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We highly recommend that premium quality hardware be used with your new heads.
•
HEAD BOLTS OR STUDS: High quality 1/2" head studs or head
bolts with hardened washers must be used to prevent galling of the
aluminum bolt bosses. The head bolt boss heights and required bolt
lengths are listed in the "Specifications" section on Page 3. See
Figure 1 for the cylinder head bolt tightening sequence. Bolt
threads, underside of bolt heads, and washers should be lubricated
with an oil/moly mix prior to installation and torquing. Apply liquid
Teflon PST or suitable thread sealant on any bolt threads that go into
coolant passages.
NOTE: This head has provisions for eight (8) auxiliary fasteners
per head. These provisions are located adjacent to each
exhaust port and directly below each intake port. A hole will
need to be drilled through both the roof and the floor of the
intake ports, and a plug installed to prevent oil seepage. Head
bolt length for these provisions will vary by application and
should be determined by the engine builder.
•
GASKETS:
Fel-Pro head gaskets can be used with any
application utilizing the standard ten (10) bolt per head pattern.
#1134 will work with engines having a bore diameter up to
4.180", and #1135 will work with bore diameters up to 4.210".
Applications using the eight auxiliary head bolt provisions
should use the head gasket recommend by the manufacturer of
the engine block.
ROCKER ASSEMBLIES: Shaft mounted rocker arms are required.
Edelbrock recommends the use of Jesel or T&D rocker shaft
assemblies. Eight (8) 7/16"-14 heli-coils have been supplied to
ensure the stability of the rocker system. These will need to be
installed by the engine builder. Significant thread depth has been
added to these holes to improve bolt retention and the longevity of
valvetrain components under the extreme conditions generated in a
racing enviroment.
•
PISTONS: The unique chamber and valve placement of the SC-
1 cylinder head are ideally complimented by custom pistons,
however several manufacturers have compatible shelf pistons.
Valve angles are 7.3° by 0.3° cant intake and 6.9° by 0.6° cant
exhaust. Pistons designed for a Ford Yates type head or for the
Ford SC-1 are generally compatible, or can be made to work
with minimal machine work. Check with your preferred piston
manufacturer to see if they carry an application specific part
number.
•
INTAKE MANIFOLD:
Victor manifolds for use with the Glidden Victor SC-1 cylinder heads.
Refer to the table below to determine the best match for your
application:
Manifold Part # Intended Deck Height Carburetor Pad Flange
2860
2865
9.2, 9.5*
2868
*End seal spacers #2864 will be required to use #2865 on a 9.5" deck.
Catalog #770769
Rev. 1/08 - AJ/mc
Edelbrock has developed several Super
9.5
4150
4500
9.5
4500
ACCESSORIES
•
EXHAUST HEADERS: Any header designed for Yates heads will fit
the Edelbrock Glidden Victor SC-1 cylinder head. Fel-Pro exhaust
gaskets #1433 or equivalent are recommended. Check in-car
fitment, as these ports are raised significantly from the stock
location.
•
VALVE COVERS: The valve cover flange is designed to work with
Cleveland style valve covers, though the shaft rocker assembly will
often require greater clearance than stock.
Aluminum covers #4267 have been designed specifically for use on
SC-1 heads.
•
SPARK PLUGS: Use 14mm x 3/4" reach gasketed spark plugs
with a 5/8" hex. Heat range for competition engines will vary by
application. Use anti-seize compound on the plug threads to
prevent galling in the cylinder head, and torque to the spark plug
manufacturers specification for aluminum heads; usually 10 ft./lbs.
DO NOT OVERTIGHTEN!
•
VALVES AND VALVESPRINGS: Edelbrock Glidden Victor SC-1
cylinder heads will accept an intake valve with a diameter up to
2.25" and an exhaust valve diameter up to 1.70". The supplied
valve guides are deigned to work with an intake valve stem diameter
of 5/16" and exhaust valve stem diameter of 11/32". Length will
need to be determined by the engine builder once the valve seats
have been installed in their desired location. These cylinder heads
are equipped with a 1.760" valve spring pocket diameter. Edelbrock
strongly recommends the use of a hardened steel cup or shim below
the valve spring to prevent damage to the head. Refer to cam
manufacturer for recommended spring pressures.
Installation is the same as for original equipment cylinder heads. Consult
service manual for specific procedures, if necessary. Be sure that the
surface of the block and the surface of the head are thoroughly cleaned
to remove any oily film before installation. Use alcohol or lacquer thinner
on a lint-free rag to clean. Apply oil or suitable thread lubricant to head
bolt threads and the underside of bolt heads and washers to prevent
galling and improper torque readings. Apply liquid Teflon PST or other
suitable thread sealant on any bolt threads that go into coolant passages.
Torque 1/2" bolts or stud nuts to 100-110 ft./lbs. in three step
increments, following the tightening sequence shown in Figure 1. A re-
torque is recommended after the initial star-up and cool-down (allow 2-
3 hours for adequate cooling).
Other Assembly Tips: When installing the sparkplugs and exhaust
manifolds, be sure to use a high temperature anti-seize compound on the
threads to reduce the possibility of thread damage in the future. Do not
exceed a torque of 25 ft./lbs. on the intake manifold bolts and lubricate
the bolt threads prior to assembly.
NOTE: Torque sparkplugs to 10 ft./lbs. Do not over tighten
sparkplugs! If short reach plug is used, poor performance and
possible engine damage may occur.
Page 2 of 3
INSTALLATION PROCEDURE
©2008 Edelbrock Corporation
Edelbrock Cast
Brochure #63-770769
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