TRNW-2: question on 6L80 transgo pr valve install

[Steve Everett]

the original Sonnax zip pr valve had you block the orfice and drill through
the passageway,   but the new design Sonnax valve tells you to close the
hole in the passageway if its there ,   so that is what I did  I'll
probably just use a Sonnax valve in this unit, since that is what I'm
comfortable with

   Steve

On Mon, Oct 6, 2025 at 2:52 PM art landeck via trnw2 <trnw2 at trnw.net> wrote:

> only over size valve gets blocked and drilled.
>
> Steve Everett via trnw2 wrote on 10/6/2025 2:40 PM:
>
>  Stupid question probably,  but I'm building a 6L80 stock unit that has
> been built at least twice,  it had a transgo PR valve setup with the boost
> valve with the blowoff spring and ball,   but the lube capsule near the end
> of the PR valve has been blocked with the little bb and crossdrilled like
> you do with the first version Sonnax valve ?  I didn't think you were
> supposed to run it like that with the Transgo valve ?  the unit failed last
> time with this setup in it ,
>
>   I'm thinking I need to use the Sonnax pr valve, but even the new Sonnax
> valve doesn't have you plug and drill anymore ?
>
>    I'm used to either using Sonnax's setup,  or Transgo's setup,  I don't
> like mixing stuff
>
>    Steve
>
>
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