crown 131 into 70 series

[msanson]

On the front of the intake chamber is a large vacum port when i start the engine it is drawing full vacum. Could some one please tell me what it is for and what it would normally be attacthed to

 

[qca]

(ISC)Idle control valve.

 

[msanson]

where dose it normally hook up to

 

[Peewee]

Intake piping, before the throttle body

Can see it here
http://www.oz-enet.com.au/~peewee/eng_conv_2/finished_bay_4.jpg

 

[msanson]

thanks just what i needed to see