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-   -   88 3500 TH400 to 4L80? (https://67-72chevytrucks.com/vboard/showthread.php?t=763963)

Terrick down Under 05-17-2018 05:08 AM
88 3500 TH400 to 4L80?
 
G'day everyone, my mate has just picked up a RCLB dually 454 with a TH400. What does he need to put a 4L80, or 4L80E into it?
TIA

Tom 05-17-2018 11:59 AM
Re: 88 3500 TH400 to 4L80?
 
An expensive second trans only computer to control it.

Terrick down Under 05-17-2018 05:26 PM
Re: 88 3500 TH400 to 4L80?
 
Thanks Tom. He just bought it and drove from Melbourne to Canberra and said it used more fuel than his 409 '63. So we are looking to remedy that.
Do you have a link for these trans only computers?

b454rat 05-18-2018 08:45 AM
Re: 88 3500 TH400 to 4L80?
 
I think the prices have come down on those. Somewhere I read around $400 for the controller.

mingoman 05-18-2018 09:10 AM
Re: 88 3500 TH400 to 4L80?
 
http://67-72chevytrucks.com/vboard/s...d.php?t=574800

An old thread, but may have what you're looking for.

Tom 05-18-2018 07:19 PM
Re: 88 3500 TH400 to 4L80?
 
Quote:
Originally Posted by b454rat (Post 8263366)
I think the prices have come down on those. Somewhere I read around $400 for the controller.
That's like half what it used to be. If true that's much more reasonable.
OP- Im sorry I don't have links. I don t use them I just know that's whats required unless the truck had a 4L60e from the factory then the oem computer can be re-programmed to control the 4L80e.


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