| |
Click on image for the lowdown. 
====
| | | Forums66 Topics128,169 Posts1,057,035 Members48,458 | | Most Online14,466 Apr 26th, 2026 | | AD Chevy Trucks Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
| | THANKS!
For helping keep this great
old truck web site
on the Internet for over 30 years! and not clogged down with Ads! Again, thanks! | | | | Joined: Jan 2015 Posts: 125 Shop Shark | | Shop Shark Joined: Jan 2015 Posts: 125 | If your not running wipers or using this port for vacuum should it be plugged off? Im assuming yes but for tuning and running purposes i want to be sure since engine runs good with port open then bogs when i cap it off.
1964 impala ss 1949 chevy 3100
| | | | | Joined: Aug 2012 Posts: 1,214 Shop Shark | | Shop Shark Joined: Aug 2012 Posts: 1,214 | Yes, if it isn't being used plug it off.
If your engine runs good with it unplugged I HIGHLY suspect you're idle mixture is way too rich.
Dave | | | | | Joined: Jan 2015 Posts: 125 Shop Shark | | Shop Shark Joined: Jan 2015 Posts: 125 | Thanks i thought so and i only have headers on right now so tuning is gonna change again when i get the exhaust installed.
1964 impala ss 1949 chevy 3100
| | |
| |
| |