7040207 Idle Tubes
Race Director
Joined: Jan 2000
Posts: 12,399
Likes: 247
From: San Jose CA
Tech Contributor
Joined: Aug 1999
Posts: 14,385
Likes: 6,414
From: At my Bar drinking and wrenching in Lafayette Colorado
Brian -
The stock '69-'70 Q-Jet performance carbs that I have measured all check in at .038" including your 7040207. It's common to open these up into the mid-'40s range on performance engines pulling poor manifoild vacuum, so it's common to see them a little bigger than mid-30's.
Lars
The stock '69-'70 Q-Jet performance carbs that I have measured all check in at .038" including your 7040207. It's common to open these up into the mid-'40s range on performance engines pulling poor manifoild vacuum, so it's common to see them a little bigger than mid-30's.
Lars
