Replacing the Optispark with a N* Ignition?
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5.0 and 5.7 Discussion, Replacing the Optispark with a N* Ignition? in Cadillac Engine Technical Discussion; Has anyone looked into doing this? http://www.delteq.com/default.htm I have been wanting to dig into making my own and use the ...
  1. #1
    N0DIH's Avatar
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    Replacing the Optispark with a N* Ignition?

    Has anyone looked into doing this?

    http://www.delteq.com/default.htm

    I have been wanting to dig into making my own and use the N* Ignition Module and coils, looks like Delteq already does it.

    Being I am going to replace my Opti anyway, this might be a more solid solution. Or is it?

    I might have 3 coils from a Buick 3800 ignition module, so I would just have to pickup the module and another coil, and wires, and the Delteq module to convert the Opti sensors to the input on the N* module... Hmmm.....

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    Re: Replacing the Optispark with a N* Ignition?

    Wow, never seen that one before. So you keep the stock Opti and just add that on "to make it a better system"?

    Sounds like a good idea, at least based on their own info on the site, but I'd want to see what some more real-world users say...like over on the SS board if some of them have used it.

    Then again, for $700, I'll pass...unless you really can come up with a homemade copy. Even then, I'd be tempted just to keep it stock and not tempt fate with the system.

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    N0DIH's Avatar
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    Re: Replacing the Optispark with a N* Ignition?

    Or this one: http://www.gmhightechperformance.com...htp_optispark/, or http://www.lingenfelter.com/store/bai-ltcc.html

    This one uses LS1 coils instead of N* coils. I like this one better.

    I think both of these are much simpler than they will tell you, likely the module they have is simply changing the sensor optical pulses to something the new module needs (crank and cam, it has to know where #1 is).

    Now, to make my own....

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    Re: Replacing the Optispark with a N* Ignition?


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    Re: Replacing the Optispark with a N* Ignition?

    Yeah, at $200 for a new GM optispark complete, which lasts 100K miles (or even 200K) with absolutely no service or tinkering on it, it's hard to justify something new and relatively unproven which is 3 times the cost.....

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    Re: Replacing the Optispark with a N* Ignition?

    Keep it simple and cheaper......it's proven to work soundly for many many miles why tinker with it.

    Unless it will give hp increase or something else for the extra $500.

    Also you don't really need to worry about changing the new opto until your fleetwood hits around 300,000 miles which isn't anytime soon.

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    Re: Replacing the Optispark with a N* Ignition?

    After 14 years of owning a Buick '86 3.8L (B) V-6, I would love to get back to 100% electronics ignition system, but I too am of the opinion these LT1 conversions are just a little too expensive for the avarage setup. I'll be the first in line when they get a little more affordable.

    Thanks for sharing these parts sites.

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    Re: Replacing the Optispark with a N* Ignition?

    Quote Originally Posted by ocjmakaveli
    Keep it simple and cheaper......it's proven to work soundly for many many miles why tinker with it.

    Unless it will give hp increase or something else for the extra $500.

    Also you don't really need to worry about changing the new opto until your fleetwood hits around 300,000 miles which isn't anytime soon.
    That's what I've been wondering. Some have had to do it not long after 100k, but then others are past 300k miles on the original.

    But does this count changing the cap & rotor or no? That seems like a pretty extensive job itself, but I have wondered what the general consensus was.

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    Re: Replacing the Optispark with a N* Ignition?

    C.Cruiser

    I will admit, I haven't done the LT1 Optispark exchange/rebuild, but at the price of a tuneup, I think most of us in these pages could take a stab at the installation.

    Also, there is tons of Lt1 pages on the web, from Corvette to F-body, that describe in detail the Optispark replacement, and even their upgrade if you really want a small challenge.

    I say, go for it. I know I will this summer.

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    Re: Replacing the Optispark with a N* Ignition?

    http://www.charm.net/~mchaney/optisprk/optisprk.htm

    http://www.gmhightechperformance.com...htp_optispark/

    There are a couple of opti sites with some tech info....

    Replacing the opti is not a bad job, just time consuming. The Water pump has to be removed, which means the AIR pump and bracket for it must come off (in order to get WP off).
    Then remove the three bolts for the balancer (remove belt) and it should come off (a puller may be needed, or a small mallet may due). Opti pulls straight out, it has a shaft with two o-rings. Unplug spark plug wires (be sure they get put back on in same order.

    You will lose coolant, so you must replace some of that as well as bleed the coolant system after it is all put back together again.

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    boatman is offline Cadillac Owners Member
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    Re: Replacing the Optispark with a N* Ignition?

    anything but the optispark. Problem is it all comes at a cost.

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    Re: Replacing the Optispark with a N* Ignition?

    Quote Originally Posted by BCs71 View Post
    Yeah, at $200 for a new GM optispark complete, which lasts 100K miles (or even 200K) with absolutely no service or tinkering on it, it's hard to justify something new and relatively unproven which is 3 times the cost.....
    Where'd you find one for $200??? The last one I bought cost me over $400!!!

  14. #13
    N0DIH's Avatar
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    Re: Replacing the Optispark with a N* Ignition?

    Call Dal, he gives great prices on GM parts.... Summit Racing too.

    eBay is a good place too.

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