TH400 overdrive unit

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Dec 15, 2008 | 05:08 PM

johnLs1camaro

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From: NA,Indiana/louisville, ky

TH400 overdrive unit

well i have had so many problems with my 4l60e i was looking at putting a TH400 in.. well i drive the car a lot and i was searching and saw they have a overdrive unit that you can put on the tailshaft, they look pretty cool.. i was wondering if anyone else has one, and have you had any problems with it..

Dec 15, 2008 | 05:27 PM

Circle-D

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From: Houston, TX

I would recommend getting a 4L80. You would get OD and a lock up converter and computer controlled. Probably cheaper than a built 400 with the bolt on OD.

Chris

Dec 15, 2008 | 05:38 PM

johnLs1camaro

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From: NA,Indiana/louisville, ky

yeah, i looked at also.. so now what would i have to change on the 98 pcm to make the 4l80 work

i also have a th400 laying around that why i asked

Dec 15, 2008 | 05:48 PM

ChocoTaco369

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From: Philly

A 4L80E would be a lot cheaper as well and you'd go faster. A TH400 and a Gear Vendors Overdrive would consume as much parasitic loss as two transmissions - you'd lose a huge amount of power going that route. That and a GVO is very expensive by itself. The 4L80E would be more efficient, a lot cheaper and just as strong.

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