1970 Carb Set Up Info.....

[LostnFound]

Set Up Info for 1970 Carbs that I found on the net.

 

1970 Carburetor Initial Adjustments

 

Adjust with the air cleaner installed.

 

Disconnect the fuel tank line from the vapor canister (EEC).

 

Connect a tachometer to the engine, start the engine and allow it to reach operating temperature. Make sure the choke and preheater valves are fully open.

 

Turn off the air conditioner and set the parking brake. Disconnect and plug the distributor vacuum line.

 

Make the following adjustments:

 

 

 

V8-350 (250 HP) ENGINE

 

Turn in the mixture screws until they gently seat, then back them out four turns.

 

Adjust the solenoid screw to obtain 830 rpm for manual transmissions (in Neutral), or 630 rpm for automatic transmissions (in Drive).

 

Adjust both mixture screw equally inward to obtain 750 rpm for manual transmissions or 600 rpm for automatics (in Drive).

 

Disconnect the solenoid wire, set the carburetor idle screw to obtain 450 rpm, and reconnect the solenoid.

 

Reconnect the distributor vacuum line.

 

V8-350 (300 HP) & 402 (330 HP) ENGINES

 

Turn in both mixture screws until they gently seat, then back them out four turns.

 

Adjust the carburetor idle screw to obtain 775 rpm for manual transmission, 630 rpm for automatics (in Drive).

 

Adjust the mixture screw equally to obtain 700 rpm for manual transmission, 600 rpm for automatics (in Drive).

 

Reconnect the distributor vacuum line.

 

V8-402 (350 HP) & 454 ENGINES

 

Turn in both mixture screws until they gently seat, then back them out four turns.

 

Adjust the carburetor idle screw to obtain 700 rpm for manual transmission or 630 rpm for automatics (in Drive).

 

For cars with automatic transmission: adjust the mixture screws equally to obtain 600 rpm with the transmission in Drive.

 

For cars with manual transmissions: Turn in one mixture screw until the speed drops to 400 rpm, then adjust the carburetor idle screw to obtain 700 rpm. Turn in the other mixture screw until the speed drops 400 rpm, then regain 700 rpm by adjusting the carburetor idle screw.

 

Reconnect the distributor vacuum line.