LS engine swaps are all the rage these days, and for good reason. These engines are known for their durability, reliability, and impressive power output. However, when it comes to choosing the best transmission for your LS swap, things can get a bit overwhelming. There are so many options out there, and it can be difficult to determine which one is right for your build. In this article, we'll break down the key points you should consider when looking for the best transmission for your LS swap.
First and foremost, you need to consider your power goals. The transmission you choose will depend largely on how much power you plan to make. If you're building a mild street machine, a stock T56 or 4L60E may be sufficient. However, if you're planning on making serious power, you may want to consider a stronger option like a T56 Magnum or a 4L80E.
Next, you need to consider the type of driving you'll be doing. If you're building a drag car, you'll want a transmission with a quick-shifting manual valve body. On the other hand, if you're building a street machine, you may prefer an automatic transmission for ease of use.
Another important factor to consider is the type of vehicle you're swapping the LS engine into. Some transmissions, like the T56, may require significant modifications to fit certain chassis. Other transmissions, like the 4L80E, may have better fitment options for certain vehicles.
You'll also want to consider the cost of the transmission and any necessary modifications. Some transmissions may be more expensive than others, and you may need to budget for additional parts like a custom driveshaft or transmission crossmember.
Finally, it's important to do your research and consult with experts in the LS swap community. There are countless forums and online resources available to help you make an informed decision. By considering your power goals, driving style, vehicle fitment, cost, and expert advice, you can find the best transmission for your LS swap and enjoy reliable, high-performance driving.
10 Best Transmission For Ls Swap
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1. Ls Swap Steel Transmission Adapter Bellhousing, Gm Manual/t5/tkx
The LS Swap Steel Transmission Adapter Bellhousing is a high-quality upgrade designed to provide additional safety and strength to resist cracking. This product is an upgraded steel version of the GM 621 bellhousing, which is a popular choice for many LS swaps. Unlike the original aluminum bellhousing, this steel version is far more durable and less prone to cracking, making it a more reliable choice for your swap.
This adapter bellhousing is designed to accept GM 3 and 4 speed manual transmissions such as Muncie T-10, as well as several aftermarket 5-speed transmissions by Tremec and Richmond. This versatility makes it an excellent choice for Muscle Car LS swaps, where floor and tunnel modification can be kept to a minimum due to the smaller transmission size compared to a T-56.
Another great feature of this adapter bellhousing is that it is compatible with standard 168 tooth LS flywheels and clutches, as well as stock and aftermarket LS starters. This makes it a convenient and practical choice for anyone looking to upgrade their LS engine and transmission.
However, it should be noted that this adapter bellhousing is designed for use with hydraulic throwout bearings only, as there is no provision for a mechanical clutch fork. This means that you will need to ensure that your hydraulic throwout bearing is compatible with this adapter bellhousing before making your purchase.
Overall, the LS Swap Steel Transmission Adapter Bellhousing is an excellent choice for anyone looking to upgrade their LS engine and transmission. With its superior strength and durability, versatile compatibility with a range of manual transmissions, and ease of installation, this product is sure to provide you with the quality and reliability you need for your LS swap project.
2. Hooker Transmission Crossmember 1967-69 F-Body/ 1968-74 Nova Ls Swap T56
The Hooker Transmission Crossmember is an essential component for any 1967-69 F-Body or 1968-74 Nova LS Swap T56. This crossmember is designed using CAD modeling and FEA analysis to ensure optimal fitment, strength, weight, safety, and appearance. It is constructed with high-strength low-alloy steel, making it durable and long-lasting.
One of the most critical features of the Hooker Transmission Crossmember is its engineered 3 to 3.5 degree engine/transmission inclination angle. This angle is essential for obtaining suitable U-joint working angles in your vehicle. The crossmember ensures that your U-joints are working correctly, minimizing wear and tear on your driveline.
Additionally, the Hooker Transmission Crossmember provides the highest clearance available for up to 3" exhaust system routing. It is designed to allow for the most efficient routing possible, which is essential for high-performance vehicles. This feature ensures that your exhaust system will not interfere with the crossmember or any other part of your vehicle's undercarriage.
The Hooker Transmission Crossmember is also designed to be aesthetically pleasing. Its sleek and stylish design complements the overall appearance of your vehicle. It is a perfect addition to any LS Swap T56 with its clean and sleek look.
Furthermore, the Hooker Transmission Crossmember is incredibly easy to install. It is designed to fit perfectly in your vehicle, and installation can be completed in no time. The crossmember is also compatible with most aftermarket exhaust systems, making it an ideal choice for those looking to upgrade their vehicle's performance.
In conclusion, the Hooker Transmission Crossmember is an essential component for any 1967-69 F-Body or 1968-74 Nova LS Swap T56. Its high-strength low-alloy steel construction, engineered inclination angle, highest clearance for exhaust system routing, and sleek design make it a must-have for any high-performance vehicle. The crossmember is durable, long-lasting, and easy to install, making it an ideal choice for anyone looking to upgrade their LS Swap T56.
3. Ls Swap Steel Transmission Adapter Bellhousing, T-56, Tr-6060
The LS Swap Steel Transmission Adapter Bellhousing is an essential component for anyone looking to upgrade their transmission to a Tremec 6-speed model, including factory T-56, TR-6060, and aftermarket T-56 Magnum. This upgraded steel version of the factory aluminum bellhousing is designed to provide additional safety and strength, making it an ideal choice for high-performance applications.
The LS Swap Steel Transmission Adapter Bellhousing is compatible with all LS engine blocks, providing an easy solution for T-56 6-speed installations. It accommodates standard 168 tooth LS flywheels and clutches, as well as stock and aftermarket LS starters. This makes it a versatile option that can be used with a variety of LS engine setups.
It is important to note that the LS Swap Steel Transmission Adapter Bellhousing is designed for use with hydraulic throwout bearings only, as there is no provision for a mechanical clutch fork. This ensures that the bellhousing is optimized for the latest transmission technology, while providing a seamless installation process.
The LS Swap Steel Transmission Adapter Bellhousing is a high-quality product that is built to last. Its durable construction and reliable performance make it an ideal choice for anyone who wants to upgrade their transmission to a Tremec 6-speed model. With its ability to work with all LS engine blocks and compatibility with standard 168 tooth LS flywheels and clutches, this product is a must-have for anyone looking to improve the performance of their vehicle.
Overall, the LS Swap Steel Transmission Adapter Bellhousing is a top-quality product that provides a safe and reliable solution for upgrading to a Tremec 6-speed model. Its easy installation process, compatibility with LS engine blocks, and ability to work with standard 168 tooth LS flywheels and clutches make it a must-have for anyone looking to improve the performance of their vehicle.
4. Evil Energy 6an 3/8" Ptfe Ls Swap Efi Fuel Line Fitting Kit, E85 Nylon Braided Fuel Hose 25ft
The EVIL ENERGY 6AN 3/8" PTFE LS Swap EFI Fuel Line Fitting Kit is a high-quality fuel line kit designed for use in EFI LS systems. This kit includes a 25FT nylon braided fuel hose, which is primarily used as a fuel injection hose, ls engine swap and EFI conversion fuel line, turbo oil feed and boost line, transmission oil cooler line, carb fuel line, fuel return line, vapor return line, vacuum line, fuel supply line, turbocharger fuel line, and other high-temperature, high-pressure applications.
The inner diameter of the hose is 5/16 inches, while the outside diameter is 0.465 inches. However, it is highly recommended that buyers measure before purchasing to ensure compatibility with their systems. The working temperature range of the hose is impressive, ranging from -76℉ to 446℉ (-60℃ to 230℃). It can handle a maximum working pressure of 3000 psi, with a bursting pressure of 10000psi. The AN-6 nylon braided high-pressure PTFE fuel line is incredibly durable and can withstand extreme circumstances.
The PTFE fuel hose is compatible with all automotive fuels, lubricants, and coolant. Buyers can rest assured that this hose will hold up well under harsh conditions, making it a reliable choice for a wide range of applications. However, it is essential to note that PTFE hose is relatively hard and cannot be bent or folded in half. It requires professional installation to ensure that it is installed correctly and will function optimally.
In conclusion, the EVIL ENERGY 6AN 3/8" PTFE LS Swap EFI Fuel Line Fitting Kit is a high-quality and durable fuel line kit designed for use in EFI LS systems. Its nylon braided fuel hose is versatile and can be used in a wide range of applications, making it a reliable choice for many car enthusiasts. With its impressive working temperature range and maximum working pressure, buyers are sure to get a great value for their money.
5. Hooker Transmission Crossmember, 2nd-Gen F-Body Ls Swap, 4l6
The Hooker Transmission Crossmember is an essential component for any 2nd-Gen F-Body LS Swap project that utilizes a 4L6 transmission. This product is designed to provide a durable and long-lasting solution for your transmission mounting needs. The crossmember is constructed using high-strength low-alloy steel which ensures that it can withstand the rigors of high-performance driving.
One of the key features of the Hooker Transmission Crossmember is its ability to install with either a stock rubber or a Prothane 7-1604 poly mount. This flexibility ensures that you can customize the mounting solution to your specific needs. Additionally, the crossmember is designed using CAD modeling and FEA analysis which ensures optimal fitment, strength, weight, safety, and appearance.
The Hooker Transmission Crossmember is built to last, and it is engineered to provide maximum strength and durability. The high-strength low-alloy steel construction ensures that it can withstand the demands of high-performance driving. This product is designed to handle the stresses and strains of high-torque applications, making it a reliable and long-lasting solution for your transmission mounting needs.
The Hooker Transmission Crossmember is also versatile, as it can be installed with either a stock rubber or a Prothane 7-1604 poly mount. This allows you to tailor the installation to your specific needs and preferences. Whether you prefer a softer, more comfortable ride or a stiffer, more responsive ride, the Hooker Transmission Crossmember can accommodate your preferences.
The design process for the Hooker Transmission Crossmember was rigorous and thorough. CAD modeling and FEA analysis were used to ensure optimal fitment, strength, weight, safety, and appearance. This ensures that the crossmember is not only functional but also aesthetically pleasing. The attention to detail in the design process is evident in the finished product, which is both durable and visually appealing.
In conclusion, the Hooker Transmission Crossmember is an essential component for any 2nd-Gen F-Body LS Swap project that utilizes a 4L6 transmission. Its high-strength low-alloy steel construction ensures durability and longevity, while its versatility allows you to customize the installation to your specific needs. The product is designed using CAD modeling and FEA analysis, which ensures optimal fitment, strength, weight, safety, and appearance. If you're looking for a reliable and long-lasting solution for your transmission mounting needs, the Hooker Transmission Crossmember is the way to go.
6. 4l60e To 4l80e Ls Swap Transmission Plug And Play Adapter Harness For 1998-2006 Silverado Sierra Trans.
The Transmission Plug and Play Adapter Harness Connector is an effective function for converting from 4L60E to 4L80E plug-and-play adapter of 1998-2006 transmission. It is compatible with GM vehicles originally equipped with LS series 4L60E Transmissions, making it a perfect fit for LS Swap, Silverado, and Sierra vehicles.
The adapter harness connector is easy to use and install, as it is designed to retain all appropriate electrical connections to transmission when converting from 4L60E to 4L80E. It is a plug-and-play device that requires no special tools or technical expertise to install. The red with a black strip – pin 22, dark blue stripe – pin 23, VSS pin location – red or green ECU connector makes it easy to identify and install correctly.
The high-quality adapter is made of premium materials that meet or exceed OEM standards, offering higher stability, and reliability. The wiring of the input speed sensor is plug into the power train control module, and this kit requires that you have your PCM tuned for the transmission.
The packaging includes a plug and play transmission adapter, pre-terminated input speed sensor wiring, terminals flame retardant loom. The only thing that you will have to do is pin the Input Speed Sensor wiring into the PCM.
The friendly service is another reason to trust this product. The manufacturer offers a 2-year service, hassle-free return, and money-back policy, making it a risk-free purchase. If there are any questions about the product, the customer service team is available to assist via email, and they usually reply within 12 hours.
In summary, the Transmission Plug and Play Adapter Harness Connector is a high-quality product that is easy to use and install. It is compatible with GM vehicles originally equipped with LS series 4L60E Transmissions and is designed to retain all appropriate electrical connections to transmission when converting from 4L60E to 4L80E. With a 2-year service, hassle-free return, and money-back policy, this product is an excellent addition to any LS Swap, Silverado, or Sierra vehicle.
7. Ls Swap Transmission Crossmember For 63-72 Chevy C10 Pickup With Black Powder Coating.
The ELITEWILL LS Swap Transmission Crossmember with Black Powder Coating is the perfect fit for 1963-1972 Chevy C10 GM Full Size Pickup trucks. This transmission crossmember offers a range of benefits that make it the perfect addition to your truck.
One of the standout features of this product is its ability to accommodate 3" dual exhaust tucked up in the frame. This allows for a truck with air bags to lay frame without fear of damaging their exhaust system. Additionally, the crossmember is designed to be lean and efficient, weighing in at just 15 pounds.
The superior quality and durability of this crossmember cannot be overstated. It is made with super thick materials that can support the weight of the vehicle while also allowing for the exhaust pipes to be tucked nice and high under the truck.
Installation is a breeze, with the crossmember supporting the two bolts up and down. However, it may be necessary to drill holes on the frame rail. Once installed, this transmission crossmember offers a range of benefits that make it the perfect addition to your Chevy C10 GM Full Size Pickup.
Overall, the ELITEWILL LS Swap Transmission Crossmember with Black Powder Coating is a must-have for any Chevy C10 GM Full Size Pickup truck owner. Its superior quality, durability, and efficient design make it the perfect addition to your vehicle. Plus, its ability to accommodate 3" dual exhaust tucked up in the frame makes it a standout choice for those with air bags who want to lay frame without worrying about damaging their exhaust system.
8. Hooker Headers 12644hkr-1: G-Body Ls Swap Transmission Crossmember, Black
The Hooker Headers 12644HKR-1 is a transmission crossmember designed for GM G-Body vehicles, with minor updates from the previous model, 12644HKR. This product facilitates the installation of various transmissions, including 4L60, 4L65, 4L70, 4L80, TH400, 2004R, T56, and T56, behind LS engines in 1978-1988 GM A/G Body applications.
Designed with CAD modeling and FEA analysis, this crossmember offers optimal fitment, strength, weight, safety, and appearance. The welded steel construction ensures durability and reliability for long-term use.
One of the critical features of this product is its ability to provide an optimized engine/transmission inclination angle. This angle is crucial in obtaining suitable U-joint working angles, especially when installed with Hooker 12643HKR engine mounts.
Overall, the Hooker Headers 12644HKR-1 is an essential component for LS engine swaps in GM G-Body applications. Its superior design and construction make it a reliable and efficient option for those looking to upgrade their vehicle's transmission.
9. Ls1/lsx Swap Standalone Wiring Harness With Manual Transmission Support And Mechanical Throttle Body For Drive By Cable Ls1 Engines 1997-2006. Includes User Manual.
This LS1 LSX Swap Standalone Wiring Harness is a high-quality product designed to retrofit 1997-2006 Drive By Cable LS1 Engines into older muscle cars and street rods, as well as newer non-emissions controlled vehicles. The wiring harness is compatible with T56 or Non-Electric Mechanical Throttle Body transmissions, including T56 TH400 TH350 700R4 200-4R Manual Transmission. It comes with a user manual that contains a complete installation instruction packet and a list of compatible parts.
The wiring harness is fully plug-and-play and comes with a high-quality grommet already installed. The sliding seals ensure a leak-proof installation by professionals. The wiring harness contains electric wires, and the design of the sliding bellows seal ring improves the durability of the wiring harness. The entire wiring harness weighs approximately 6.17 pounds and has a total length of approximately 118 inches. The length of the power system control module installation position from the rear of the cylinder head to the vehicle dashboard is approximately 4-5 feet, with 33 plug adapters and a bundle of spare wiring harnesses.
This LS1 LSX Swap Standalone Wiring Harness is designed to work with the factory intake manifold and multec injectors with flex-fuel injectors EV6 or Delphi Multi optional. The harness allows for a standalone injection system that is compatible with 4.8, 5.3, and 6.0 LS engines. The wiring harness is also compatible with any manual transmission, including T56 TH400 TH350 700R4 200-4R.
The wiring harness has a 1-year shelf life and comes with a warranty. If you have any questions or concerns about the product, the customer service team is available to assist you 24/7 via email. It is important to note that if your car has been modified, this cable harness may not be installed correctly. Before using the product, make sure that you have not replaced any original accessories, as this could affect the use of the harness.
In summary, this LS1 LSX Swap Standalone Wiring Harness is a top-quality product that is compatible with a wide range of LS engines and manual transmissions. It is easy to install and comes with a user manual that contains a complete installation instruction packet and a list of compatible parts. The wiring harness is durable, leak-proof, and comes with a warranty, making it a smart investment for anyone looking to retrofit their LS engine.
10. Adapter Harness Kit For Ls Swap Transmission, 4l60e To 4l80e, Compatible With Chevy Silverado Sierra Trans 1998-2006, Plug And Play.
The WMPHE Compatible with Transmission Wire Adapter Harness Connector is an essential component for converting a 4L60E transmission to a 4L80E transmission. It is specifically designed to work with the LS swap Chevy Silverado Sierra and Trans, and is compatible with 1998 to 2006 transmission models.
The product is manufactured according to OEM production standards and is made of high-quality plastic, alloy, and copper wire materials. It is a plug and play adapter harness kit that works as genuine parts, making it easy to replace and match the original equipment.
The WMPHE transmission adapter harness plug features VSS pin location options for red or blue, ECU connector with a red and black stripe on pin 22, and a dark blue with white stripe on pin 23. It is essential to note that as the product is manufactured, the wire color is random. If you receive black and green wires, the black wire is pin 23, and the green wire is pin 22.
It is crucial to calculate the pins on the original harness transmission connector before purchasing the product. If the original harness transmission connector has 11 pins, the WMPHE Compatible with Transmission Wire Adapter Harness Connector is suitable. However, if it has 13 or more pins, the product will not be suitable.
The WMPHE Compatible with Transmission Wire Adapter Harness Connector is manufactured according to strict quality control standards, ensuring that it works correctly and reliably. It is an essential component for anyone looking to convert their 4L60E transmission to a 4L80E transmission, making it easy to reserve all the proper electrical connections to the transmission.
In summary, the WMPHE Compatible with Transmission Wire Adapter Harness Connector is a reliable, high-quality product that is essential for anyone looking to convert their 4L60E transmission to a 4L80E transmission. It is manufactured according to OEM production standards, is a plug and play adapter harness kit, and is easy to replace and match the original equipment. It is essential to check the information before purchasing to determine whether it is suitable for your needs.
Best Transmission For Ls Swap FAQs
Are there any specific modifications or upgrades I should consider when choosing a transmission for my LS swap?
When choosing a transmission for your LS swap, there are a few modifications and upgrades you should consider. Firstly, consider the torque capacity of the transmission. The LS engine can produce a lot of torque, so you will want a transmission that can handle the power. Upgrading to a heavy-duty torque converter and clutch kit can also help handle more power.
Another upgrade to consider is a shift kit or upgraded valve body. This can improve the shift quality and allow for quicker, firmer shifts. Additionally, if you plan on doing any racing, a manual valve body can provide more control over gear selection.
Finally, consider the length and mounting of the transmission. The LS engine is often swapped into different vehicles, so make sure the transmission you choose will fit properly and can be mounted securely. With these modifications and upgrades, you can ensure that your LS swap transmission is up to the task of handling the power of your LS engine.
How do I choose the right transmission for my specific LS engine and vehicle application?
Choosing the right transmission for your LS engine and vehicle application involves several factors. Firstly, consider the type of vehicle you have and what you intend to use it for. Factors such as the weight of the vehicle, the intended use (racing, towing, daily driving), and the terrain it will be driven on will determine the type of transmission that is best suited. Secondly, look at the horsepower and torque of the LS engine, as this will determine the strength of the transmission needed. Thirdly, consider the type of transmission you want – manual or automatic, and the number of gears you need. Finally, look at the compatibility of the transmission with the LS engine and the vehicle's drivetrain. It is important to consult with a trusted mechanic or transmission specialist to ensure you choose the right transmission for your specific LS engine and vehicle application.
What are the advantages and disadvantages of using a manual vs. automatic transmission in an LS swap?
Advantages of a manual transmission in an LS swap include better control over gear selection, increased fuel efficiency, and better performance in high-performance settings. A manual transmission can also be easier to maintain and repair. However, they can be more difficult to drive in heavy traffic and require more skill and attention while driving.
Advantages of an automatic transmission in an LS swap include ease of use in heavy traffic conditions, smoother shifting, and less driver effort required. Automatic transmissions are also generally more reliable and require less maintenance. However, automatic transmissions may not provide the same level of control over gear selection, and they can be less fuel-efficient and less responsive in high-performance situations.
The choice between a manual or automatic transmission ultimately depends on the driver's preference and intended use of the vehicle. Some drivers prefer the control and performance of a manual transmission, while others prioritize ease of use and convenience with an automatic transmission.
What are the most commonly used transmissions for LS engine swaps?
The most commonly used transmissions for LS engine swaps are the GM 4L60E/4L65E, GM 4L80E, and Tremec T56. The 4L60E/4L65E is a popular choice due to its compact size, electronic controls, and ability to handle moderate horsepower and torque. The 4L80E is a heavy-duty option that can handle high horsepower and torque, making it a popular choice for performance builds. The Tremec T56 is a six-speed manual transmission that is commonly used in high-performance builds, offering smooth shifting and improved efficiency. Other options include the GM 6L80/6L90, which are newer transmissions and offer improved shift quality and efficiency, and the TH400, which is a heavy-duty automatic transmission often used in drag racing applications. Ultimately, the choice of transmission will depend on the intended use and power output of the LS engine swap.
Which transmission offers the best balance of strength and affordability for LS swaps?
The Tremec TKO 600 transmission is widely considered to offer the best balance of strength and affordability for LS swaps. The TKO 600 features a robust construction with a 26-spline input shaft and a 31-spline output shaft, making it capable of handling up to 600 lb-ft of torque. It also offers a wide range of gear ratios, allowing for optimal performance in a variety of driving conditions.
While the TKO 600 is not the cheapest option on the market, it is still relatively affordable when compared to other high-performance transmissions. Additionally, its durability and versatility make it a popular choice for both street and track use. Other popular transmission options for LS swaps include the T56 and the 4L60E, but the TKO 600 is often considered the best choice for those looking for a balance of strength and affordability.