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Old Jun 24, 2005 | 11:15 AM
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arh
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Default 4.10's

i'm about to put 4.10's in my non-z51,6spd. will i need to correct my speedo for the gear change? the only mods on my car so far is a corsa
touring cat back.headers are next.what kind of performance gains can i expect from the gear change?
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Old Jun 24, 2005 | 11:32 AM
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You dont need to correct for the speedo. I went 3.90s and it pulls a lot better. Fearless prediction, you will be happy.
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Old Jun 24, 2005 | 11:40 AM
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Originally Posted by arh
i'm about to put 4.10's in my non-z51,6spd. will i need to correct my speedo for the gear change? the only mods on my car so far is a corsa
touring cat back.headers are next.what kind of performance gains can i expect from the gear change?
You'll probably see your 1/4 et drop by about 1/10
and your trap speed go up by about 1mph.

You'll notice the car feels like it has way more punch
than before. Your times won't be much better because
while it'll pull noticeably harder in each gear, it stays
in each gear for less time.

Your speeds in gears would be as follows:

base, non-Z51:
1: 55
2: 82
3: 113
4: 148

base, non-Z51, 4.10s:
1: 46
2: 68
3: 94
4: 123

Pat
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