Goerend Transmission Inc.

05/25/2026

Today we honor those who gave everything for our freedom. We'll be closed today and back to regular business hours tomorrow.

05/22/2026

Win a Goerend torque converter or transmission pan while supporting our local park!
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Our local park, Edmunds’ Park, is raising money to add ADA-accessible equipment so children of all abilities can enjoy more time outdoors. Funds raised will help purchase new ADA (Americans with Disabilities Act) playground equipment and pave the current walking trail to better accommodate wheelchair users.
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See details in comments!
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Some questions coming in on how to enter after you have donated: send the screenshot to [email protected] please!

05/12/2026

Lock-up complaints are often blamed on the torque converter, but real-world diagnostics don’t always point that cleanly in one direction.
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The issue presents as a temperature-dependent lock-up problem. When cold, the converter clutch applies and holds reasonably well. As operating temperature increases around 115°F, lock-up performance begins to degrade. Under light load, the clutch can still be felt engaging, but it lacks holding strength. Under throttle, it slips entirely, with engine RPM rising independently of vehicle speed.
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At face value, this looks like a failing converter clutch. However, testing tells a more complicated story. The converter was checked on a lock-up test fixture using applied air pressure and measured torque resistance. Even at relatively low test pressure, it demonstrated strong holding capacity, well within what would be expected for the application. This suggests the converter is capable of holding torque, at least under static conditions.
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That creates a gap between bench results and real-world behavior. When a converter passes static testing but the transmission slips under load, it points to a system-level issue rather than an immediate component failure. Heat changes fluid viscosity, internal clearances, and sealing effectiveness. Any weakness in the apply circuit, whether inside the converter or elsewhere in the transmission, may only appear under these conditions.
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In cases like this, it becomes important not to jump straight to condemning the converter. The correct next step is verification: either testing under load (dyno) or physically inspecting the converter internals. This kind of problem underscores a broader principle in transmission diagnostics: lock-up slip under heat doesn’t automatically mean the converter is bad. It often indicates that something in the transmission system such as pressure supply, sealing, or internal leakage.
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The takeaway is simple. If a failure only occurs hot and under load, you’re no longer just diagnosing a part, you’re diagnosing the entire transmission system.

05/08/2026

Bolt-together season. 🏁

05/06/2026

Looks like it's going to be another busy day. Thankful for our crew who get these converters built and shipped out, and our customers who keep us busy.

04/30/2026

Our lapping machine is in action today. Every one of our 68RFE valve body spacer plates is finished using a dedicated lapping process to ensure exceptional flatness and surface quality. This step is critical for maintaining proper hydraulic function in high-pressure transmission environments.
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The lapping process uses fine abrasives to produce an ultra-flat, smooth surface that promotes a reliable seal across all mating components. The result is a separator plate that supports proper pressure control, reduces common 68RFE issues, and helps extend overall transmission life.

04/24/2026

It’s that time of year again. April marks our 79th year in business. What began as Ed Goerend’s one-man speed shop in 1947 has grown into an industry-leading manufacturer of torque converters and transmission components.

We’re proud to remain family-owned in an industry where that’s becoming increasingly rare. Along the way, we’ve learned that success is built on trusting good, honest people to do good, honest work. Our dedicated team and loyal customers are the reason we’ve grown into what we are today.

04/15/2026

Appreciate the continued support from New Limit Motorsports! Happy to keep you stocked with a wide range of Chrysler 68RFE, Ford 4R100, and Allison 10L1000 torque converters.

Another pallet of the the worlds best converters and hard parts from Goerend Transmission! One in and one going out.

03/25/2026

Our 68RFE billet aluminum oil pump body half is designed as a superior upgrade that outperforms and outlasts the OEM factory cast unit. It addresse the common failure points of the factory unit such as cracking, scoring, and wear. Its precision measured dimensions are captured using Coordinate Measuring Machine (CMM) technology. This ensures exacting tolerances and perfect fitment for reliable operation and compatibility. DLC (Diamond-Like Carbon) hardened coating is applied to the pump gear pins for exceptional wear resistance, reduced friction, and extended service life, even in demanding applications. Pins are installed directly into the pump half as a complete, ready-to-install assembly.

01/23/2026

Feels like -42° here right now. Can anyone beat it? Post your current temps below, and we might send you something to help stay warm! 🧊