Intake tap sizes

'87 Turbo "T"

What a complete shitshow!!
TurboBuick.Com Supporter!
Hey guys I know this has been done a handful of times, winter is here, & I want to get rid of the vacuum lines & block.

Does anyone remember the drill & tap sizes for the vacuum lines & the for vacuum brakes?

I’ve seen that. Honestly it’s easy enough for me to do & total disclosure a shit-ton cheaper for me to do it.

Two bits, two taps(hopefully), & some barbed brass fittings, & done. Less than $75.