Replace Coil Packs w/ Factory Coil Packs?
04-01-2008, 11:27 AM
#1
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Replace Coil Packs w/ Factory Coil Packs? From talking with a few local engine builders, they've suggested since my Trans Am is at 91k miles, that it would be a good idea to replace my coil packs. I've read the threads concerning MSD's aftermarket coil packs and realized that's not a good route. So, do I need to replace the coil packs? Would it just be added insurance? Thanks ahead.
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wannafbody (07-09-2021)
04-01-2008, 11:49 AM
#4
There is absolutely no reason to change them. Stock coils are sufficient for almost any application, and there is no reason to replace them as a part of preventative maintenance at all. You are good as you are.
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04-01-2008, 02:13 PM
#8
Factory ignition system is VERY good, from the coils to wires, to plugs. In 5 years of exposure to these cars, including 3 years of being a Chevy service advisor - I've only seen coil pack failure once on an LS V8 vehicle - and it wasn't the lightning struck vehicle!! Never on an LS1 f-body either. That's literally THOUSANDS of coil packs and only 1 single failure have I personally witnessed. It was also the only one the guys at the dealership could remember.
No need, waste of money.
No need, waste of money.
04-01-2008, 03:15 PM
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I will trade my 14 MSD LS1 coil packs for your 8 factory ones. Eight good and six bad. I went back to my stock LS1 coils and lost no ET in the 1/8 mile this pass weekend. I have actually gone thru 7 MSD coils in about 3 years. Keep your factory coils and no reason to get new ones.
Thanks for the advice again, guys. 
04-04-2008, 12:10 AM
#19
Here is my experience. I was lucky and I got MSD coils for free. They seem to work ok. I kind of wish I had requested something else.
I DO have a problem with slight knock under 2K but I can't prove my MSDs are doing it.
I sold my factory coils after a couple of months. But, ya know I can't prove my car is any worse or better.
Logic would say MSDs are better for boosted applications due to increased current. Increased current means a spark could resist increased pressures of a boasted motor. But, CD ignition isn't for everyone. They are notrious for a short spark. Note the multiple discharge on the side.
Anyways as for the durability of your coil packs... they are basically autotransformers. They don't have a definite life span as long as you aren't trying to put too much power through them.
I DO have a problem with slight knock under 2K but I can't prove my MSDs are doing it.
I sold my factory coils after a couple of months. But, ya know I can't prove my car is any worse or better.
Logic would say MSDs are better for boosted applications due to increased current. Increased current means a spark could resist increased pressures of a boasted motor. But, CD ignition isn't for everyone. They are notrious for a short spark. Note the multiple discharge on the side.
Anyways as for the durability of your coil packs... they are basically autotransformers. They don't have a definite life span as long as you aren't trying to put too much power through them.
