What year Corvette has Optispark?

Optical trigger. 92-94 is Optispark 1 EFI. 95-97 is Optispark 2. Year options – 1995-1997 LT1/LT4 350 V8 or 1992-1994 LT1 350 V8.

How does Opti spark work?

How does it work? The optical section consists of a disk with 360 slots in it, representing 360 degrees of crank rotation. A small laser/eye unit throws a beam through the disks and reads the pulses created as the slots pass through the beam. In this way, the PCM knows the precise location of the crank at all times.

What is the best OptiSpark replacement?

10 Best LT1 Optispark Replacement Comparison Table 2021 (Updated)

Where is the Opti located on a LT1 engine?

The GM Optispark is an optically-triggered ignition distributor used on the LT1, LT4 and L99 engines. The “opti” has two parts, a low-voltage optical section and a high-voltage cap and rotor section. Where is it? The opti is mounted on the front of the LT1, above the crank snout and behind the water pump.

What’s the difference between a Corvette LT1 and LT4?

Also, the water pump is cam-driven, rather than belt driven. In 1996, an LT4 was available in the Corvette. The LT4 had the same features as the LT1, but had larger valves, larger intake ports that were located higher, and an intake to match. The LT4 also came with a more aggressive cam to enhance the better heads.

When did the Corvette LT4 cylinder head come out?

In 1996, an LT4 was available in the Corvette. The LT4 had the same features as the LT1, but had larger valves, larger intake ports that were located higher, and an intake to match. The LT4 also came with a more aggressive cam to enhance the better heads.

What is the Opti Spark distributor on a corvette?

This new Opti-Spark distributor was supposed to be the greatest thing since GM did away with ignition points. Instead there was an internal mistake and the Opti-Spark caused Corvette owners a tremendous amount of aggravation. One of the goals was to control spark scatter during transient maneuvers, such as acceleration.