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INSTALLATION:
Note: Prior to assembly, the following should be checked:
1.
Valve to Cylinder Wall Clearance
2.
Piston to Valve Clearance
3.
Piston Dome to Combustion Chamber Clearance
3.
Rocker Arm to Valve Cover Clearance
4.
Rocker Arm to Valve Cover Rail Clearance (intake only)
Installation is the same as for original equipment cylinder heads.
Consult a service manual for specific procedures, if necessary. For
454 and small Mark IV engines, use Fel-Pro head gasket #1017-1, or
equivalent. For 502 c.i.d. Gen V and Gen VI engines, use Fel-Pro head
gasket #1047 or equivalvent. Be sure that the surface of the block and
the surface of the head are cleaned thoroughly to romove any oily film
before installation. Use alcohol or lacquer thinner on a lint-free rag to
clean. Apply liquid Teflon PST or suitable thread sealer to head bolt
threads that thread into coolant passages. Torque the head bolts to 70
ft-lbs in three steps, following the factory tightening sequence (See
Fig. 1) . A re-torque is recommended after initial start-up and cool-
down (Allow 2-3 hours for adequate cooling).
Part #61409
Rev. 3/11 - AJ/mc
Figure 1 - Cylinder Head Bolt Torque Sequence and Bolt Boss Height Chart
Torque Bolts to 70 ft.-lbs In The Sequence Shown
Boss Height and Bolt Length
Letter
Boss Height
A
3.38"
B
3.38"
C
4.69"
D
1.38"
Edelbrock LLC • 2700 California St. • Torrance, CA 90503
Tech-Line: 800-416-8628 • Office Line: 310-781-2222
SPECIFICATIONS:
Head Bolt Torque:
Rocker Stud Torque:
Combustion Chamber Volume:
Deck Thickness:
Valve Seats:
Valve Diameter:
Valve Length:
Valve Stem Diameter:
Valve Spring Pocket Diameter:
Valve Springs:
Valve Spring Seats:
Valve Spring Retainers:
Valve Locks:
Recommended Bolt Length
4.19"
4.50"
5.50"
2.19"
®
Page 2 of 2
70 ft.-lbs.
45 ft.-lbs.
119 cc
5/8"
Hardened, interlocking, compatible
with any fuel
Intake - 2.30", Exhaust - 1.90"
Intake - 5.625", Exhaust - 5.425"
11/32"
1.76"
Manley #221424 (Dual Spring)
Manley #42121
Manley # 23640 (Titanium)
Manley #13194 (10°)
Qty.
6
2
4
4
©2011 Edelbrock LLC
Brochure #63-0459
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