Impala While undergoing many facelifts in its history, the Impala has proved itself to both civilians and police forces as one of the most capable 4-door cars GM has ever offered. Currently moving towards its 10th generation the Impala is one of the longest lasting and popular models.

2014 Chevrolet Impala
Includes: Bel-air
Platform: B-body & W-body

LT1 question, opti-spark good?

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Old November 13th, 2018, 12:49 PM
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Default LT1 question, opti-spark good?

Hey guys I'm new to the forum. I have a 1994 355 LT1, I bought the car years ago and it's been sitting ever since now I'm bringing it to life!

Is the LT1 engine reliable? Should I replace the Opti-spark? I was researching and some people said it's very unreliable and some say it's been improved. Should I keep The LT1 engine or should I engine swap to the 6.0 LS engine for more of a reliable setup? Thanks!




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