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  1. LT1 | LT4 | L99 Engine Tech
    Hey guys I have a 95 Firebird and have been chasing an issue with half to full throttle hesitation and loss of power. It mainly occurs from 1000-3000 rpm when accelerating with about 40% or more throttle. I have checked the fuel pressure, ran codes, replaced the optispark twice, and replaced the...
  2. LT1 | LT4 | L99 Engine Tech
    I have a 94 LT1 out of a chevy caprice interceptor with a painless harness installed. I pulled the engine and put it into a rat rod project I've been working on. While the engine was out I replaced the spark plugs, wires, coil, icm, optispark, and the fuel injectors. The air pump was also...
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