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Found an interesting article on ignition

 
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chevymad
Master B


Joined: 11 Jan 2004
Posts: 5472


1987 Pontiac Formula
PostPosted: Wed Feb 18, 2015 10:03 pm    Post subject: Found an interesting article on ignition Reply with quote
Just found this ignition article. I've always heard that if you have an HEI there is no need to install a CD ignition system. This goes into the reasons why you maybe should. It also discusses coil selection when you have a CD ignition. The type of coil you select will even change the ignition timing and can be used as a tuning aid. But the effect isn't very noticeable with a stock inductive ignition.

http://www.hotrod.com/how-to/engine/ignition-coil-tech/
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QwkTrip
11sec Club


Joined: 17 Feb 2004
Posts: 3942
Location: Peoria, IL

1989 Pontiac Firebird
PostPosted: Wed Feb 18, 2015 10:59 pm    Post subject: Reply with quote
I had an MSD box with my HEI distributor on my ZZ4 El Camino. I just thought that was normal?
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aaron_sK
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Joined: 23 Jan 2006
Posts: 8834
Location: Back in beautiful Tacompton

1987 Chevrolet Camaro IROC-Z
PostPosted: Thu Feb 19, 2015 12:49 pm    Post subject: Reply with quote
That one is news to me as well. I think I see MSD boxes on HEI cars more than on anything else. I ran one on a DuraSpark with good success. Shrug
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