Trans-Go VBP-VAC, is that the correct part number for a turbo 400 with vacuum mod?

[Steve]

I have a Trans-Go VBP-VAC set up for my turbo 400 to prevent boost on the vacuum modulator causing run away line pressure. I want to check and make sure that is the correct one for a 400 since the advertising says its for a 4l60E & 4l80E. Is the VBP-VAC the best way to go for this application? Thanks for the help.

 

[SSedan64]

I don't know why advertising would say for 4L60E & 4L80E since niether Trans have a Vacuum Modulator? It would be the correct part for a TH350 or TH400 tho'.>> Tough Stuff

 

[Steve]

I don't know why advertising would say for 4L60E & 4L80E since niether Trans have a Vacuum Modulator? It would be the correct part for a TH350 or TH400 tho'.>> Tough Stuff

Thanks for the link. I kind a thought that was the case with the 4l60E and 4L80E but I wasn't sure. The link below is the ad that I saw. I even asked them if it worked for the turbo 400 and they said that did not think so!

TRANSGO 4L60E 4L80E VBP-VAC Vacuum/Boost Bypass Kit : eBay Motors (item 260134015182 end time Mar-15-10 16:39:58 PDT)

 

[SSedan64]

I see what they're saying. It will work with 4L60E or 4L80E trans that have been converted to use a Vacuum Modulator with TransGo's part# 46-MOD or 48-MOD.
You can see a Pic of it here in Post #161 also>> http://www.turbobuick.com/forums/transmission-talk/255286-th400-build-pictures-5.html