Auto or 6 speed??? - Toyota Supra Forums

07-25-2006, 09:35 AM

pwpanas

Supra Owner

Join Date: Oct 2005

Location: GA, USA

Posts: 2,209

Quote:

Originally Posted by 2JZEFINI-17

How much horsepower can the automatic handle without being under any real stress? I know that the gatreg 6 speed can handle well over 1000...

The auto can handle 500rwhp or so before it starts slipping. There are a few companies that offer to rebuild the internals, but that'll only get it up to about 650rwhp or so reliably (depending on exactly how hard you drive, the tires you're running, etc.). Most Mkiv owners that are 700rwhp+ with an auto swap to a TH400..

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