[96GMC6.5L]

What size holes do I have to drill, and what size taps do I need to do this install?

Thanks, Jacob

 

[gmctd]

First, go over to the trash can, get the instructions out, and read them - the vendor has to spec the pieces before he can buy them, so that will be your best source.

If the garbage truck has already come and gone, go to the manufacturers website, get the required dimensions there...................

 

[96GMC6.5L]

I think the pyro has specs, but the boost gauge came more with the setup to splice it into the vac system rather than tap the plenum, so there is not size specified.

Jacob

 

[gmctd]

You'll need a 1/8" tubing to NPT fitting - that will determine the drill\tap size

Standard NPT sizing is 1/8, 1/4/, 3/8, 1/2" - I used 1/8" stainless stuff

 

[edzzed]

you could also take the tubing into an auto shop and tell them you are drilling and tapping for a boost gauge. they'll set you up with the necessary parts to do the job.

 

[kimagine]

I would not tap into the vac system as you will have problems if the vac system goes down or you get the Turbo Master(it comes with the plug for the vac line for you newer trucks ).

Mark:beerchug:

 

[96GMC6.5L]

I know, I was not planning at putting it into the vac system. What do you mean a plug for the newer trucks?

Thanks, Jacob

 

[edzzed]

plug for the vacuum line otherwise it'll suck air and crap and plug the lines if not suck crap right into the vacuum pump itself

 

[kimagine]

I know, I was not planning at putting it into the vac system. What do you mean a plug for the newer trucks?

Thanks, Jacob

What edezzed said and my truck(and the older ones) don't have the vac system.

Mark:beerchug: