©2006 Edelbrock Corporation
Brochure #63-1602
Page 5 of 6
Catalog #1602, 1615
Rev. 4/06 - RS/mc
PUSH ROD INSTALLATION
NOTE:
There is one length push rod for each of four
locations
(See Figure 10)
. Be sure to color match each
push rod to its correct valve and cam lobe; purple to rear
exhaust; blue to rear intake; yellow to front intake; and green
to front exhaust.
3.
Cylinder Head bolt torque sequence
(See Figure 8):
The procedure for tightening the head bolts is extremely critical; not
only to prevent gasket leaks, but to prevent stud failure and heads
and cylinders distortion.
CAUTION
Be sure you thoroughly clean and lubricate the
cylinder head bolts before tightening to the correct
torque. Friction because of dirt or grime will cause
the torque wrench readings to be incorrect. Clean
and lubricate the threads with engine oil and screw
the bolts onto the crankcase studs by hand to be sure
there is no friction.
A.
Cylinder Head Torque Sequence for 1984-85 Models
CAUTION
Use only original equipment head bolts and studs
for your year vehicle to ensure proper torque and
head gasket life.
1.
See Figure 8
. With a torque wrench, start at the
cylinder head bolt numbered "1" and tighten to 7-9
ft./lbs. Then tighten "2", "3", and "4" in order to 7-9
ft./lbs.
2.
Following the torque sequence, tighten each bolt to
15-17 ft./lbs.
3.
Following the torque sequence, tighten each bolt to
24-26 ft./lbs.
CAUTION
The cylinder head bolts are not to be checked
for tightness after final torquing at reassembly
is completed. Retightening the bolts to
specified torque at regular intervals will place
undue stress on bolts and bolt anchoring
threads.
B.
Cylinder Head Torque Sequence for 1986-95 Models
CAUTION
Use only original equipment head bolts and studs
for your year vehicle to ensure proper torque and
head gasket life.
1.
See Figure 8
. With a torque wrench, start at the
cylinder head bolt numbered "1" and tighten to 7-9
ft./lbs. Then tighten "2", "3", and "4" in order to 7-9
ft./lbs.
2.
Following the torque sequence, tighten each bolt to
12-14 ft./lbs.
3.
See Figure 9
. Mark a line on the cylinder head and
a corresponding line on the head of the cylinder head
bolt as shown in View A.
Following the same
sequence 1, 2, 3, then 4, turn each bolt, one at a time
one quarter turn (90°) using the marks as a guide.
When marks are all positioned, as in View B, the
procedure is completed.
Figure 9 - Tightening 1986-1995 Head Bolts
PUSH ROD POSITION
COLOR CODE
Rear Exhaust
Purple
Rear Intake
Blue
Front Intake
Yellow
Front Exhaust
Green
Figure 10 - Push Rod Color Code & Position
1.
Rotate the engine so that both lifters of the cylinder being serviced
are on the base circle (lowest position) of the camshaft.
2.
Refer to
Figure 1
. Install push rod covers and associated parts,
using new O-rings. Install push rods.
NOTE:
Be sure to use new O-rings on push rod tubes to
prevent leaks. Also check carefully to be certain old O-rings
were removed from push rod tubes and lifter bores.
3.
Install gaskets (15 and 16). Place lower rocker box assemblies (17;
with rocker arms and shafts) in position.
NOTE:
Rocker arm shafts are notched to accept the rocker
arm retaining bolts. Align the notches with the bolt holes
before installing the bolts
(See Figure 11)
.
4.
Install bolts and washers (11 and 12, 13 and 14). Slowly snug lower
rocker box fasteners in small increment (one at a time) in a cross
pattern. This will bleed the lifters. Check carefully as you go to be
certain push rods are still in their proper position in the rocker arm.
Tighten the 5/16" bolts (11, 12) to 15-18 ft./lbs. and tighten the 1/4"
bolts (13, 14) to 10-13 ft./lbs.
