WANTED 68 throttle kick down linkage 4brl

[Mike McGuire]

Hello,

I'm looking for the intake manifold mounted transmission kick-down linkage for a 68 H-code (4 barrel carb) Newport. I'm not sure I have the correct description, but this is the part that has a shaft from the carb, and pivots over the engine to work the transmission kick down (throttle pressure) level.

I'm uncertain if this is Newport specific.

Thanks in advance.

Mike

 

[fury fan]

Be aware, there are several different setups for mid-late 60s bigblock KD linkage, and a mix-match set can cause a bunch of grief.

On my avatar car I could never really hear my secondaries opening.
Never could get a good adjustment of full throttle + proper shifting. I pushed the KD linkage to full-throttle and adjusted teh slider at the carb to hit FT there, but it never drove like it was correct even with repeated fiddling. But I had a 318 throttle cable and a modified bracket on my intake manifold to align the cable to teh carb shaft (due to an aluminum intake) so I figured it was a problem I created for myself during the engine swap years before. I hate 1-2 shifts at 10mph so I adjusted for proper shifting and drove around as a 440 2-barrel.

Last year, as I was going thru my box of loose KD pieces to mock up a 3-piece setup on a loose 383/AT, I made a discovery.

For the vertical rod at the rear of the engine, I had rods of 2 different lengths, and 1 rod clearly did not allow proper adjustment (and this was with a stock intake and no throttle cable) but the other did. So I visited teh car, removed its rod, compared, and swapped the other length in. Did an adjustment with the new-length rod, and I got proper shifting AND the last 10% of my throttle travel.

I say 10% because the car felt like it gained ~30hp or so. Very noticeable. Was satisfying to reflect upon how well it ran as a 440-2, but the 440-4 was eye-opening.

 

[Mike McGuire]

Thanks. agreed. I had to engineer/mickey mouse a solution for my 383 6-pack Newport. They didn't make too many stock 6-pack kick down linkages for 383 Newports (albeit probably many B bodies might be similar).