there is no way 3.91 will hurt its time it will only help it. it helped the 1le it will help the z/28.
the origianl z/28 sucked at the quarter mile becaue it had a 302. this one has a 427.
I think if the 1le can do 12.7 or so the z/28 whould have no problem with 12.2-12.3 at minimum.
the power difference betten the LS3 and the LS7 is night and day. the LS7 smashes it everywhere low end, top end, more rpm range. I have owned both. stock vs stock it has some much more power.
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shopping for 2017+1le or zl1
2009 CTS-V -sold
2015 Hellcat-sold
2013 ZL1 -sold
2007 Z06- sold
2014 Chrysler 300
2011 Duramax 8" lift, deleted tuned
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