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Woodfin · 04-13-2025, 05:10 PM

In the past, I have used the dual ring or the Sonnex upgrade, which supports the servo pin at the cover.

I think the Sonnex upgrade may be unnecessary for 575 - 600 horsepower range.

Let me hear from those of you who build Powerglides for the milder engines. What do you use for the servo?

04-13-2025, 05:10 PM	#1
Woodfin Senior Member Join Date: Sep 2006 Location: Kilgore TX Posts: 540 Likes: 8 Liked 288 Times in 109 Posts	Powerglide servo upgrade In the past, I have used the dual ring or the Sonnex upgrade, which supports the servo pin at the cover. I think the Sonnex upgrade may be unnecessary for 575 - 600 horsepower range. Let me hear from those of you who build Powerglides for the milder engines. What do you use for the servo?