Sneak Peek from LPE

[XfireZ51]

Graham,

Undoubtedly the LS series was under development as the Gen 2 LT-5 was. Did u know about the CnP ignition for the LS and were u planning on using
it? Is the idea of adapting COP or CnP to our LT-5s worth it performance wise in your opinion?

[Scott Clark]

While we wait for Graham's reply, my thoughts on the ignition based on experience are: No, CNP wouldnt be a performance improvement, only a possible reliability improvement, although CNP run sequentially would reduce energy drawn from the charging system as it fires half as frequently as the wasted spark system on the cars now.


if I were asked to make ignition system improvements, my first move would be to install a higher toothcount reluctor wheel on the crankshaft. Because more frequent updates to an ECU allows more precise placement of spark events.

[-=Jeff=-]

Yes.. That would be the better option.. I would consider that in my car

[XfireZ51]

Originally Posted by -=Jeff=-

Yes.. That would be the better option.. I would consider that in my car

That would require something other than the stock ICM. Unfortunately the ECM has nothing to do with firing the coils, just timing.
Reliability doesn't sound like THE critical factor requiring a new ignition system.
Something tells me other factors played into the need for a CnP type system. Look forward to Graham's perspective if he cares to chime in.

[grahambehan]

LT5 prototypes were made using the Northstar ignition set up and that would have been the path if the engine had gone further. I agree with Scott's statements re performance.

It was great working with Scott on the engine and I can't thank the guy's at DIY autotune enough for stepping up and helping us with this project. Now let's work on something that benefits the ZR-1 community!

Graham.

[XfireZ51]

Graham,

Thanks for your perspective and very much appreciate your contributions.

[tf95ZR1]

Hey, we were the first to find out, now the rest of the
world knows:

http://www.corvetteonline.com/chevy-...s-alive-again/

[-=Jeff=-]

Originally Posted by tf95ZR1

Hey, we were the first to find out, now the rest of the
world knows:

http://www.corvetteonline.com/chevy-...s-alive-again/

It has been all over the web since last week

[tf95ZR1]

Yes, on youtube May 15, 2015 the same day as Graham's presentation at BG.
Then,
An EngineLabs Exclusive: The Gen III LT5 That Never Was, Alive Again
posted on May 18, 2015 in Chevy - Small Block, Engine Library

[FU]

Thanks for posting that link Ted