How to Replace the Ignition Coil on a Lt1by Leonardo R. Grabkowski
The LT1 was a high-performance edition of the GM 350 engine. The LT1 was used in the Chevrolet Camaro, Pontiac Firebird and Chevrolet Corvette from 1992 to 1997. The LT1 was replaced by the higher-output LS1 engine in 1997. Replacing ignition coils on an LT1 engine will be the same for all vehicles equipped with this engine.
Park the vehicle in a safe location and turn the engine off. Disconnect the negative battery cable to prevent electrical shock.
Locate the ignition coil you need to replace. On LT1 engines, the ignition coils are at the front part of the engine bay, directly in front of the valve covers.
Disconnect the four-terminal connection from the ignition coil setup. Label the ignition coil wires for their location and disconnect the wires.
Remove the retainer screw and the mounting bolt from the old ignition coil to detach the coil from the engine.
Prepare the new ignition coil module with the silicone grease. Dab a small amount on the mounting face of the coil and on the bracket where it will be attached.
Attach the new ignition coil assembly and tighten the bolt to 18 foot-pounds with the torque wrench. Tighten the screw mounting the ignition coil assembly.
Reattach the wires in their proper position, then reattach the four-terminal connection. Reconnect the negative battery cable.
- Don't confuse the LT1 engine with the "LT-1" engine built during the 1970s. The two engines have almost nothing in common.
- Replacing ignition coils is not suited for amateurs.
Items you will need
- Socket wrench set
- Torque wrench
- Replacement ignition coil
- Silicone grease