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1175 HP
This engine, and others like it, has opened up a brand-new chapter in the ever-evolving, wild world of Chevrolet power. By design it has a bore and stroke of 4.60 inches by 4.25 inches and Big Chief II heads, which are about 2 inches taller, that feature oval-shaped intake ports. This, they say, is for maximum cylinder filling. Years ago, creative racers would angle-mill heads to arrive at the desired combustion chamber size and to improve the valve angle in combination with the incoming intake flow. These heads are nicknamed “11-degree” heads, as they have been designed with a built-in 11-degree angle right out of the box. There’s no angle milling needed here. A special valvetrain is necessary, along with longer stem valves. Quarter Mile Performance feels that these heads are worth 200 additional horsepower over the very best “shorter” heads.

Bright Idea
Keith Bright was driving through tiny Basin, Wyoming (population just over 1,000), when he saw a ’58 Buick station wagon drive by in the opposite direction. “That’s strange,” he remembers thinking to himself. He could remember seeing only two other examples in his entire life. He had to have that car, but there was no time to follow the driver or flag him down. Bright returned to his home in Salina, Kansas, where he heads Bright Built Street Rods & Restoration, and occupied his time working on other people’s super rods. But he couldn’t get that ’58 wagon out of his mind.

Hot Stuff
When I got a call from Craig Lieberman, marketing director of MagnaFlow Performance Exhaust, to tell me about the company’s new Ti line, I was totally stoked. Not because it had anything to do with titanium, but because I was going to get a firsthand look at what the new stuff looked like and how it performs on the dyno. Although we didn’t expect anything in particular in terms of power, the weight savings alone was worth the install.
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Product Spotlight: Granatelli Motor Sports® 12v Electric Vacuum Pump Kit
We stopped by the Granatelli Motorsports booth at Holley LS Fest West to see what's new
Author
The Auto Builder Staff
Photography by Scott Killeen and Courtesy of Granatelli Motorsports
Granatelli Motorsports Unveils the 12V Electric Vacuum Pump Kit
We swung by the Granatelli Motorsports booth, eager to scope out their latest gear. Strap in, gearheads, ’cause Granatelli Motorsports is about to drop the ultimate solution for all your vacuum woes with their 12V Electric Vacuum Pump Kit!
Imagine this: your mean machine’s parked in the garage, but you’re wrestling with power brake glitches, wipers acting up, or engine management snafus all because of vacuum hiccups. Well, fret not, ’cause Granatelli’s rolling out the big guns with their top-shelf kit, primed to take on these challenges headfirst and give your ride a serious performance boost.
Now, let’s dive into the tech. Granatelli’s kit is like the vacuum pump rockstar, boasting next-gen technology that amps up suction while keeping things hush-hush and vibration-free. From sleek electroplated finishes to rugged ABS construction, you can customize your kit to match your ride’s vibe. And installation? A breeze, thanks to their slick MAVP sensor that kicks outdated relay systems to the curb.
But hold onto your hats – there’s more! Granatelli’s not just about style and convenience; they’re all about cranking up the horsepower, baby! By restoring crucial vacuum levels, this kit injects documented power back into your engine, ensuring you’ve got the muscle you crave when you drop that hammer. And let’s not forget about safety – with a firm pedal feel and optimized performance, you can bid farewell to those braking blues.
So whether you’re tearing up the track or cruising the streets, Granatelli’s 12V Electric Vacuum Pump Kit is your ticket to a smoother, more responsive ride. Say goodbye to vacuum-induced headaches and hello to high-octane performance – Granatelli Motorsports has got your back!
Granatelli Motor Sports 12-Volt Vacuum Pump Systems
Rotary Vein Style Pump with Enlarged Diaphragm Guarantees to be Super Quiet, Reliable and Increases the Speed of Recovery Once Activated Maintaining a Consistent 17” to 23” Hg Vacuum.
Bare, Black, Gun Metal Gray, and Chrome Housing Options Give Your System a Professional Look ,While Maintaining Proper Airflow Around the Pump.
Included Vacuum Hose is Top Grade Synthetic Reinforced 3/8” Tubing with .170 Wall Thickness.
Wiring Harness is EMI/RFI Protected with Fuse for Perfect Plug and Play Installation and No Other Noise Interference.
Simple Mounting Bracket Design Isolates Vibration While Maintaining a Common Mounting Hole Configuration To Allow Your System to Replace Similar Designs That May Have Failed or are Too Loud.
Fully Isolated Motor Assembly is Whisper Quiet.
20th Century MAVP, Manifold Absolute Vacuum/Pressure Sensor Eliminates Old School Vacuum Switch and Relay Design
To learn more, CLICK HERE to go to the Granatelli Motorsports website,
ARTICLE SOURCES
Granatelli Motor Sports
1000 Yarnell Pl.
Oxnard, CA 93033
805-486-6644







