represents a 25% increase in both overall strength and rigidity, and the greater weight of the sturdier sheet metal is more than offset by the strength gains. Manufactured from 5mm (13/64inch) T6061 sheet aluminum, each manifold is precision-fixtured for a perfect fit and 100% TIG-welded for maximum structural integrity.
Sniper EFI Race series fabricated manifolds feature equal runner lengths with a tapered top to increase velocity and more evenly distribute airflow to all eight cylinders. Longer intakerunner lengths create a wider operating range (2,100-8,200 rpm), and a larger intake plenum makes them ideal for boosted applications in general and race engines in particular.
Once again, what racers wanted, they got, and what they wanted was more. “A lot of the poweradder guys wanted bigger plenums—they don't care about hood clearance —so we made the plenum wider,” Coles said. (It’s now a full liter bigger.) “We lengthened the runners, too, but rather than change the overall height of the intake, we moved the runners further into the plenum.”
The Race series manifolds are available in two distinct finishes, bright silver or black-anodized. Ready to bolt on out of the box, they come complete with a high-flow fuel rail kit with a larger -10 crossover line, a throttlebody spacer and a removable top that makes them easy to inspect, modify and add sensors to.
“This is geared for a group of racers, but it’s geared specifically for them,” Coles said. “It easily handles up to 1,400 horsepower, and that’s where a lot of these guys are, the Drag LS guys and the Renegade guys. In so many ways, they’re limited to factory stuff to keep the class affordable and somewhat stock. And this is a lot more robust than stock.”
If you happen to compete in a category with a 90mm limit on throttle bodies, such as NMRA’s Renegade division, you’re in business. That’s exactly the size forward-thinking Holley engineers made the throttle body. “In the nottoo-distant future, we’ll more than likely expand this same series of intake with 92mm and 102mm throttle body sizes,” Coles said.
Running a first-generation Sniper intake, Renegade star “Bad” Bart Tobener, who was instrumental in the design of both that manifold and these new Race series Snipers, made the first seven-second run for the S550 platform last year at Indianapolis on just his second full quarter-mile pass ever in the car.
Initial response to the Sniper EFI Race series fabricated manifold has been great. “It’s already been approved for the Renegade category,” Coles said, “and we expect to see it on a lot of cars in that class, Drag LS and Coyote Modified in 2017.”