Featured Parts
Z32 Transmission Adapter Kit
Z33/CD009 Transmission Adapter Kit
AR5 Transmission Adapter Kit
Most LS swap conversations obsess over the engine. The reality inside the garage is different. The transmission choice and the parts that support it impact whether your project goes together cleanly or turns into a geometry problem with a welder and a tape measure.
An LS project is more straightforward when you focus on the right parts first: the LS transmission adapter kit, the crossmember, and the transmission mount from G Force Performance Products.
This guide focuses on what actually matters when pairing an LS engine to the transmission you want to run.
This process is about mating an LS engine to a transmission that was never designed to live behind it. Popular choices include:
These transmissions are strong, affordable, and widely available. The challenge is making them work correctly with the LS block and your chassis. That is exactly what the G Force Transmission Adapter Kits for LS and other engines are built to solve.
A proper LS transmission adapter kit removes the unknowns. Instead of custom machining, guesswork spacing, or mismatched clutch geometry, the kit provides:
This is how builders successfully run a CD009 or Z32 behind an LS without exotic bellhousings or custom fabrication.
These kits make unconventional transmissions behave like they were designed for the LS.
Once the transmission is bolted to the LS using the adapter kit, the next problem shows up underneath the car.
The transmission mount location is now wrong for the chassis.
This is where most projects stall.
Most universal crossmembers rarely line up. The driveline angle is off. Exhaust clearance disappears. Floor modifications start creeping in.
That is why G Force builds application-specific transmission crossmembers for LS transmission swaps, such as the 4L60E, 4L80E, T56, AR5, and others.
These crossmembers:
When you reposition an LS engine to clear the firewall, oil pan, or steering, the transmission angle changes with it.
An adjustable transmission mount lets you correct this without shimming, stacking washers, or redrilling holes.
It is a small part that solves a big problem.
|
Transmission |
Why Builders Choose It |
What Makes It Work |
|
CD009 6-speed |
Strong, affordable, smooth shifting |
LS to CD009 adapter kit + G Force crossmember |
|
Z32 5-speed |
Compact and budget friendly |
LS to Z32 transmission adapter + adjustable transmission mount |
|
AR5 |
Excellent gearing and strength |
LS manual transmission adapter + chassis-specific crossmember |
|
GM factory transmissions |
Direct GM compatibility |
Crossmember and mount correction |
Before the transmission ever goes in the car, the right tools matter:
These tools help you position the engine and transmission exactly where they need to be before tightening the first bolt.
When planning your project, think in this order:
This sequence prevents the domino effect in which one bad assumption triggers more work later.
Can a CD009 handle LS power?
Yes. With the proper LS to CD009 adapter kit, it has proven reliable in very high-horsepower builds.
Why not fabricate my own crossmember?
Maintaining driveline angle, exhaust clearance, and mount strength is harder than it looks. G Force crossmembers solve this without trial and error.
Do I really need an LS transmission adapter kit?
Yes. Without the correct adapter plate and pilot support, clutch alignment and input shaft engagement become serious issues.
What is the most overlooked part of this project?
The crossmember and mount. Most fitment problems show up after the transmission is bolted in place.
When you approach this from the adapter, crossmember, and mount side instead of the engine side, the whole build becomes more predictable.
Choose the transmission.
Use the correct LS transmission adapter kit and support it with the right crossmember and mount.
That formula is why so many successful builds start with G Force.
