Since I recently switched to a Holley carb I was looking at the Sonnex linkage bracket for the TV cable. It looks like the same one Holley offers to bolt on the carb. In the instructions they have down to elongate the upper hole on 200r4 and 700r4 applications. I found a car craft article saying the Holley bracket has the same issues but its not documented in the instructions. Did anyone here use that bracket and elongate the upper hole?


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Here's the sonnax page. It shows the instructions for the 200-R4 with modifications but the 4L60 without.
http://www.sonnax.com/product-lines/...ion/parts/3859

Here's the Car Craft article I found with some pictures.
http://www.carcraft.com/techarticles...g/viewall.html
[QUOTE]TV Cable Update
We were at Art Carr's California Performance Transmission shop the other day when Art mentioned that the classic carburetor TV cable adapter for the 700-R4 and 200-4R transmissions had recently changed. This adapter is used to attach the throttle valve (TV) cable for either the 700-R4 or the 200-4R nonelectronic, four-speed automatic overdrive transmissions. Previously, there were two different brackets used depending on whether the carburetor was a Holley or an Edelbrock. Recently, Art noticed that a new single part number replaced the two separate numbers, and he ran down the basic change. If you look closely at the accompanying photo, there is a small tic mark near the top bolthole for the bracket (arrow 1). If you are using a Holley carburetor, the proper approach is to elongate this mounting hole down to the mark. If you notice, the bottom bolthole (arrow 2) is already elongated. Lowering the upper hole approximately 0.070 inch repositions the bracket and the TV cable pivot point, creating proper cable travel for the Holley carburetor. The bracket is a Holley PN 20-95 that, according to the Holley catalog, is intended for 4160- and 4150-style carburetors. Unfortunately, the instructions currently in the field do not indicate that this modification is necessary. Holley has told us they are aware of the issue and later kits will reflect this change on the instructions. This same bracket can be used without modification on Edelbrock carburetors. This kit is also available through California Performance Transmissions; the PN for Holley carbs is 15599 ($39.99), and the PN for Edelbrock carburetors is 15601, at the same price. If you are considering running one of these TV- cable–style transmissions, these are the correct brackets to use. From Holley, the PN is 20-121 ($25.95 Summit Racing). The bracket that attaches the TV cable mount to the carburetor is Holley PN 20-95 ($20.95, Summit Racing)./QUOTE]

I plan on ordering my 20-121 through Amazon today since I have Prime I should get it Tuesday or Wednesday (free 2 day shipping). I already have the 20-95 I will be switching to.

LOL just noticed on Amazon it says: "This transmission kickdown bracket is used to mount an overdrive transmission's kickdown cable to the carburetor and provides proper transmission fuel pressure".

 

I recently installed one on my 86 with 700r4 and holley.
Nothing mentioned in the instructions about elongating any bolt holes.
It bolted right on and works fine without modifications.