Lexus GS300-GS400 Ford 8.8″ Rear End Swap Kit Grannas Racing

***WE ARE NO LONGER TAKING ON ANY 8.8 REAR END BUILDS WHILE WE MOVE THE SHOP TO FLORIDA – ALL KITS AND KIT PARTS ARE AVAILABLE. WE WILL JUST NOT BE BUILDING DIFFERENTIALS***

Different from all the other 8.8 kits out there, we designed this kit around the use of main cap load bolts, which are integrated into the aluminum diff cover that comes with my kit. These load bolts provide support for the main bearing caps in the rear, for dramatically increased strength on hard acceleration. This is a very important part of these 8.8 rears when it comes to high horsepower applications. The rear mounting “cage” was designed specifically to allow access to these load bolts, while still allowing for a full bolt in kit.

Watch my video on the install below to see how the load bolts work.

The Ford 8.8 is widely used and regarded as a great bang for your buck rear end. It has many many gear options available, which makes it not only very affordable, but also very flexible! 

This ford 8.8 kit will work with any of the dual front mount ear IRS cases. That includes the 2007-2010 Ford Explorer 8.8 case, the 1989-1995 Thunderbird SC iron case, or the Lincoln Mark8 / Mustang Cobra case. The Explorer cases are the cheapest and easiest to find! These junkyard rear diffs can be found at your local junkyard for $250. Pretty cool, right??!! This kit will allow you to bolt in this strong, affordable rear end kit into your Lexus GS300 or GS400. The kit is 100% bolt in, and used your factory rear subframe mounting holes. The rear cage and front mount also come with a lifetime warranty! I am confident they will hold whatever you throw at them!

Level 5 Axles:
This kit comes with Driveshaft Shop Level 5 axles, which have a billet outer stub that will bolt-in to your factory wheel hubs. These are good for around 1000hp. These axles also include a 31 spline billet inner 8.8 stub for whichever case you are running.

The Grannas Racing 8.8 Kit Includes:

1. Low Profile Cast aluminum rear diff cover
2. Fabricated rear cage mount
3. Fabricated front crossmember mount
4. All hardware required for installation
5. Customer will need to find 2007-2010 Ford Explorer diff at local junkyard, usually these go for $130-250. I can also build a diff to suit your needs.

Axles are a 2-3 week wait time. Aluminum or Carbon Fiber driveshafts can be made for any transmission combination. Just let me know what transmission combo you are running in the order notes! 

You can have a local shop mustang/domestic shop build your junkyard 8.8, or you can have me build you one to your specs. In the dropdown options, you can select a GR built rear which includes a Truetrac LSD, and gear ratio of your choice, and all new bearings and seals, it also includes me sourcing the case. For ring and pinion, in V160 cars I recommend a 3.25 gear, for the T56 Magnum / GR series transmissions I recommend 4.10 to 4.30 gearing.

Check out the pictures to see the stacking order for the front mount hardware.

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