terry
Well-Known Member
i have a proform 650 with vacumm secondarys it has a high pitch whistle when i floor it. not there under gradual acceleration.very loud only lasts for a split second. any idea's?
TERRY
TERRY
carb whistle
- Thread starter terry
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pastortom1
Well-Known Member
My Holley 650 does the same thing........I use a Torker Intake and a 1/2" insulated riser........don't know if it has anything to do with it.......
ramcharger
Dismember
Vacuum leak either at the base or cracked vacuum hose/vacuum cap. 
On another note, an engine I had built years ago (like over twenty years) had over 20" of vacuum at idle. I was running a Holley 750 with edelbrock triangular foam air cleaner and it would whistle at idle. A lot of people used to ask if I had a blower on it, lol. It had no vacuum leaks whatsoever. I switched the air cleaner out to 14" round 3" tall paper element and the whistle stopped.
On another note, an engine I had built years ago (like over twenty years) had over 20" of vacuum at idle. I was running a Holley 750 with edelbrock triangular foam air cleaner and it would whistle at idle. A lot of people used to ask if I had a blower on it, lol. It had no vacuum leaks whatsoever. I switched the air cleaner out to 14" round 3" tall paper element and the whistle stopped.
wigsplitter74
The Mopar Kid
That's nothing to worry about, it's just hte sound of nearby Chevy's and Ford's shedding a tear 8) LOL
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