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10-14-2007 08:11 PM #5
CHR Member
- Join Date
- Dec 2005
- Location
- Lafayette
- Car Year, Make, Model: 68 Firebird 439 BBC
- Posts
- 745
I used to run at .042... MSD at 10.2:1 SCR with no problem. I've been told a bigger gap is touger on the coil and at higher compression there's more chance of misfire with bigger gaps so I've been at .035 with my new motor (10.8:1)... haven't tried much wider but I don't think there's any more power on the table...
I think .045 is probably fine for you but .035 would work more reliably and I don't think you'll find much performance difference between the two.
BTW: Thanks BigTruckDriver on the plug reading reference... I've seen a few of these for different applications but the one you reference is great.Last edited by skids72; 10-14-2007 at 08:15 PM.
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I've been checking in and figured the site had died forever. I checked today and bam it's back on. Awesome. I don't contribute much here, I just come to read and enjoy hotrod builds and good company...
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