LT1-LT4 Modifications 1993-97 Gen II Small Block V8

now its missing

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Old 04-30-2007, 10:17 PM
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well everything was done from installing the headers and now its missing only under load.

opti is still good and its fairly new. plug wires are 8 months old, plugs are brand new.

i checked all boots and they are on tight. only thing i can think of is either a crack in one of the plugs i forgot to take out during header install or a wire.
one of my wires (cylinder #3) is rubbing against the steering shaft, and it has no slack so its as far as it can go. plus the boot for it with the metal heat shield is up against a primary. i may just get a set of OVC wires.
Old 04-30-2007, 10:25 PM
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yeah its a bad plug or wire
Old 04-30-2007, 11:02 PM
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mine did the same thing and it ended up being the coil
Old 04-30-2007, 11:11 PM
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man i love LT1's ignition systems
Old 04-30-2007, 11:17 PM
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just recently had simalar problem.changed the coil wire that looked good.stopped the miss under load funny thing is it reved great in neutral.thease f-n ignitions are to damn picky.
Old 04-30-2007, 11:21 PM
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i ordered the OTVC set from thunderracing.

i bet this is what causes my idle backfiring too. or its cause i have no cat



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