Does a LT1 have a distributor?
LT1 owners have dealt with the Opti-Spark distributor for 11 years now, but there is still much confusion regarding the causes and symptoms of a failing unit.
How long does it take to change an Optispark?
If you just do the water pump and the opti-spark distributor, then it is about 4 hours.
How do I check my Optispark LT1?
to diagnose it. Check to see if you have a signal from the PCM to the ICM on the white wire. While someone cranks it over, check the white wire to ground for 1-4 volts on the AC scale. If that’s there, the problem is between the ICM and the coil.
Can you install Optispark wrong?
Registered. You can install it wrong. Also put in brand new spark plugs!
How much horsepower can you get out of a LT1?
In contrast, the 376-cubic-inch (6.2L) LT1 offered in the 2016 Corvette Stingray is rated at 460 horsepower with the optional exhaust system….Katech Street Attack 427 LT1: Channeling the LS7 to make big naturally aspirated power.
| Dyno Chart | ||
|---|---|---|
| RPM | Torque | Horsepower |
| 6,412 | 571 | 696 |
| 6,606 | 558 | 700 |
| 6,806 | 543 | 701 |
How does a lt1 water pump work?
Coolant flows from the lower radiator hose into the water pump at the thermostat through the heads on the way to the block. The reverse flow pump acts as a vacuum pump in drawing the water out of the block. It then passes the thermostat and returns it to the radiator via the upper hose.
What years did Corvette use 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.
Does LT4 have OptiSpark?
GM’s OptiSpark is an optically triggered ignition distributor used on the LT1, LT4, and L99 (4.3L V-6) engines. It is mounted on the front of the engine, above the crank snout and behind the water pump.
Is a LT1 a big block?
But like that very first 265ci small-block, the new LT1 is still a 16-valve, cam-in-block, 90-degree V-8 engine. One of the most technologically advanced engines in the world, the LT1 also represents the most significant redesign of the small-block ever.