Pontiac GTO Forum banner

1 - 3 of 3 Posts

·
Registered
Joined
·
1 Posts
Discussion Starter #1
Hello all and Happy New Year . I'm new to the forum and my problem is I rebuilt my 66 tripower using Mike Wasson's Pontiac site and installed it on my 67 automatic,now I can't get idle below 1000. Original vac source was from the Qjet on the center of ventori,not direct manifold vacuum. Traced out possible vac leaks,and found when I clamp off advance hose idle drops? Any body been down this road before,or am I missing something here,possibly dist should be getting ventori vac to work properly and pulling up idle? Any help ,direction is greatly appreciated
 

·
Registered
Joined
·
27 Posts
Make sure the end carburetors are closed completely. Put your hand over their throats, you shouldn't feel any suction. Distributor advance needs to be hooked to a ported vacuum source. Clamping off the vacuum advance should make the idle drop.
 

·
64-67 Expert
Joined
·
8,561 Posts
X2 on making sure the outer carbs are all the way closed at idle. All Pontiacs of this era ran manifold vacuum to the distributor, not ported. Ran a '66 tripower on my '67 for a few years (also a TH400 car) and it ran extremely well. Good luck.
 
1 - 3 of 3 Posts
Top