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Old 07-11-2018, 03:51 PM   #1
graf101
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RPM 4L80e ?

So I have an RPM Stage 5 4L80e swapped into my 2015 1LE, and I was wondering what gear /rpm you other 4L80e and th400 guys are shifting into at the 1/4 stripe? Mine is at 6400 rpm in 3rd gear when almost crossing at the stripe, and I have been manually shifting into 4th (overdrive)before the stripe. I was told to leave it in 3rd gear. Thoughts or suggestions?
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Old 07-12-2018, 08:25 AM   #2
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Do you lock the converter?
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Old 07-12-2018, 09:11 AM   #3
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leave it in third and if you need more rpms, as stated above lock it up in third but only if you have a multi disc converter.
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Old 07-12-2018, 10:36 AM   #4
graf101
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Converter is a single disc Vigilante 3400, and I don't know if it's locking up or not.
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Old 07-12-2018, 11:18 AM   #5
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definitely do not lock it up! you will trash lock up. so if you need less rpms, go to a taller tire/ numerically lower gear.

Definitely stay out of 4th. I didn't have any luck with a 4l80 and wot 3-4 shifts
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