How would a 3.45 gear affect my e.t's? - Pontiac G8 Forum: G8 Forums -
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post #1 of 2 (permalink) Old 06-10-2019, 06:07 PM Thread Starter
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Posts: 9
How would a 3.45 gear affect my e.t's?

I just went to the track after the new circle d 258 and dyno tune. It went 12.56 at 108.5. Mods are roto fab, ebay headers to corsa, dyno tune and converter on street tires! I just picked up some drag radials but havent made it back to try them yet. I also just installed a nitrous outlet plate kit but have not tried it yet either. I was considering picking up a new diff with 3.45 gear and was curious how much difference this would make in my e.t.? Anybody have similar mods and made the gear change? Was it worth the 5-600 bucks?
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post #2 of 2 (permalink) Old 06-16-2019, 10:11 PM
11 second bolt-on car!
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Join Date: Oct 2007
Location: NJ
Posts: 212
Going from stock gears to 3.45 knocked about .15-.2 off my ET.

2009 Stryker Blue Metalic G8 GT
Bolt-on G8 GT Record Holder. 11.82 @ 114 on a 1.60 60'
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