Global West Front Big-Block Springs 1967-70 Ford Mustang

Global West highly recommends linear rate springs (also known as constant rate) over variable; not that variable rate springs are bad, but linear rate springs provide the best performance for muscle cars.

Here is why Global West recommends linear rate springs:

Consistency - As a linear spring is compressed, the resistance increases per inch equal to that of the rate. For example, if a spring is rated at 300 pounds per inch, for every inch of travel the spring compresses, the resistance increases 300 pounds. Therefore, one-inch of compression will provide 300 pounds of resistance, two-inches 600 pounds, and 3-inches 900 pounds. Variable rate springs, however, do not increase in the same fashion. They are generally rated with a lower spring rate on initial, and build to the desired rate. Example: The first one-inch of travel might start out as 250 pounds per inch, the second inch 560, and the third 900. For a driver who is looking to improve their driving skills, a vehicle must give predictable feed-back each time during cornering and trail-braking. A linear spring will do that because the rate is consistent.

Less chance of bottoming - Lowered cars always have reduced suspension travel. the lower you go the less travel is available. Variable rate springs tend to allow more travel before the spring can build rate, keeping the suspension from bottoming. The question is: Is there enough suspension travel available while the spring builds enough resistance (rate) before bottoming occurs?

Variable rate springs tend to over emphasize the geometry curve giving us more tire movement than necessary.

Chassis diagnostics is difficult.

All Global West lowering springs generally lower the vehicle one-inch in the front and up to 1-1/4 inches in the rear depending on the option for your vehicle. They lower the vehicle to these specs because there is not enough suspension travel beyond one inch for street applications.

Note:

Sold in Pairs

Springs are designed for standard front suspensions

JEGS 81800 - Steel Spanner Wrench Set

$18.00

JEGS 81802 - Universal Billet Spanner Wrench Set Removable Teeth

$24.99

Some parts are not legal for use in California or other states with similar laws / regulations

Motor Vehicles

WARNING: Motor vehicles contain fuel, oils and fluids, battery posts, terminals and related accessories which contain lead and lead compounds and other chemicals known to the State of California to cause cancer, birth defects and other reproductive harm. These chemicals are found in vehicles, vehicle parts and accessories, both new and as replacements. When being serviced, these vehicles generate used oil, waste fluids, grease, fumes and particulates, all known to the State of California to cause cancer, birth defects, and reproductive harm.

Tools:

WARNING: Some dust created by power sanding, sawing, grinding, drilling, and other construction activities contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Some examples of these chemicals are: lead from lead-based paints, crystalline silica from bricks and cement and other masonry products, and arsenic and chromium from chemically treated lumber. Your risk from exposure to these chemicals varies, depending on how often you do this type of work. To reduce your exposure, work in a well-ventilated area and with approved safety equipment, such as dust masks that are specially designed to filter out microscopic particles.

Electrical Cords

WARNING: The wires of these products contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Wash hands after handling.

domReady(function(){RT.fxns.cookie.set("continuePage", window.location, 1);});

Global West Front Big-Block Springs 1967-70 Ford Mustang

Part Number: 459-S-27

Items You Need

Items You May Also Consider

Specifications:

Items You Need

Motor Vehicles

Tools:

Electrical Cords