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Old 02-01-2009, 11:29 AM
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200 R4 can I build it myself?

Cam bearing failure has taken the $ I had saved for my 200 r4 build so my question for the experts is do you think I can build it myself?

I've built many motors and a few rear ends but never an auto trans. If I get all the parts from someone like CPT and a book or video, can a fairly competent home mechanic like myself pull it off?

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Old 02-01-2009, 03:02 PM
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I looked at doing a 700-R4 myself and, while the process is straightforward, there are a few special tools that need to be used. I have seen a few home-made versions of these tools, so it is possible to make them and do the job yourself.

Still, I made the decision to pay roughly $2K for a pro to do it because 1) the transmission was damaged to begin with and 2) it would take a lot of time to fabricate the tools and do the work.

While I paid $$, I now have a transmission that was re-built and inspected by a professional who's done hundreds of these (he's also the local Allison Transmission authorized repair shop) and carries a warranty. Automatic transmissions and A/C compressors are the last two car parts that I have not tried to re-build.
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Old 02-01-2009, 04:56 PM
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It can be done. You don't need a lot of special tools but, I would recommend 2, a Low/Reverse Clutch Removal/Install Tool and a Clutch Spring Compressor.
An ATSG Manual & GM Principles of Operation Manual is very useful too. CKPerformance sells a 200pg. Tech Manual that shows all the tips for modifying/upgrading, building etc..

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