Quote:
Originally Posted by Rabamaro
Has anyone installed the 3.91s in their manual SS and gone to the strip? I'm curious as to how this mod affects ET and trap speeds.
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I did this early this year. Stock form I trapped consistent 111.02. After the gear swap to 3.91 I slowed down to 110.55 consistent. However my 1/8 mile time picked up by 2.5 mph and my overall 1/4 et picked up a solid 3 tenths.
This all happened with the same track conditions or as close to as possible.
Take it for what it's worth.
Cheers