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54 TUNE-UP AND PERFORMANCE MAINTENANCE
conditioner off) or 550 rpm (automatic trans-
mission in Drive with the air conditioner on).
350 and 454 (4-BBL Holley) Engines
1. Adjust the carburetor idle speed screw
(NOT the solenoid plunger) to obtain 700 rpm
(manual transmission in Neutral or automatic
transmission in Drive).
2. Adjust the idle mixture screws alter
nately to obtain the maximum smooth idle
speed.
3. Adjust one of the idle mixture screws to
obtain a 20 rpm drop ("lean roll"), then back
it out %, turn.
4. Repeat Step 4 above for the other idle
mixture screw.
5.
Readjust the carburetor idle speed screw
to obtain 700 rpm if necessary.
454 (4-BBL Quadrajet) Engines
Turn the air conditioner off. Adjust the car-
buretor idle speed screw (NOT the solenoid
plunger) to obtain 600 rpm (manual transmis-
sion in Neutral or automatic transmission in
Drive).
1972
NOTE:
All carburetors are equipped with
idle limiter caps and idle mixture is preset
at the factory and should not require ad-
justment.
1. Remove the fuel filler cap but do not
remove the vapor line.
2. Detach the distributor vacuum hose and
plug the hose.
3. Set the parking brake and turn the air
conditioner (if so equipped) off. On cars
equipped with an automatic transmission,
check the wheels.
4. Allow the engine to reach normal oper
ating temperature. Be sure that the choke is
open.
5. If the car has an automatic transmis
sion, set the selector in Drive. If the car has
a manual transmission keep die transmission
in Neutral.
6. Adjust the anti-dieseling solenoid to the
higher
of the two rpm figures given in the
specifications.
CAUTION:
Do not turn the solenoid more
than one complete turn unless the electrical
lead is disconnected (solenoid deener-
gized).
7. Disconnect the solenoid lead and set the
idle speed to the
lower
of the two figures given
in the specifications. Use the normal idle
speed adjusting screw.
NOTE:
If no lower figure is given, adjust
the idle to 450 rpm.
8. Reconnect all of the wires and hoses
which were disconnected in order to perform
these adjustments.
1973
Ah
1
models are equipped with idle limiter caps
and idle solenoids. Disconnect the fuel tank
line from die evaporative canister. The en-
gine must be running at operating tempera-
ture, choke off, parking brake on, and rear
wheels blocked. Disconnect the distributor
vacuum hose and plug it. After adjustment,
reconnect the vacuum and evaporative hoses.
Four-barrel 350 and 454 cu in. V8s
1. Adjust the idle stop solenoid screw for
900 rpm on manual, 600 rpm on automatic.
2. Connect the distributor vacuum hose
and position the fast idle cam follower on the
top step of the fast idle cam (turn air condi
tioning off) and adjust die fast idle to 1300
rpm on manual transmission 350 engines;
1600 on manual 454 engines and all automat
ics (in Park).
Optional 350 cu in. (L82) V8
1. Adjust the idle stop solenoid screw (air
conditioning off) for a speed of 900 rpm on
manual transmission; 700 rpm on automatic
(in Drive).
2. Connect the distributor vacuum hose
and position the fast idle cam follower on the
top step of the cam (turn air conditioning off)
and adjust the fast idle to 1300 rpm on man
ual; 1600 rpm on automatic.
1974
The same preconditions as for 1973 apply.
Four-barrel 350 cu in. V8
1. Turn the air conditioning off. Adjust the
idle stop solenoid screw for 900 rpm on man
ual transmission models; 600 rpm on auto
matic (in Drive).
2. Connect the distributor vacuum hose.
Position the fast idle cam follower on the top
step of the fast idle cam and adjust the fast
idle speed to 1300 rpm on manual; 1600 on
automatic (in Park).
Optional 350 cu in. (L82) V8
1. Turn the air conditioning off. Adjust the
idle stop solenoid for 900 rpm on manual; 700
rpm on automatic (in Drive).
2. Connect the distributor vacuum hose.
Содержание 1963 Corvette
Страница 29: ...3 0 1973 3 0 15 18 Is 454 8 18 24 15 4 0...
Страница 36: ...GENERAL INFORMATION AND MAINTENANCE 31 CM E 8 in 1 o s 1 O 1 8 o o o o CD o o o CO E o o o co JD in fCD I ts...
Страница 83: ...OHMMETER OHMMETER Stator testing perforated case models...
Страница 125: ...Wear ridge must be removed before piston removal...
Страница 161: ...14 Vacuum piston 15 Vacuum piston spring 16 Pump plunger assembly 17 Pump plunger return spring 18 Primary float...
Страница 205: ...EMISSION CONTROLS AND FUEL SYSTEM 187 8 CO 8 8 8 8 inCM CO 8 CM I I I IS N ino 1...