67 bigblock
Thread Starter
Instructor
Joined: Aug 2006
Posts: 248
Likes: 0
From: Thorntown IN
Le Mans Master
Joined: Mar 1999
Posts: 5,398
Likes: 985
From: Itasca IL
Port to which distributor advance is connected in stock configuration is PORTED vacuum and will not have signal at idle. Connect vacuum gauge to front RH side of center carb where choke-pulloff is generally connected. This location is manifold vacuum.
My 435 (which is significantly out of tune) pulls steady 14-15" at this location.
Hope this helps.
My 435 (which is significantly out of tune) pulls steady 14-15" at this location.
Hope this helps.
Thread Starter
Instructor
Joined: Aug 2006
Posts: 248
Likes: 0
From: Thorntown IN
Thanks all
Le Mans Master
Joined: Mar 1999
Posts: 5,398
Likes: 985
From: Itasca IL
Sorry if I was not clear enough. The port at the base on the RH side of the carb (perpendicular to crank CL) is PORTED. You will not see a reading there at idle. You will need to connect the gauge to the port where the choke pulloff is connected. Comment above about connecting the distributor advance to this location using a tee is a good one. Makes for a much cooler-running 427.
