Post up your Shift Extensions...

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10-10-2009, 01:22 AM

#21

stock48

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My pro yank 3400 drops to 4950~5K on a 5500RPM shift point both 1st, and 2nd. Thats with 14psi, 4L80E in 4wd.

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10-10-2009, 04:43 AM

#22

viciousknid

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Circle D 2800-3200 base converter:
1-2 6200 > 4800
2-3 6200 > 4600

That was with 4.11's 275/45/20 . Have to check the 4.30's and see it's the same or not.

May also need to bump my shifts up a little after reading this thread.

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10-10-2009, 07:15 AM

#23

00ChevyScott

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I shifted that cam out at 6600 with the tow haul josh. It seemed to work pretty good.

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10-10-2009, 11:26 AM

#24

TXsilverado

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Quote:

Originally Posted by BlackGMC

I was just curious to see what other members shift extensions are?

I have a Performanbuilt 9.5 TC, that was supposed to be a 2800, but it acts more like a 3600... Anyways here are my shift extensions....

1->2
Shift at 6700 drops to 4850

2->3
Shift at 6800 drops to 5050

shifting 6750 it dropps back to 5200ish...new converter is supposed to keep me above 5500 at all times

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10-10-2009, 02:15 PM

#25

ap2002

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Shift 6700, > 5000,

ive road in a truck with a circle D 4k, shift at 6800> 5900!!! it feels damn good

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10-10-2009, 04:23 PM

#26

StrokerAce03

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Quote:

Originally Posted by dlt76028

how is that ss3600 dd? what can you brake stall it to?

Its a great DD stall if you tune the lockup; I can get around kind of easy shifting at 2100 or so. It usually shifts between 2500-3000 with me driving a little lead-footed.

On good tires I can brake stall it to 2600 or so and it flashes to around 3400-3500 behind my bolt on 4.8.

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10-10-2009, 05:04 PM

#27

04SilveradoMykk

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Here's my shift tables:

I don't use RPM because I have a 4x crank position reluctor wheel and a PCM looking for a 3x signal. I use MPH instead, with my tire & gear combo & drivetrain slip it's shifts around 5800-5900rpm

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10-10-2009, 11:05 PM

#28

53RUSSELL

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4l80E w/stock stall cut to 2500
9-1/2lb of boost

1->2
Shift at 6000 drops to 4100

2->3
Shift at 6000 drops to 4300

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10-10-2009, 11:15 PM

#29

trever1t

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ok, looking at a log that i just ran it shows me shifting a little earlier than commanded (6200) shifting from 6100-4600 in both the 1-2 and 2-3. Yank SC2800 converter.