Brodix 5 Inch Bore Spacing Head - Manual

ATTENTION:
VALVE SPRING WARNING FOR ALL PACKAGES
On all complete packages, it is very possible that your valve springs are not correct for your
camshaft. All valve springs should be checked for compatibility to your camshaft. Severe wear
of valve train components and severe engine damage could result from failure to do this. Check
spring requirements before heads are installed on the engine. BRODIX requires you to supply the
valve springs for any engine that has a fl at tappet camshaft with over .615 valve lift.
WARRANTY DISCLAIMER:
No warranties of any nature (expressed, implied, fi tness of usage or merchantability) are given on
these products. Seller undertakes no responsibility for any product sold. Additional disclaimers
are within and are binding upon this contract. Due to the intended usage of products offered,
all products are sold on an “as-is” basis, and no warranties of any kind, whether written or
oral are made by BRODIX, Inc., its agents or employees. All implied warranties, including the
implied warranties of merchantability and fi tness are expressly excluded, and the buyer bears
the entire risk as to quality performance and use of these products. BRODIX, Inc. will assume no
responsibility of personal injury, labor or other injury arising out of the usage of high performance
racing parts or products. Any defective part will be handled between the original manufacturer
and the buyer.
BRODIX, Inc. reserves the right to change specifi cations, prices and discontinue parts without
notice. Installation of BRODIX heads may adversely affect the vehicle manufacturer’s warranties,
and may violate State and Federal laws when vehicles so equipped are operated other than
strictly off-highway. BRODIX reserves the right to discontinue any product at its sole discretion
and without any liability with respect to similar products already in the fi eld. Some parts are not
legal for sale or use on pollution controlled motor vehicles.
DUE TO THE POTENTIAL FOR ABUSE AND OVERLOADING WITH A SUPERCHARGER, WE
DO NOT RECOMMEND OUR PRODUCTS FOR SUPERCHARGED APPLICATIONS.
WARNING!
PLEASE CHECK THE HEAD THOROUGHLY
IN EVERY POSSIBLE WAY. IF YOU SUSPECT
A DEFECT, CONTACT BRODIX, INC. OR THE
DEALER IT WAS PURCHASED FROM BEFORE
ANY WORK HAS BEGUN. BRODIX WILL NOT
BE RESPONSIBLE FOR DEFECTS AFTER ANY
WORK HAS BEEN STARTED.
Inspect the head for damage from shipping, and
check valve stems for nicks by mishandling.
VALVE SPRINGS MAY NOT BE COMPATIBLE
WITH YOUR CAMSHAFT COMBINATION.
PLEASE CHECK BEFORE ENGINE ASSEMBLY.
SEVERE DAMAGE COULD OCCUR.
* Check valve to piston clearance.
* Check piston to cylinder head clearance.
Always check valve guide clearance when heads are
purchased bare. When buying the heads complete,
this is performed at BRODIX. A good cross hatch
pattern is desirable for initial oil retention.
Valve stems should be lubricated before
installation in valve guides. Recommended
valve clearance is .0016 for intake and .0016 for
exhaust.
Most bronze valve guide wear problems are created
in the initial preparation and engine warm up. Bronze
guides cannot run dry for any amount of time.
If a valve stem seal is used, the neoprene-tefl on
insert type is desirable. We do not recommend a
tight seal.
Do not cut spring pockets any larger or
deeper than standard size before consulting
with a BRODIX technician.
Use Loc-Tite “271” sealant on rocker stud
threads. Torque to 40-45 ft-lb.
Fel-Pro or Cometic head gaskets are
recommended. Always check for gasket
overlap into chambers. New type o-ring
gaskets may imprint heads. In most cases,
they are acceptable.
Torque head bolts to 70 ft-lb in increments of
20 ft-lb. Use a drop of 30W motor oil under head
of bolt. Make sure head bolts do not bottom out
in block. Sealer should be used on head bolt
threads.
A re-torque after initial warm up is desired. Allow
engine to cool for twelve hours before re-torquing.
Check pushrod clearance with head installed
on the engine block before fi nal assembly.
Apply anti-seize on all bolts and spark plug
threads.
Alcohol cars can start with NGK-R 5671 A-9 or
Autolite AR 51, Gasoline (racing fuel) cars can
start with NGK-R 5671 A-8 or Autolite AR 52.
Gasoline (pump gas) cars can start with NGK-R
5671 A-7 or Autolite AR 3924. This is only a
recommended starting range. You may discover
that a colder or hotter plug will work better with
your combination. Plugs must be 14mm, .750
reach. Put large fl at side of spark plug gasket
next to head.
Always remember big block heads have a
water passage under the intake short side.
WARNING! Please be advised that heat soaking
aluminum heads above 250° F can drastically
affect the hardness.
Cleaning techniques that utilize heat are not
recommended.
Please feel free to call, write, or email (tech@
brodix.com) if there are any problems or
questions. We have a complete repair service
available if head damage occurs. We also stock
oversize guides and seats.
301 Maple Ave. • P.O. Box 1347
Mena, AR • 71953
(479) 394-1075 • Fax: (479) 394-1996
www.brodix.com
© Copyright 2014 Brodix, Inc.
301 Maple Ave. • P.O. Box 1347
Mena, AR • 71953
(479) 394-1075 • Fax: (479) 394-1996
www.brodix.com
General Instructions for PB Series
Big Block Chevy Compatible Heads
Revised 2/5/14 PARTS RECOMMENDATIONS INSIDE