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V8 and V6 Transmissions / Driveline (6L80 / 6L50 / TR6060 / AY6) Driveshafts | Differentials | Gears | Rearends | Clutch | Shifters

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Old 02-13-2014, 03:20 AM   #1
Kafuzke
 
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Question Where can i get 3.55 gears for my L99?

After calculate and consider my desire ratio is 3.55.
But where can i get them?
I read that the 3.55 diff from the V6 doesn't fit to swap the hole diffhouse. Is it right?
Then does the Ring & Pinion set for the V6 also doesn't fit, right?

Aftermarket i don't find an Ring & Pinion set for the V8

Why 3.55? In the 5th gear the car should be run 169 mph at redline with 6.000 rpm.

With 3.7 i lose to much speed. The 3.45 from the LS3 seems to me to be little impact at the acceleration, isn't it?
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Old 02-13-2014, 03:44 PM   #2
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You're right, the 3.55's will not fit in an SS diff.
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Old 02-13-2014, 04:30 PM   #3
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From what I've seen, the 3.45 gears are ideal for a DD, especially if you decide on forced induction. 3.73s are great for the manual SS because of the high first gear (3.xx, right?). But for my car or an automatic V6 or L99, you probably don't want more than 3.45.
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Old 02-14-2014, 04:51 AM   #4
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Do you mean a 3.45 is really noticeable? That's only 5% difference and brings arithmetical only round 22 ft. lbs.
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Old 02-14-2014, 06:16 AM   #5
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3.73 is great for the L99. 3.91 and higher are great for the LS3.
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