The 1964 Ford F-100 had a standard leaf-spring suspension set up, common to all pickup trucks to this day. Leaf springs are layered metal strips located at the rear of the truck providing a spring action. The axle leading from the rear end to the rear wheel crosses over the center of the leaf spring. Lowering a 1964 F-100 requires installing a suspension kit with the desired lowering measurement. The job requires going under the rear of the truck to change the leaf-spring shackles.
Things You'll Need
- 3/8-inch drive socket wrench (preferably long handled)
- Socket, 13/16-inch
- Box wrench, 13/16-inch
- Small 3/8-inch socket extension (optional)
- Small tire iron
- Professional floor jack
- 2 jack stands
- 2 blocks
Place a block in front of both front wheels. Raise the truck using a floor jack under the rear-end housing until the rear wheels are slightly off the ground. Set two jack stands, one on each side of the frame, directly in front of each rear wheel. Carefully lower the Ford onto the jack stands and the raise the jack enough so it is tight to the rear-end housing. This prevents the axle and rear-end assembly from moving when the shackles are removed.
Locate the shackles at the rear of the Ford F-100 leaf spring, between the tire and shock absorber. Loosen both the top and bottom bolts using both the 13/16-socket and box wrench, one on each side of the bolt. It may be possible to loosen the top bolt using only the socket. Note the tightness of the bolts to get an idea of how tight the new shackle bolts need to be.
Remove the bottom bolts from the shackle. It may be necessary to jiggle the shackle assembly with a small tire iron to remove the bottom bolts.
Jack the rear-end housing enough to loosen the pressure on the top bolts. Remove the top bolts, install the new lower shackles, and hand-tighten the top bolts on both. Lower the floor jack enough so the lower bolt holes line up. Install and hand tighten the lower bolts. Use the tire iron to manipulate the shackles if necessary.
Tighten the two bolts on each shackle using the tightness of the old bolts as a reference. If not, tighten the bolts until snug, then turn the wrench one-half turn more.
Raise the jack to remove the jack stands, lower the jack and remove the blocks from the front wheels.
Tips & Warnings
- When jacking up and working under any vehicle, be sure to follow standard safety procedures.
- Photo Credit Thinkstock/Comstock/Getty Images
Specs for a 1961 Ford F100
The 1961 Ford F100 truck took advantage of a uni-body frame design in order to meet the needs of pickup truck consumers....
How to Lower a Truck With Leaf Springs
If you are a truck owner and want the look of a sleek, low-to-the-ground cruiser without shelling out a large amount of...
How to Lower a Pickup Truck
If you are into street trucks, you know that a low, sleek look is desirable, if not a necessity. There are kits...
How to Replace a Ford Rear End Seal
There are two seals commonly referred to as rear end seals in the Ford rear differential, the pinion seal and the differential...
How do I Identify a '64 Ford F100 Transmission?
Identifying early transmissions, such as the one on the 1964 Ford F100, depends on the engine and transmission options. According to the...
How to Adjust the Clutch on My Ford F-100
The Ford F-100 half-ton pickup was produced from 1953 to 1983 and was available in both two-wheel drive and four-wheel drive models....
How to Lower a Ford F100
The Ford F-100 was the last medium-sized pickup truck made by Ford before the F-150 came to dominate their truck lineup. Lowering...
How to Install Power Steering on a '64 Ford Truck
Installing power steering in your 1964 Ford truck is one project that puts your mechanical expertise to the test. For openers, you...