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All the popular VB kits dual feed a TH350 as far as I know, but only TransGo does it on a 400 without internal mods.
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Also to add to what Steve said, TCI does also have a good kit for TH350s and 400s. This is highly recommended in performance or towing applications. Also order a filter and a good Th350 gasket (part number ends with D I think). Similar to a corvette servo upgrade, this may help prolong your transmission’s lifespan by reducing the amount of slip between shifts. Properly installed shift kits will make all shifts more firm and quick without making it feel like you got hit by a train. What Does A Shift Kit Do For A 4l60e?Īdding a shift kit to your 4l60e equipped car, truck, or SUV will help correct and improve the lazy shifting that the 4l60e is somewhat known for in factory form. I keep saying Im going to make a tool for that, Ive made the rest of the tools I use for Glides. For me, the most difficult part of rebuilding a Glide, is getting the speedometer drive gear off the tail shaft. While this can be achieved if you desired, the fact of the matter is that a shift kit in your 4l60e will not only benefit you, but improve the way the transmission works. I use the TransGo shift kits in the transmissions I do, unless its for a transbrake equipped Glide. The results are firmer shifts and reduced. This will be going on a 304 on my CJ, so idle torque is crutial. What do shift kits do Why do they make the transmission shift harder Shift kits simply eliminate many of the restrictive oil flow problems in the transmission’s valve body. So, why is this cam highly recommended What are good applications for this cam I am about to order an Edel Performer cam, but I read on this board teh Summit one is very good. Performance shift options without sacrificing durability. Shift Kits are engineered to restore hydraulic integrity with easy-to-install and cost-effective solutions. When most people think of installing a shift kit, they have the notion that their car will have violent and jarring shifts. Summit Racing put together a chart with the dimensions of popular GM, Ford, and Chrysler automatic transmissions. TransGo Shift Kits include everything you need to address the most common transmission driveability complaints and failures in one box. A shift kit is a great way to improve the performance of your 4l60e transmission, but there are a number of things to consider before installing one. In TransGo lingo: Reprogramming Kit is what they call their High Performance Shift Kit its now also known as the Heavy Duty, or HD, shift kit.