More Lift, Better Lug Nuts, and a Billet Radiator Neck: The Latest Summit Racing Brand Products

Who doesn’t like more valve lift, high-quality wheel lug nuts, or a nice billet aluminum radiator neck? Nobody we know, which is why we now have high-lift valve spring kits for GM LS engines, complete lug nut kits, and a weld-on fill neck for radiators and coolant tanks.

Summit Racing™ Pro LS High-Lift Valve Springs for GM LS
High-lift camshafts are more the norm than the exception these days. Cams rated around .600 to .625 inches of valve lift are all over the place. Stock springs are only good for around .500 inches of lift so you’ll need a good set of valve springs designed to match one of those cams. Summit Racing™ Pro LS High-Lift Valve Springs are a single beehive design and are an inexpensive way to extend the engine’s operating range and keep everything under control at high RPM. The springs are a drop-in replacement for factory springs and come in sets of 16.

Pro LS Valve Springs, .600" Max Valve Lift
• 1.290" diameter
• 1.800" installed height at 135 lbs. seat pressure
• 1.200" max lift at 320 lbs. open pressure
• 310 lb./in. spring rate

Pro LS Valve Springs, .630" Max Valve Lift
• 1.300" diameter
• 1.800" installed height at 140 lbs. seat pressure
• 1.170" max lift at 350 lbs. open pressure
• 340 lb./in. spring rate

Summit Racing™ Wheel Lug Nut Installation Kits
Our Wheel Lug Nut Installation Kits take the guesswork out of choosing the proper lug nuts for your wheels. The nuts are made from high-quality steel, are tested for hardness, thread accuracy, and overall quality, and given a final visual inspection before they go out the door. You get enough lug nuts to mount four wheels, and most kits include four rubber valve stems.

Summit Racing™ Mag Wheel Lug Nut Installation Kits include 20 chrome-plated shank-style lug nuts with washers and four valve stems. Your choice of kits for most standard mag-style wheels and for Cragar SST wheels.

Summit Racing™ Spline Lug Nut Installation Kits are for tuner-style wheels that require smaller lug nuts. They come with 20 chrome-plated or black painted lug nuts and a socket key.

Summit Racing™ Bulge Wheel Lug Nut Installation Kits have bulged conical seats that ensure they don't get pushed into the socket and provide a better clamping area on the wheel. Your choice of chrome plated open-end and chrome or black closed-end nuts. Kits come with 16 lug nuts, four wheel locks, and four rubber valve stems.

Summit Racing™ Billet Weld-On Fill Neck
The Summit Racing™ Billet Weld-On Fill Neck is designed for custom aluminum radiators or remote-mount coolant tanks. It’s made from 6061-T6 billet aluminum and is tapped for a 3/8 inch barbed fitting if you want to plumb in an expansion tank.