Edelbrock 66112 user manual

Summary of the content on the page No. 1

TUBULAR EXHAUST SYSTEM
For 1987-1989 Chevrolet & GMC; Crewcab 3500 Series, 2 WD,
7.4L V8, Automatic Transmission, with A.I.R.
Catalog #66112, #66113
INSTALLATION INSTRUCTIONS
Please study these instructions carefully before installing your new Tubular Exhaust System (TES). If you have any
questions, please contact our Technical Hotline at : 1-800-416-8628 from 7 am - 5pm, Monday-Friday, Pacific
Standard Time or e-mail us at Edelbrock@Edelbrock.com. Please fill out and mail your warranty card.
T

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INSTALLATION INSTRUCTIONS 7. Remove bolts and exhaust manifold. • DISASSEMBLY - RIGHT SIDE 8. Clean exhaust flange surfaces on cylinder heads at 1. Disconnect negative cable from battery. this time. 2. Use penetrating oil on all nuts and bolts to be removed. This will prevent the possibility of broken � DISASSEMBLY - CROSSOVER PIPE or stripped nuts and bolts. 1. Raise vehicle and support with jackstands. 3. Remove air cleaner system (note position of line and 2. Remove O2 sensor, being careful n

Summary of the content on the page No. 3

7. Re-install knock detector and wire. 8. Re-install spark plugs and connect wires. � CROSSOVER PIPE ASSEMBLY NOTE: Some vehicles will require that new plug wire 1. Slip new Edelbrock T.E.S. adapter into catalytic terminals and boots (supplied) are installed on converter. cylinders #4, 6, and 8. 2. Install crossover pipe and Y-pipe assembly on vehicle 9. Remove A.I.R. check valves from original manifolds using four 3/8" x 2" bolts with lock washers and and re-install them on T.E.S. Re-connect al