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Catalog #68722, 68723
©2006 Edelbrock Corporation
Page 3 of 3
Brochure #63-68722
Rev. 6/06 - DA/mc
Edelbrock Corporation, 2700 California St., Torrance, CA 90503
Tech Line: 1-800-416-8628
E-Mail: Edelbrock@Edelbrock.com
Small Umpco Clamp
10-32 Capscrew, Nut, and Washer
Large Umpco Clamp
.720” Spacer
Fig. 3
Right Side
Fig. 2
Left Side
1.125” Spacer
1.530” Spacers
• CROSSOVER PIPE ASSEMBLY
1. Assemble both lower pipes with catalytic converter, adapter
and clamp (1985 only). Do not clamp tight at this point.
2. Install crossover pipe assembly on vehicle with four 3/8” bolts
(lock and flat washers and gaskets supplied). Do not tighten at
this time.
3. Form A.I.R. injection tube to catalytic converter. Align and
tighten all bolts and clamps.
• LOWER VEHICLE TO THE GROUND
1. Connect negative cable to battery. At this point, it would be a
good idea to look everything over and make sure nothing is
missed in assembly.
2. Start vehicle and bring up to normal operating temperature and
check for possible leaks.
3. Turn engine off and let cool. Then tighten all bolts again.