Filter
Top Products
Part #60959, 60969, 60979, 60989
Rev. 1/09 - AJ/mc Page 2 of 4
©2009 Edelbrock Corporation
Brochure #63-0155
IMPORTANT NOTES: READ BEFORE BEGINNING INSTALLATION!
For a successful installation, Edelbrock E-Tec 170/200 Cylinder Heads
require some components other than original equipment parts. To
complete your installation, you will need the following items:
❑ Head gaskets; Edelbrock # 7310, Fel-Pro #7733 PT-2 or
#17030 Marine Gasket, GM #10105117, or Detroit Gasket
#5565HG (see installation instructions)
❑ Intake manifold gaskets; Edelbrock #7235, GM #12529094; or
Fel-Pro #1255 or equivalent
❑ Exhaust gaskets; Edelbrock #7204, Fel-Pro #1404 for PN 6097,
#1405 for PN 6098, or equivalent
NOTE: Edelbrock Cylinder Head Gasket Set #7367 may
also be used in place of individual gaskets. This set
contains all gaskets necessary for cylinder head
installation, including cylinder head, intake, exhaust, and
valve cover gaskets.
❑ Edelbrock head bolt kit #8550 (see instructions below)
❑ 14mm x 3/4” reach x 5/8” hex, gasketed spark plugs (heat
range to be determined by specific application)
❑ Non-self aligning, roller tip rocker arms such as Crane #11801-
16, Sealed Power #R-865R, Pioneer-Barnes #818001, or
equivalent, or self-aligning rocker arms such as GM
#12495490 (stamped steel, 1.5:1 ratio), GM #12370838
(aluminum roller, 1.5:1 ratio), & GM #12370839 (aluminum
roller 1.6:1 ratio) or equivalent
❑ Hardened Pushrods; .100” longer-than-stock (if using stock
type rocker arms); Cam Dynamics #1002; Competition Cams
#7693-16; Crane #11622-16; Crower #70311-2; Isky #203 HG
+ .100; Pioneer-Barnes #815215, or equivalent (for
conventional hydraulic lifter cams), Competition Cams #7949-
16; Isky #203-HG Minus .460; Lunati #83132; or equivalent (for
hydraulic roller lifter cams)
CHECKING CLEARANCES: Prior to installation, it is highly recommended
that valve-to-piston clearances are checked and corrected to minimum
specs, if necessary. A minimum of 0.100” clearance is recommended for
both intake and exhaust. These cylinder heads have different than stock
valve sizes and may not work with the valve pockets in stock pistons,
especially if a high lift cam is used. The use of aftermarket pistons and/or
custom machining to your pistons may be required. Actual valve-to-
piston clearance should be specified by your camshaft manufacturer. If
these cylinder heads are used on small bore engines, valve-to-bore
clearance should also be checked, and the top of the bore notched for
clearance, if necessary.
ROCKER GEOMETRY: Rocker geometry should be checked, making
sure that the contact point of the roller (or pad on a stock rocker arm)
remains properly on the valve tip and does not roll off the edge. Visual
inspection of the rockers, valve springs, retainers, and pushrods should
be made to ensure that none of these components come into improper
contact with each other. If problems with valve train geometry occur,
changes such as pushrod length may have to be made.
BEFORE BEGINNING INSTALLATION
ACCESSORIES
Although Edelbrock E-Tec cylinder heads will accept OEM components (rocker arms, valve covers, intake manifold, head bolts, etc.), we highly
recommend that premium quality hardware be used with your new heads.
• Head Bolts or Studs: High quality head studs or head bolts with
hardened washers must be used to prevent galling of the aluminum
bolt bosses. Edelbrock head bolt kit #8550 includes all bolts which
must be used with these cylinder heads. Stock head bolts may be
used if they meet these specs for length: 1-3/4” (short bolts); 3”
(medium bolts); 3- 13/16” (long bolts). Bolts not meeting these
specs do not have enough thread engagement for use with
hardened washers. The recommended hardened washers are GM
#10051155, ARP #200-8511, or equivalent. Bolt threads, underside
of bolt heads, and washers should be lubricated with an oil/moly mix
prior to installation and torquing. Use thread sealant on any bolts
that go into coolant passages.
• Rocker Arms and Valve Train: Stock (stamped type) rockers will
require +.100” longer-than-stock hardened pushrods to maintain
proper geometry. The valve springs supplied will accommodate
valve lifts up to .600”, which is much higher than stock rocker arms
will allow. Long slot stamped or roller rocker arms will be required
if your camshaft has more than .480” lift.
CAUTION: Some Chevrolet V8 cylinder heads, including Vortec
heads, are factory-equipped with “self-aligning” rocker arms.
These rocker arms have a stamped recess on the valve tip end
to guide the rocker arm on the valve stem which allows the
rocker arm to guide the pushrod. Edelbrock E-Tec cylinder
heads are equipped with both hardened pushrod guideplates
and hardened washers to be used with “self-aligning” rocker
arms. In any case, always check rocker-to-valve tip alignment
and adjust as needed.
• Valve Covers: E-Tec heads will accept standard perimeter bolt and
centerbolt valve covers. The Perimeter bolt pattern is not in stock
location. Check accessory bracket fit before using perimeter bolt
style valve covers with these heads. Edelbrock perimeter pattern
#4449, 4248, or 4244 or centerbolt pattern #4246 and 4247 will
work with E-Tec heads.
NOTE: Most taller than stock valve covers will interfere with
the EGR valve and are not legal on emission-controlled
vehicles. Perimeter bolt pattern valve covers MUST use the
four (4) supplied rubber washers between the valve cover and
any metal washers being used, as well as a bit of RTV silicone
sealer between the valve cover bolt heads, and their
corresponding metal washers, in order to prevent oil leaks.