Delco Ignition
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From: Orlando, Florida
D1977A is the Delco ignition module for the 3800. It and the Magnavox fit one harness. The D1946A et al are for the single ring crank sensor and the harness has a different keying (reversed).
A 1993 parts book lists a Delco ignition module for 86 3.8-B 10456478, in 87 both a Delco 10456478 and a Magnavox 25526449 for 3.8-3, In 88-90 a Magnavox for the 3.8-C 25533540, and a 91-up Delco 10469470 for the 3.8-L so we can assume that the first are for the single ring crank and the second for the double.
A 1993 parts book lists a Delco ignition module for 86 3.8-B 10456478, in 87 both a Delco 10456478 and a Magnavox 25526449 for 3.8-3, In 88-90 a Magnavox for the 3.8-C 25533540, and a 91-up Delco 10469470 for the 3.8-L so we can assume that the first are for the single ring crank and the second for the double.
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From: Jenison, MI (Near Grand Rapids)
Originally Posted by alec_b, earlier in this same thread
...First, mine has the coil (one unit not 3 individual ones) mounted behind the intake on a stand or something, not ahead of the alternator. ...
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From: Winnipeg, Manitoba, Canada
Well, some &%*$ *%$^& sniped my *%(#@$ bid with 2 seconds remaining. Looks the hunt will continue 
edit: This should work alright for me I think... http://cgi.ebay.com/ebaymotors/ws/eB...RK%3AMEWA%3AIT
edit: This should work alright for me I think... http://cgi.ebay.com/ebaymotors/ws/eB...RK%3AMEWA%3AIT
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From: Jenison, MI (Near Grand Rapids)
Well, the coils and module will work fine, the bracket will not.
Still, looks like a good set, with low miles on it. You'd just have to find a metal plate/bracket elsewhere.
Still, looks like a good set, with low miles on it. You'd just have to find a metal plate/bracket elsewhere.
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From: Nanaimo BC
okay... I'm not going anywhere near the 3800 into cause it'* been beaten too death
now.. on the 3.8'*... the LG3 uses the identical ignition to the 86/87 RWD 3.8 weither turbo OR n/A ...it'* a magnaVox.. in the turbo 3.8 "arena'*" very little is known about the type2 for the 3.8 .. from what I've been able to find .. the type2 delco for the 3.8 was a "stage 2" buick ignition
as for the type2 listed for the LG3 ...out there somewhere for maybe a year of it'* short run life.. the LeSabre T-type was offered with a Type2 stock...I've never seen anywhere online of a LG3 with a stock Type2 on it ....doesn't mean it doesn't exist somewhere though
JR3800 gave me a list of the ICM'* of the Type2 variety that swap over to the LG3 ...the only one I can remeber is the Vin N Grand Am... a 3.0 L I think from early early 90'* (I know the grand am year is right cause I found one, I just couldn't afford the parts at the time, but I don't remeber the VIn code exactly)
one thing to remeber even after swapping to the type2 ICM and doing a tuneup on an n/A 3.8 they will ALWAYS have a very very slight vibration or lope at idle that instantly dissapears soon as your off idle
one thing to remeber too on the 3.8 ignition subject... on the 3.8'* (I don't know for sure on the 3800) the MAF also has some control over the timing as well as the A/F[/b]
now.. on the 3.8'*... the LG3 uses the identical ignition to the 86/87 RWD 3.8 weither turbo OR n/A ...it'* a magnaVox.. in the turbo 3.8 "arena'*" very little is known about the type2 for the 3.8 .. from what I've been able to find .. the type2 delco for the 3.8 was a "stage 2" buick ignition
as for the type2 listed for the LG3 ...out there somewhere for maybe a year of it'* short run life.. the LeSabre T-type was offered with a Type2 stock...I've never seen anywhere online of a LG3 with a stock Type2 on it ....doesn't mean it doesn't exist somewhere though
JR3800 gave me a list of the ICM'* of the Type2 variety that swap over to the LG3 ...the only one I can remeber is the Vin N Grand Am... a 3.0 L I think from early early 90'* (I know the grand am year is right cause I found one, I just couldn't afford the parts at the time, but I don't remeber the VIn code exactly)
one thing to remeber even after swapping to the type2 ICM and doing a tuneup on an n/A 3.8 they will ALWAYS have a very very slight vibration or lope at idle that instantly dissapears soon as your off idle
one thing to remeber too on the 3.8 ignition subject... on the 3.8'* (I don't know for sure on the 3800) the MAF also has some control over the timing as well as the A/F[/b]
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From: Jenison, MI (Near Grand Rapids)
I know that I have seen the old LG3 3.8 with the Delco (Type II) ignition at least once, in the local junk yard. I also heard that some of the old GN'* had it. If so, then that should also swap in just fine, based on what you're saying (which makes sense to me).
IIRC, I've seen them on ebay as well, when I was looking for my parts.
It shouldn't be too hard to find parts to do that swap, me thinks.
IIRC, I've seen them on ebay as well, when I was looking for my parts.
It shouldn't be too hard to find parts to do that swap, me thinks.
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UPDATE: My parts are on the way, and will hopefully be here sometime next week. I plan on doing the plugs and wires at the same time. It was pretty warm and moist today and the car wouldn't start AT ALL.
Now, I'm hoping that the overhaul of the ignition system will fix this, but why is it that it starts after it'* been plugged in for an hour or two, in the same conditions? If it were the ignition system, wouldn't plugging the block heater do nothing to improve this?
Now, I'm hoping that the overhaul of the ignition system will fix this, but why is it that it starts after it'* been plugged in for an hour or two, in the same conditions? If it were the ignition system, wouldn't plugging the block heater do nothing to improve this?
