SDP Built Allison 1000 Transmission with Billet Torque Converter
*Freight includes shipping BOTH ways and it must be a commercial address with a forklift or extra shipping charges may be applied.
This Allison 1000 is built in house to the highest of standards and includes a Goerend triple disc billet torque converter. All of our Allisons are built the same (clutch pack stackup) whether you're looking for a 1000+RWHP truck or you're looking for a reliable transmission for your 500HP daily driver. Our transmissions have been in several dozens of 1000+RWHP trucks with lots of abuse drag racing, dyno runs and sled pulling all on the same build for a full season. No matter your power level or what you do with the truck, we use the most robust clutch pack combinations possible, which is why we feel more than comfortable with being able to offer the lifetime warranty for an additional cost in sub 650rwhp applications. We set them up according to your predicted power level and we can add billet shafts/hub, C3 PTO oiling holes or a pan for the cost of parts. It is preferred to use your current transmission that is in your truck but we do have over 100 cores on the shelf which we can use to build one to order with specs for your truck and how you drive. Current lead time is 15-20 business days, please email firstname.lastname@example.org to verify.
- Billet Goerend triple disc converter (billet stator options as well)
- Mix of Raybestos GPZ PRO clutches with thick steels and Alto Carbonite
- 2011+ Allision parts for quicker shifts
- Modified Converter flow valve in pump
- Ratiotek parts in pump and valve body
- Sonnex upgrades in pump and valve body
- Transgo Shift kit + reconditioned valve body
- Upgraded shift valve springs in valve body to give us even quicker, smoother shifts than before
- Added oiling holes to clutch packs
- New gaskets + filters w/ filterloc kit
- Billet C2 hub is required past 650rwhp or you risk damaging splines on the P2 planet
- Billet P2 planet is required above 800rwhp, recommended when doing a billet C2 hub
- Billet input and output are extra, required above 900rwhp
-Powder coating the unit is $565. If this option is selected, please tell us your color choice in the order comments.
We can have your transmission shipped to us to build, or build one of our cores to your specs and ship it to you. Contact us regarding shipping costs and times. Our fixed rate of $1075 is for round trip freight (to you and your core back to us is included) if going to a commercial address with a forklift. If you send your transmission to us on an open pallet, we charge $165 extra for the crate that it will be returned to you with, the transmission must be crated to have insurance on the shipment.
*We recommend that you add an aftermarket transmission cooler if you plan to tow heavy in higher temperature climates (factory or AN lines only, we do not approve of crimping soft hose to the factory hard line as it will blow off over time with the added pressure and cause failure).
*The transmission cooler and heat exchanger MUST be cleaned using a HotFlush machine, and the TCM must have the TAPS reset (in some cases, a new TCM may be required).
*The core must come back within 30 days in rebuild-able condition in order to qualify for the full core refund. This includes but not limited to; planetaries, pump housings, shafts, gears, housings etc. Please allow 10-15 business days for inspection before the core refund begins processing. $300 applies to the torque converter, $400 for the shipping crate, and $1,300 for the transmission itself.
*The Powdercoating option will add at least 2 weeks to the current build time. If you select a Goerend Pan and powder coating, the pan will be coated to match, the Mag-Hytec pan will be left in their standard black powder coated color unless otherwise discussed.
Custom Power coat Color Options- Here
Any expressed warranty is only valid if the install requirements are followed as specified, there is a sheet provided with the transmission, if it cannot be found upon arrival, please email us and we can email a copy. A warranty on our transmission does not include original factory hard parts if not opted to upgrade such as shafts, planetaries, stock C2 hub, stator in the converter (ex. C converter option) etc.
38 Reviews Hide Reviews Show Reviews
Scott and the guys are great to work with! Have about 1,000 miles on the build and loving it. Would definitely recommend this shop and their transmission build.
I have been very impressed with this transmission s performance! A friend of mine has a 800hp set up and uses this tranny and its flawless. I am no where near the hp he is, but know this tranny will handle anything i will throw at it! And with the Life time unlimited miles available warranty, who else backs their product like this!? No brainer.
This company will go out of their way to get the job done.
Transmission arrived and immediately I was highly impressed, I wasn't expecting it to come back as clean as it did, followed the installation instructions exactly and it shifts beautifully roughly 500 Miles on it so far and I have 0 complaints. Scott and his guys are very good at what they do.
Shifts perfect. Awesome work, very clean and great install
Worth every penny. My LBZ finally recieved a long overdue transmission build. The truck shifts smoother then the day I bought it, and feels like it wants to get up go. I highly recommend this service for your truck.
Nice product and great workmanship done in a timely fashion!!!
Scott was great to work with and easy to communicate with! I gave him a call and he set me up with the right Allison build right away. All the shipping and work was done on time. After installing the trans, my truck runs better than ever. The shifts are smooth and very quick. I would definitely recommend an SDP Allison trans for any Duramax!
Scott worked with my schedule and had my truck in and out in 24 hours on less than a weeks notice. The trans shifts great and Scott has a 3 year/unlimited mile warranty that lets me know he’s as confident in this trans as I am. Great work by great people. Thanks SDP