GMT 900 Trucks General Discussion 2007 - 2013 Trucks | General Discussion

4L80 WOT Shift points (factory and tuned)

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Old 06-18-2014 | 09:49 AM
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Roddy8's Avatar
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Default 4L80 WOT Shift points (factory and tuned)

Hey guys,

I notice my Rig was shifting pretty early before my tune....Maybe 5100rpm Now with my tune its shifting the 1-2 at around 5400rpm.

It sounds and feels like the truck is just getting going. I'm doing a custom tune in a week or two here, and while I could ask the tuner, I wanted to know what you guys thought. How late can this truck shift? Where does yours shift with the tune? I thought I had heard 6000rpm before?
Old 06-18-2014 | 10:06 AM
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Originally Posted by Roddy8
Hey guys,

I notice my Rig was shifting pretty early before my tune....Maybe 5100rpm Now with my tune its shifting the 1-2 at around 5400rpm.

It sounds and feels like the truck is just getting going. I'm doing a custom tune in a week or two here, and while I could ask the tuner, I wanted to know what you guys thought. How late can this truck shift? Where does yours shift with the tune? I thought I had heard 6000rpm before?
i have a completely different setup but im shifting at 6700, but have springs and a cam to support that, check my mods in my signature
Old 06-18-2014 | 10:22 AM
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Originally Posted by walledition
i have a completely different setup but im shifting at 6700, but have springs and a cam to support that, check my mods in my signature
Sounds pretty damn stout! I don't think I'll be revving that high
Old 06-18-2014 | 11:59 AM
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Originally Posted by Roddy8
Sounds pretty damn stout! I don't think I'll be revving that high
depends a lot on your cam setup how high u wana rev, if the cams power isnt up there it will hurt you shifting higher, from my setup going from 6000 to 6700 was a big improvment, if your engine is stock u might wana shift at 5700-5800 but im no expert
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