I was told i cant run boost with the vac mod on my stage 3 4l60e.

I know trans go makes a delete for it but cant find it.

Anyone know where to get it?

 

You will need transgo part number VBP-VAC. How much boost do you plan on running? The reason I ask is if you plan on running boost in the double digits its not a bad idea to run two of those valves in series. Basically one is a backup for the other in case it can't vent the boost. Normally recommend if you are running 12psi or more. HTH Vince

 

Thanks vince!

I only plan on 7-8psi for now i have a 12 psi pulley but that for when i build a 347,

Also does the trans need to come out?

 

No you do not need to pull the trans. The valve generally is mounted in the vacuum line from the trans where it connects to your vacuum source. In most cases the the line from the trans connects to the brake booster hose on a fbody. At the "T" is where you will want to mount it. The directions from TG are pretty good and easy to follow. Just make sure you follow them and you should be good to go. Vince