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2950
Part #: SCCA1-6VB-TCM-LB7
Sun Coast A1-6VB-TCM-LB7 Allison 5-6 Speed Conversion
★★★★★
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Description
The Sun Coast A1-6VB-TCM-LB7 Allison 5-6 Speed Conversion for your 2001-2004 GM 6.6L Duramax LB7 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:
- Converts 5-Speed Automatic To 6-Speed
- Decrease Cruising RPM's
- No Wiring, No Modifications Required
Specifications
- MPN A1-6VB-TCM-LB7
- SKU SCCA1-6VB-TCM-LB7
- ID 6575
- Manufacturer Name Sun Coast Converters
- Shipping Weight 25.00 lb.
- Shipping Length 12 in.
- Shipping Width 12 in.
- Shipping Height 12 in.
- Fuel Type Diesel
-
Prop 65
WARNING: Cancer & Reproductive Harm - P65Warnings.ca.gov
- Internal L0R0
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Reviews
★★★★★
5.0/5 Stars out of 1 Reviews
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Chris (NJ) | April 6th, 2017
I've had this conversion since 2011. It is great for highway cruising and something the LB7 owners would love, but find it hard to spend the money to drop 300rpm and get maybe 1 MPG more or not. The truck definitely shifted better and more crisp and has the torque to cruise at a nice speed and not feel like you're pushing the engine that hard.The main reason why I am reviewing this is that I wanted to installed a Trango junior kit recently (2017). I purchased the(6 speed) junior kit, dropped the valve body and discovered that in fact the conversion valve body already had the kit installed in it from Suncoast. So I wasted 80 bucks on a kit that was already installed and it is not listed int the description. Just wanted to inform any buyers not to waste their money on the Junior kit.Maybe inquire to see if they install that kit standard in all conversions to be sure.
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Questions and Answers
Will this work with tap shift as well? I would like to add both tap shift as well the sixth gear valve body. Any known interference?
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Answer
It will not work on the 01-02 truck.
On an 03-05 truck, it will work 95%. (It has no control of the added 6th gear. So if in 6th gear the first tap down goes to 4th gear. It also cannot limit the 5-6 up shift. Both scenarios are remedied with the Tow Haul mode. T/H disables 6th.
It will not work on the 01-02 truck.
On an 03-05 truck, it will work 95%. (It has no control of the added 6th gear. So if in 6th gear the first tap down goes to 4th gear. It also cannot limit the 5-6 up shift. Both scenarios are remedied with the Tow Haul mode. T/H disables 6th.
Will this work on my LLY?
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Do I need the entire 6 speed gearbox for this?
View Staff Answer
Answer
No. This kit converts your existing 5-speed transmission into a 6-speed.
No. This kit converts your existing 5-speed transmission into a 6-speed.
Do i need a new computer with this also?
View Staff Answer
Answer
The Sun Coast A1-6VB-TCM-LB7 Allison 5-6 Speed Conversion for your 2001-2004 GM 6.6L Duramax LB7 requires valve body and TCM change. No wiring, no modifications required.
The Sun Coast A1-6VB-TCM-LB7 Allison 5-6 Speed Conversion for your 2001-2004 GM 6.6L Duramax LB7 requires valve body and TCM change. No wiring, no modifications required.
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