I've read tests that showed that quality OEM coils put out as much spark energy as the aftermarket "performance coils". I'd just go genuine AC Delco.
------------------ " THE BLACK PARALYZER" -87GT 3800SC Series III engine, custom ZZP /Frozen Boost Intercooler setup, 3.4" Pulley, Northstar TB, LS1 MAF, 3" Spintech/Hedman Exhaust, P-log Manifold, Autolite 104's, MSD wires, Custom CAI, 4T65eHD w. custom axles, Champion Radiator, S10 Brake Booster, HP Tuners VCM Suite. "THE COLUSSUS" 87GT - ALL OUT 3.4L Turbocharged engine, Garrett Hybrid Turbo, MSD ign., modified TH125H " ON THE LOOSE WITHOUT THE JUICE "
Originally posted by Dennis LaGrua: I've read tests that showed that quality OEM coils put out as much spark energy as the aftermarket "performance coils".
At some point you need more metal/copper to store more energy in the ignition coil.
Within the confines of the stock form factor, the aftermarket is going to be limited in what they can do.
I have an MSD coil but moved it to the trunk wall....Dropped the temp from 160 to 120 (I also made an extra heat shield to block the heat of the cross-over pipe) Have had this since 2012....No trouble.
[This message has been edited by cvxjet (edited 04-06-2021).]
for an otherwise stock engine, there's no need to buy anything fancy. once you start packing on boost or high compression/RPM, then it starts to matter a bit more.
------------------ "I am not what you so glibly call to be a civilized man. I have broken with society for reasons which I alone am able to appreciate. I am therefore not subject to it's stupid laws, and I ask you to never allude to them in my presence again."
GM OE HEI is solid to 8000 rpm. AC Delco doesn't make coils for '80's vintage anything, it's all reboxed aftermarket. That said, Standard Motor Products supplies a LOT to AC Delco. https://www.standardbrand.c...n/ecatalog?year=1986
I have an MSD coil but moved it to the trunk wall....Dropped the temp from 160 to 120 (I also made an extra heat shield to block the heat of the cross-over pipe) Have had this since 2012....No trouble.
Can you tell us where you got the ignition coil plugs from? I have been wanting to do this, but I dont know where to get the right lengthed cables.
The coil wire is a MSD part, 18" long....https://www.summitracing.com/parts/msd-84039
Here are some better pics of the coil mount and the heat shield....
Sorry it took a while to load the pics; It requires that I >>PREVIOUSLY<< be logged in...But when I had posted and then went to edit, it stated that I was not logged on.....Tried 3 times....Computers, they will be the DEATH of us all!
[This message has been edited by cvxjet (edited 04-08-2021).]
During my coil search 8yrs ago, I got tired of finding AC, Standard and may others that had loose coil packs. What I was seeing was in new out of the box coil units the coil packs (the copper winding ) were loose in their mounting inside the hoop. In other words, I was able to shake the coil unit and see and hear the winding pack rattle loosely. Go look at a few and you'll see what I mean. Just lousy construction.
I then started a search for a better coil unit. I heard allot of good and bad about the MSD Blaster. After determining the Blaster unit wasn't for me I stumbled upon the MSD Streetfire coil. The MSD Streetfire is basically MSD's stock replacement in a better package. For me the pluses were that the coil pack was tightly encased in a moisture sealed exterior and very well mounted inside the hoop, yes and no more rattling, and that the output of the coil was at or slightly better than OEM coils for the 2.8L. Also it mounts correctly into the stock coil position next to the distributor.
It's been 8yrs. with zero issues using the MDS Streetfire in a stock 2.8L. Below is the one I use.
I have an MSD coil but moved it to the trunk wall....Dropped the temp from 160 to 120 (I also made an extra heat shield to block the heat of the cross-over pipe) Have had this since 2012....No trouble.
Can you tell us where you got the ignition coil plugs from? I have been wanting to do this, but I dont know where to get the right lengthed cables.
85 and later standard Coil pigtails are sold at many "stores" as Dorman parts. 84 and older not available so need to upgrade to 85 plug and coil.
Crimp splices use 3M butt crimps w/ "weather proof" heat shrink cover. many others may look same but often weak parts. Must use a good crimp tool. Not cheap tools sold thru most auto part and other stores made of stamp metal.
Make sure HEI coils iron cores are Grounded. If not then can cause problems and kill ICM or other E-parts.
Many here have problems w/ MSD and Accell. Use search. Any coil claiming Hotter the OE for GM HEI and DIS often have problems. For HEI, hot coils can burn out center of most dist caps and the rotor.
------------------ Dr. Ian Malcolm: Yeah, but your scientists were so preoccupied with whether or not they could, they didn't stop to think if they should. (Jurassic Park)
