Quote:
Originally Posted by spork2367
The ignition is not a limiting factor on making power within the realm of what is considered standard modifications on an LT5. You are not limited by the ability to modify the ignition outputs.
These engines are not known for weak ignition, or a high rate of coil failure due to heat, or any issues you might alleviate by moving the coil closer to the plug or out in the open.
I think there is a general misconception about what drove OEMs to CoP to begin with. Reliability, fuel efficiency and emissions. Not power.
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I tend to agree with all of this. To be fair, I have not done back-to-back testing to prove it (nor has anybody else). However, I have never found the ignition system lacking or causing a misfire in any of the builds I have done and tested. The two-tower coils seem to have plenty of energy, at least for N/A builds. I am not aware of any ignition related misfires on the few boosted cars out there. I suppose a rich methanol mixture might benefit from higher spark energy, but nobody has a methanol LT5....
Aside from the emissions and diagnostic benefits noted above, the only other compelling reason to go to individual coil ignition is a situation where the engine speed is high enough (and coil dwell long enough) that there is not enough time to fully charge the coils. That isn't remotely a problem for the LT5 coils at the engine speeds we run.
Apologies to the OP for getting this thread slightly off his original topic. Always happy to discuss further in another thread, or this one too.
Todd