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73 340 FIREWALL "HOLE".? #1358804 12/25/12 11:51 AM 12/25/12 11:51 AM
Joined: Oct 2009 Posts: 37 Portland, OR L lawnman77 OP member
lawnman77 OP member L Joined: Oct 2009 Posts: 37 Portland, OR	I AM TRYING TO FIND OUT WHAT GOES IN THE 1/4-1/2" HOLE DIRECTLY TO THE LEFT OF THE OSAC VALVE LOCATED ON THE FIREWALL, NEAR THE PASSENGER SIDE OF THE ENGINE BAY. WE'RE SURE IT IS SOMETHING TO DO WITH VACUUM, BUT NOT SURE JUST HOW SINCE WE DO NOT HAVE THE PART THAT GOES THERE... ANY HELP WOULD BE GREAT!

Re: 73 340 FIREWALL "HOLE".? [Re: lawnman77] #1358805 12/26/12 01:19 AM 12/26/12 01:19 AM
Joined: Jan 2007 Posts: 389 kansas city, mo rave_12000 enthusiast
rave_12000 enthusiast Joined: Jan 2007 Posts: 389 kansas city, mo	need a pic

Re: 73 340 FIREWALL "HOLE".? [Re: lawnman77] #1358806 12/26/12 02:07 PM 12/26/12 02:07 PM
Joined: Oct 2006 Posts: 7,368 Iowa burdar Owen's Dad
burdar Owen's Dad Joined: Oct 2006 Posts: 7,368 Iowa	318 cars used an extra vacuum valve there. 340 cars just had a metal block off plate. Your car must be an earlier built car. Later on in 73, the factory stopped punching that hole in the firewall.

Re: 73 340 FIREWALL "HOLE".? [Re: burdar] #1358807 12/26/12 02:15 PM 12/26/12 02:15 PM
Joined: Oct 2006 Posts: 7,368 Iowa burdar Owen's Dad
burdar Owen's Dad Joined: Oct 2006 Posts: 7,368 Iowa	73 318 with extra vacuum valve...built in Oct 72 Feb built 73 340 car. No hole punched in firewall. 73 340 built in Oct 72. Metal block off plate over hole in firewall.

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