Th350 Transmission Pan: Size Guide

There are a variety of transmission pans available for the TH350, with different features and price points to consider. The most popular options are made from steel or aluminium, with some products offering additional features such as zinc coating for corrosion resistance, or finned designs for superior cooling. The depth of the transmission pans also varies, with some products offering a deeper sump for increased fluid capacity. When choosing a transmission pan, it is important to ensure compatibility with your vehicle's specific transmission and engine setup.

TH350 finned aluminium transmission pan

The TH350 finned aluminium transmission pan is a high-quality, polished cast aluminium oil pan designed for the TH350 transmission. It offers superior cooling compared to stock-type steel pans thanks to its aluminium fins. The complete kit includes a drain plug, bolts, and a gasket for easy installation, making it a stylish upgrade that improves cooling efficiency.

The product has received positive reviews for its quality, functionality, and value, with customers praising its excellent fit, good finish, and durability. It is also recommended for its aesthetics and its ability to stop leaks, with multiple users noting improved performance after installation.

The Speedway Motors TH350 finned aluminium transmission pan is a popular choice, with users commending its well-made design and useful addition to their vehicles. It stands out for its excellent fit, good finish, and durability, and is specifically praised for its ability to halt leaks and improve performance.

Another option is the Pirate Mfg Polished Finned Aluminium Transmission Pan, which is compatible with the Chevy TH350 Turbo 350. This product includes a polished aluminium finned TH-350 transmission pan, a rubber gasket for the Turbo 350 trans pan, a drain plug, 13 chrome Allen head bolts, and 13 washers. However, it is important to note that it is not compatible with Pontiac or Oldsmobile vehicles.

For those seeking an extra capacity option, the Speedmaster GM Turbo TH350 Extra Capacity Fabricated Aluminium Transmission Oil Pan is a suitable choice. This product features a finned design for improved cooling and performance and is available in polished and black finishes. It includes a drain plug, rubber gasket, and mounting hardware.

Overall, the TH350 finned aluminium transmission pan is a recommended upgrade for those seeking improved cooling efficiency and superior quality.

TH350 transmission pan gasket

The TH350 transmission pan gasket is a crucial component in sealing the transmission pan, preventing leaks, and ensuring the smooth operation of your vehicle. Let's delve into the details of this gasket and explore its features, benefits, and installation considerations.

About the TH350 Transmission Pan Gasket

The TH350 transmission pan gasket is specifically designed for the Turbo Hydramatic 350 transmission, commonly found in Chevrolet and General Motors vehicles. This gasket plays a vital role in sealing the interface between the transmission pan and the transmission case, preventing leaks and ensuring the transmission fluid remains contained within the system.

Benefits of the TH350 Transmission Pan Gasket

One of the standout features of the TH350 transmission pan gasket is its construction. It is often made from a combination of rubber and steel, providing a durable and reliable seal. The rubber material is vulcanized to a rigid steel frame, enhancing its strength and durability. This construction offers several benefits over traditional cork gaskets, including:

• Superior Sealing: The rubber-steel design provides a much better seal compared to cork gaskets, effectively preventing leaks and ensuring the transmission fluid stays where it's supposed to be.
• Longevity: The TH350 transmission pan gasket is designed to last. The rubber-steel construction can withstand the heat and pressure of the transmission, providing years of dependable service.
• Easy Installation: This gasket typically does not require the use of sealants, making installation quicker and more straightforward. The gasket can also be reused, saving time and money during maintenance.

Installation Considerations

When installing a TH350 transmission pan gasket, it's important to ensure proper fitment. The gasket should align correctly with the transmission pan and case, and the bolt holes should match up perfectly. It's also crucial to verify compatibility with your transmission pan. While the TH350 gasket is designed for use with performance racing vehicles, some gaskets may be specifically intended for use with aluminum transmission pans rather than stamped steel pans.

Where to Buy

In conclusion, the TH350 transmission pan gasket is an essential component for sealing your transmission pan and preventing leaks. Its durable construction and reliable performance make it a worthwhile investment for any vehicle owner with a compatible Turbo Hydramatic 350 transmission. By choosing a high-quality gasket and ensuring proper installation, you can enjoy a leak-free transmission and peace of mind on the road.

TH350 transmission pan bolts

The bolts are made from durable steel with a chrome finish, or zinc-coated for corrosion resistance. The overall length of the bolts is .95", with a .75" under-head length, and a 5/16"-18 thread pitch.

When installing the bolts, it is important to be careful not to over-tighten them as this can cause the pan and gasket to warp and leak. Hand-tightening the bolts and then using a wrench to turn them an additional quarter turn, or torquing them to 10-13 ft/lbs, should be sufficient.

Some people also recommend using a high-tack spray on the transmission pan contact surface, pan rail, and gasket to help create a better seal.

TH350 transmission pan depth

The TH350 transmission pan is available in various materials, including steel, finned polished aluminium, chrome, and zinc. The depth of the TH350 transmission pan can vary depending on the type and brand.

Some TH350 transmission pans have a stock depth of 2-1/4 inches, while others offer a deeper option with a depth of 3-1/2 inches for extra capacity. The stock depth pan is suitable for vehicles that sit low, as it helps maintain ground clearance.

When choosing a transmission pan, it is important to consider the vehicle's specific transmission type, as well as the desired capacity and depth. The TH350 transmission is found in GM (Chevy, Cadillac, Olds, Buick) vehicles, as well as retrofitted Jeeps and other cars and trucks.

It is also worth noting that some transmission pans come with additional features, such as a magnetic drain plug for easier maintenance, a machined gasket surface for a secure seal, or raised fins for improved cooling.

When purchasing a TH350 transmission pan, it is advisable to check the product specifications to ensure compatibility with your vehicle's transmission and to verify the depth and capacity that best suit your needs.

TH350 transmission pan colour options

When it comes to TH350 transmission pans, there are a variety of colour options available to suit your preference and vehicle needs. Here is an overview of the different colour choices:

Black

The black steel GM TH-350 transmission pan is a popular option, featuring a sleek black painted finish with the stamped 350 Turbo logo. It has a depth of 2 inches and includes a drain plug, making it a practical choice. This pan is constructed from premium steel, ensuring durability and a precise fit. It is an excellent choice for those seeking a stylish yet functional upgrade for their transmission pan.

Chrome

For those seeking a shiny and distinctive look, the TH350 transmission pan in chrome steel is an ideal option. This pan features cooling fins that provide additional cooling capacity, making it a great choice for improved performance. The chrome plating not only enhances the aesthetic appeal but also offers corrosion resistance. This pan includes a drain plug and is designed for GM Turbo 350 automatic transmissions.

Polished Aluminum

If you're looking for a combination of style and performance, the TH350 finned aluminum transmission pan in a polished finish is a perfect choice. The polished cast aluminum construction not only looks stunning but also offers superior cooling compared to stock-type steel pans. This pan includes a drain plug, bolts, and a gasket for easy installation. It is a well-made and durable option, providing both functionality and aesthetic appeal.

Zinc

Another option available is the TH350 steel transmission pan in a zinc finish. While the zinc finish provides a unique look, it also offers corrosion resistance and durability. This pan is designed as a compatible replacement for Chevy/GM Turbo TH-350 transmissions.

In addition to these colour options, some retailers also offer TH350 transmission pans in a natural steel finish, allowing for a more understated and classic appearance. It's important to note that the availability of certain colours may vary among retailers, and it's always recommended to verify the fitment for your specific vehicle before making a purchase.

Frequently asked questions