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Sun Coast A1-6VB-TCM-LLY Allison 5-6 Speed Conversion
PART#
A1-6VB-TCM-LLY | SKU SCCA1-6VB-TCM-LLY
Vehicle Fitment For:
2004.5-2005 GM 6.6L Duramax LLY
See full application list below
Discontinued
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Description
The Sun Coast A1-6VB-TCM-LLY Allison 5-6 Speed Conversion for your 2004.5-2005 GM 6.6L Duramax LLY converts your 5-Speed Allison A1000 Transmission into a 6-Speed like the later models. With the conversion, you can drop 325 engine rpm @ 75 mph with 3.73 gears. While increasing fuel economy 1 1.5 MPG, reduces engine noise while cruising, a truck with 3.73 gears that normally likes cruising at 62 MPH will now cruise nice at 72 MPH. The gear ratio in your 5 speed is .71 and our 6th gear will be .61. 6th gear can be disabled with your two haul button and 5th canceled with OD off. Requires valve body and TCM change. No wiring, no modifications required.
Features:
- Decrease Cruising RPMs
- No Wiring, No Modifications Required
- Converts 5-Speed Automatic To 6-Speed
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Frequently Asked Questions
What all comes in the kit?
The TCM and valve body.
[@answer]With this kit added to a 2005 5 speed trans. Will it down shift to 5th or drop to 4th when pulling hills? With this kit added to a 2005 5 speed trans. Will it down shift to 5th or drop to 4th when pulling hills?
This could depend on the grade of hill, but in theory it will drop to 5 th gear from 6 th .
do i need to changed the ecm board on the trans
The SUN COAST A1-6VB-TCM-LLY ALLISON 5-6 SPEED CONVERSION will come with everything needed to do the 5 to 6 speed conversion including tuning for the TCM.
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Specifications For Sun Coast Converters A1-6VB-TCM-LLY
MPN
A1-6VB-TCM-LLY
SKU
SCCA1-6VB-TCM-LLY
ID
25605
Manufacturer Name
Sun Coast Converters
Shipping Weight
25.00 lb.
Shipping Length
10 in.
Shipping Width
14 in.
Shipping Height
14 in.
Fuel Type
Diesel
Prop 65
WARNING: Cancer & Reproductive Harm - P65Warnings.ca.gov
WARNING: Cancer & Reproductive Harm - P65Warnings.ca.gov
Internal
L0R0
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