engine vacuum
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1st Gear
Joined: Jun 2010
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engine vacuum
I'm looking for a vacuum diagram for under the hood of my wife's "77". How the breather,PCV valve,EFE,EGR,and other componets are connected. My Corvette Central Corvette assembly instruction manual has alot of pages stamped (waiting layout approval) and some stamped (canceled). I also have a Haynes Repair Manual. When I try to extrapolate them and pictures from catalogs it gets quite confusing. Please some one help me. Thanks Ron 17265
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Joined: Feb 2004
Posts: 1,771
Likes: 37
From: Sawyer MI
Hi Ron -
From the 1977 Factory Assembly manual:
Section, Sheet(s) Diagram
B01-B12, 44 Washer, windshield
B01-B12, 59-63.5 HVAC
5G, 2 power brake vacuum
6H, 1 PCV
6L, 3, 4, 5 Vacuum tap, EGR and controls
6M, 2 Choke
6M, 4 Air cleaner heat stove, vacuum source
6N, 5 Cruise control
6T, 2 A.I.R. Divertor valve
8B, 1 fuel vapor return to tank
8D, 1, 2 fuel vapor recovery canister
8D, 3 Vapor recovery lines to tank
12C, 7, 8, 9 Headlight vacuum
Of these pages, 3 are “awaiting layout approval” and one is “cancelled”
Hope this helps.
From the 1977 Factory Assembly manual:
Section, Sheet(s) Diagram
B01-B12, 44 Washer, windshield
B01-B12, 59-63.5 HVAC
5G, 2 power brake vacuum
6H, 1 PCV
6L, 3, 4, 5 Vacuum tap, EGR and controls
6M, 2 Choke
6M, 4 Air cleaner heat stove, vacuum source
6N, 5 Cruise control
6T, 2 A.I.R. Divertor valve
8B, 1 fuel vapor return to tank
8D, 1, 2 fuel vapor recovery canister
8D, 3 Vapor recovery lines to tank
12C, 7, 8, 9 Headlight vacuum
Of these pages, 3 are “awaiting layout approval” and one is “cancelled”
Hope this helps.
Le Mans Master
Joined: Mar 2001
Posts: 6,640
Likes: 287
From: Ann Arbor Michigan
