COMP Cams 35-1001 Ford 302 HO Hydraulic Roller Lifter Kit User Manual

#35-1001 Ford 302 HO Hydraulic Roller Lifter Kit

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

This kit is designed to allow the installation of
hydraulic roller cams in standard Ford 302 HO V8
engines originally equipped with hydraulic roller
cams. In order to use this kit, your engine must have
two bosses cast into the block (fig. 1) in the lifter
valley area. These bosses may or may not be drilled
and tapped for 1⁄4"-20 bolts. If yours are not drilled
and tapped, then you must be prepared to do so
during this installation process. Once you have
installed your COMP Cams® Magnum Hydraulic
Roller Camshaft per the camshaft installation and
degreeing instructions supplied with the cam, you
are ready to install the hydraulic roller lifters.

Installation Instructions:

1. Installing the lifters - Slide the lifters into the lifter bores just like a regular lifter, and then rotate
them until the flat surfaces on the sides of each lifter all 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 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 it permanently.

2. Installing the lifter guides - The purpose of the
guides is to prevent the lifters from rotating,
therefore keeping the lifter wheels rolling over the cam
lobes as opposed to sliding. With all the flats on the
lifter in line, install one of the eight lifter guides over
each pair of lifters in the valley. They should be
installed with the word “UP” that is stamped into each
guide facing up. It does not matter whether the “UP”
stamp is toward the front or the rear of the block.
The forks on each end of the guides should nest over
the top of the flats on either side of each lifter. Also,

3406 Democrat Rd.

Memphis, TN 38118

Phone: [phone] Fax: [phone]

www.compcams.com

COMP Cams®

INSTRUCTIONS

Part #178

Revised 7/17/06

the lifter guides should sit perfectly flat on the milled top surface of the lifter bore pairs. If they do not,
stop and figure out why before proceeding. Failure to do so may result in significant engine damage.

3. Installing the lifter retention hardware - Place the
stamped steel lifter retainer in the valley of the block and
see which of the two holes in the retainer line up with
the tapped holes in the cast bosses in the valley. The
fingers of the retainer should be between the pairs of
lifters and riding on the raised ball area of the lifter
guides. It may be necessary to rotate the retainer end for
the end to get the holes to line up. If your bosses are not
drilled and tapped, use the lifter retainer as a guide for
marking the proper location of the future holes. Be sure
that the retainer fingers are centered between the lifter
pairs and riding on the raised ball area of the lifter guides before marking the hole locations. Mark the
holes with a center punch, remove the retainer, and drill and tap the holes as necessary. Do not allow
any metal shavings created during the drilling and tapping process to remain in the engine. Severe
engine damage may result.

4. Final assembly of lifter retainer - Lower the retainer into the
valley, centering the correct holes over the bosses and making
sure once again that the fingers of the retainer are between pairs
of lifters and riding on the raised ball area of the lifter guides.
Start both of the retainer bolts supplied in the kit by hand and
torque to 20 ft lbs.

5. Final check - Spin the engine over by hand at the crankshaft
with a wrench (or COMP Cams® Part #4798 crank socket) and
watch closely the movement of the lifters. As the lifters move up
and down, the lifter guides should remain perfectly flat on the
tops of the lifter bores. They should not be pushed up at all by the
up and down motion of the lifters. If they do, the camshaft does
not have the correct base circle size to be used with these lifters.
Stop here and replace the cam with the proper one before
proceeding, running the engine with this condition in existence
will result in major engine damage.

The installation of your COMP Cams® Ford 302 HO Hydraulic Roller Lifter Kit is now complete.
Refer to the camshaft installation and degreeing instructions that came with your cam for further
instructions on pushrod installation and valve adjustment that are needed to complete your project.
Order COMP Cams® Camshaft Degree Kit (Part #4796) to make these adjustments easier.

COMP Cams®

3406 Democrat Rd.

Memphis, TN 38118

Phone: [phone] Fax: [phone]

www.compcams.com

Part #178

Revised 7/17/06