COMP Cams 31-1001 Ford Hydraulic Roller Lifter Kit User Manual
COMP Cams For the car
Ford Hydraulic Roller Lifter Kit
Part #31-1000 (Retro-Fit) & #31-1001
Thank you for choosing COMP Cams® products; we are proud to be your manufacturer of choice.
Please read this instruction sheet carefully before beginning installation and also take a moment to
review the included limited warranty information.
Before you Start
Please read these instructions carefully and completely before installing these products!
• This kit (Part #31-1000) is designed to allow installation of hydraulic roller cams in standard
Ford V8 engines (289, 302, 351W, 351C, 351M and 400M) not originally equipped with
hydraulic roller cams. However, it can only be used with specially designed COMP Cams®
retro-fit hydraulic roller cams with special sized base circles, or severe engine damage may
result. Also, this kit should only be used in engines with adjustable valve trains.
• This kit (Part #31-1001) is designed to allow installation of hydraulic roller lifters in standard
Ford V8 engines originally equipped with hydraulic roller cams. In order to use this kit, your
engine must have two bosses cast into the block in the lifter valley area. These bosses may or
may not be drilled and tapped for ¼”-20 bolts. If yours are not drilled and tapped then you must
be prepared to do so during this installation process.
Step 1 – Installing the Lifters
Slide the lifters (Part #851-16) into the lifter bores just like a
regular lifter, and then rotate them until the flat surfaces on the
sides of all lifters face inward toward the lifter valley. Each
lifter has two flats, one on each side. It does not matter which
flat faces the valley and which faces the cylinders. You may
encounter some difficulty in trying to install the end lifters in
each bank due to interference from an ear on each end of the
head gaskets. Gently bend this ear out of the way, install the
lifters, and then bend the ear back into place. The purpose of
this ear is to help locate the intake gasket during manifold
assembly, so do not bend or remove permanently.
Part #177
Revised 12/18/03
Kit Includes
• Lifter Guides (8)
• Lifter Retainer (1)
• Allen Bolts (2)