Re: 4L80E - column shift
 

A great video how to use your current shift linkage "stuff", can be seen here:

https://youtu.be/jh7UkYNqVqk

I plan to do this to mine when I get to the 4L80e transmission.

Re: 4L80E - column shift
 

An honest inquiry. Not trying to create a debate. In my situation I have the linkage/geometry adjusted from column to the transmission and the indicator lines up in all of the gears. In my simple mind if was able to line up the indicator in the column the detents are lined up as well. Are you saying that the detents still need to be modified?

Re: 4L80E - column shift
 

I am doing a little guessing here as I haven't measured the indicators myself.
I believe the indicators with the extra gear are embossed into the same space as the three speed automatics. If you just relocated the stock linkage, to fit the 4 speed, it will be off. If you use aftermarket linkage the ratio is adjustable at the transmission shift station lever.
This makes the alignment possible but slightly more difficult shifting as the spacing is so close and the shift effort is slightly higher.
My preference is the stock indicator (1-3). With 1st gear, of the 1-4, off to the right far enough it is barely or not a all visible. If you have the electronic overdirves it really makes little difference as the full throttle shifting rpm is programmable and no reason to shift it yourself.

Others not familiar with the truck's shifting have no issues getting it in gear. Even if the pick first and get second it's not a safety issue. It come down to "Oh you have an overdirve" when they spot the indicator on the column.
Cheers

Re: 4L80E - column shift
 

Shifting is quite easy due to the extended lever on the transmission. Spacing is not close. Same as stock. Again, everything lines up.

Re: 4L80E - column shift
 

Defiantly cannot confirm this, my 87 r10 same as a c-10 has tilt and had a 4l60e and now a 6l80e..I'm picky as a mofo... all gears line up no problems. I know I adjusted the little string thing that connects to the plastic shift column to make it right.
Im using factory 87 tilt column, factory 87 linkages, moved the linkage pivot part 1 hole forward... ill take a picture , but its just a rectangle 3/8 aluminum plate with 3 holes

1st bolt hole goes through aluminum plate and frame
2nd bolt hole goes through stock shift pivot bracket, aluminum plate and frame
3rd bolt hole goes through stock shift pivot bracket and aluminum plate

Re: 4L80E - column shift
 

I was referring to a 67-72 chevy truck column. A 1987 would have had a 700r4, so it already has an overdrive detent in the column. Sure, you can get an older one close, but I have never been able to get the shifter to fall into position like they do with a 3 speed automatic the way they do from the factory.

Re: 4L80E - column shift
 

the only detents in the column are the P-N-R spots. past that its open. I have lokar style straight linkage on my 4l80 in the 71 and it works great. D is were its supposed to be. 1st is just lower down than the indicator.

Re: 4L80E - column shift
 

How did that work out?

Do you have any pictures of your modification? I'm doing an 8L90 in my 84 and so far, it doesn't look like it will work. Appreciate the help.

Rob