[1969GiPper]

Just a question on the center carb in the pictures. To me the center carb appears to have a fuel filter and large hex nut in the air horn where the fuel line attaches. Is that correct for a "real" 66 tri-power center carb? I have a 65 set-up and my air horn doesn't have this. Seems odd that GM would have an in-line filter for all three carbs plus an extra filter inside the center carb air horn.

[tom s]

Yes,it is correct.Tom

[Tim Corcoran]

The TH-400 doesn't have linkage for kickdown control. All the TH-400 has is a manifold vacuum line going to the modulator and an electrical kickdown switch that hooks up to the accelerator pedal under the dash.

[b-man]

Some GM cars and trucks equipped with the TH400 use a kickdown switch at the carb, my '70 Chevy C20 has one located there.

Since all auto trans GTO Tri-Power cars had the 2-speed ST-300 which used an electric kickdown switch mounted on the carb it would be easy to use that switch to operate the TH-400 kickdown.

[Robert Williams]

I posted wrong as i was thinking turbo 350 and posted turbo 400. The lokar box is for the turbo 400. My goof...