How do I find TDC on a SBC 350?

Continue to turn the crankshaft slowly until the 0 line on the balancer is aligned with the 0 pointer on the timing chain cover. The distributor rotor should also be pointing to the number 1 cylinder, which is the driver’s front left side. This is TDC or top dead center for all practical purposes.

How does the timing work on a 1989 Corvette?

Setting the ignition timing in the 1989 Corvette is similar to other GM V-8 engines. The Tuned Port Injection system and on-board computer controls will change the timing advance during engine operation according to engine load. However, accurate timing control relies on an accurate base timing adjustment.

How do you set the timing on a 350 engine?

Aim the timing light toward the timing tab and crankshaft pulley. If the two marks are out of alignment, slowly rotate the distributor until the marks line up. Shut off the engine. Tighten the locknut on the distributor clamp at the base of the distributor. Turn on the engine.

How do you set spark timing on a corvette?

Apply the parking brake and place wheel chocks in front of the front wheels. Start the engine, and run it at idle until the engine warms and normal idle speed is reached. Turn off the engine. Disconnect the Electronic Spark Timing (EST) connector located on the wiring harness.

What’s the best timing for a small block Chevy?

Small block Chevys (and most other GM performance V8 engines) perform best when the total timing (full centrifugal advance plus the initial timing setting with vacuum advance disconnected) is all in by 2,500 Π2,800 rpm and is set to 36 Π38 degrees. If you have an adjustable timing light, this is very easy to check.

Setting the ignition timing in the 1989 Corvette is similar to other GM V-8 engines. The Tuned Port Injection system and on-board computer controls will change the timing advance during engine operation according to engine load. However, accurate timing control relies on an accurate base timing adjustment.

What should the timing be on a Chevy 350?

Set the mechanical timing of the engine. Loosen the distributor hold-down bolt. Turn the distributor and use the timing light to set the timing to the vehicle manufacturer’s specifications. Remove the vacuum advance hose at the carburetor.

Apply the parking brake and place wheel chocks in front of the front wheels. Start the engine, and run it at idle until the engine warms and normal idle speed is reached. Turn off the engine. Disconnect the Electronic Spark Timing (EST) connector located on the wiring harness.

What should the timing be on a Chevy 454?

The initial timing should be 4 degrees before top dead center (BTDC). If the mark is adjacent to a higher number BTDC, the distributor must be rotated clockwise to bring it down to 4 degrees. If the number is lower or after top dead center (ATDC), turn the distributor counterclockwise.