I recently converted my car from manual brakes to power. They work, but I don't get the kind of assist I would like, so I got the vacuum gauge out and took some measurements. I barely get 10 inches of mercury at idle (the spec I think is something like 17). My engine is a 327 out of a 1967 Corvette. A previous owner added a Edelbrock performer series intake and 650 cfm carb. Judging from the idle, I doubt very much that the car has any kind of radical cam in it.
Using my vacuum gauge, I systematically went around the carb and the intake individually pulling hoses and blocking that port, looking for leaks. I still get about 10 inches (unsteady). I then tried the trick of spraying carb cleaner around the base of the carb, and the runners on the intake looking for a change in operation. I didn't see any. A friend told me to check the idle screws. When I tried that, I found that I could slow the idle speed if they were near closed, but once opened up a bit I get the same basic idle speed (and vacuum) over a very wide range of adjustment. I was actually afraid the screw would come out. This has morphed from being a brake issue to being a "is my engine OK" issue. What has me a bit confused is that the stinking thing runs pretty well. I seem to have lots of power, and the idle is reasonably smooth. It'll idle in the driveway all day and not stall. Does anybody have any ideas. I want to paint this car, and want all the mechanical issues taken care of before then. If I need to pull the heads, now is the time. Gary _______________________________________________ Chevelle-list mailing list [EMAIL PROTECTED] http://chevelles.net/mailman/listinfo/chevelle-list_chevelles.net
