4L80E adapter for Pontiac....

[Jagarang]

Thanks Ralph. I'll call them to clarify a few questions I have regarding their product.



I should mention that I'm using a factory hood tach and indash speedo and full factory gauge package. The Abbott part seems geared toward late model aftermarket gauges, but that's one of the things I need to talk to them about.

[Steve Chryssos]

No. I don't think you want to swap out that tailshaft. Unless I'm missing something about this TH400 tailshaft conversion, you need that VSS sensor to run your transmission controller as well as your speedo. The TCU gets tailshaft speed from the VSS and calculates that speed in conjunction with final gear ratio and tire diameter to arrive at driven wheel speed..

What do you have for a speedo? An electromechanical converter is the way to go. Or just get an electric speedo.

[Jagarang]

I have a full factory 1969 Pontiac Firebird Rally gauge package. They are all original except for a complete restoration.
I need to figure out how to drive my factory tach and speedo with your "Shrifter" and a tanny controller from an aftermarket source(of your recommendation/prefference hopefully).
Frank may call you in the near future if he hasn't allready. We just recieved my console and dash back from fabrication and are ready to begin installation soon. We have an LCD shift indicator mounted in the console which we will need to incorporated into the system to indicate gear selection. It is of the same type and make as most of the aftermarket LCD shift indicators.
I believe Frank would also like to pick your brain regarding tunnel mods needed to install the 4L80E in the first gen. F-Body.

What are your thoughts?

Thanks

[Steve Chryssos]

Yeah Frank and I went back and forth on tunnel mods today. Clearance should not be a problem other than in trans cooler line area (pass side of trans tunnel).
The TCU definitely needs tailshaft speed to function properly, so unless this tail swap has dual functions (mechanical and VSS sensor) you will want to go with a converter. I have a customer who raves about the abbott unit.
I'll get with Frank and zero in on the right controller for your application. Is your car NA or blown?

[EFI69Cam]

The abbott box is what you want. You hook up power, vss then attach the speedo cable to the back of your stock speedometer.

TCI sells this product also.

This is what I use in my 69 Camaro with my electronic output only t56.