Hot Rod Forum : Hotrodders Bulletin Board - View Single Post - Idle in Park is 1,800 RPM....Idle in gear in 900 RPM...Way too High.
View Single Post
  #9 (permalink)  
Old 09-08-2004, 07:13 PM
coldknock's Avatar
coldknock coldknock is offline
Member
 
Last photo:
Join Date: Feb 2004
Location: Social Circle, Ga.
Age: 43
Posts: 1,531
Wiki Edits: 0

Thanks: 0
Thanked 1 Time in 1 Post
You need a timing light.

Use the timing light and set the initial timing at 10-12 degrees initial. Make sure you do this with the vacuum advance hose disconnected and plugged. Reconnect the vacuum line and set the idle speed to 900rpm.

If your initial timing is too low and you don't know it, you'll be beating your head against the wall trying to make it idle in gear with a decent idle speed in park/neutral.

Unless you have a huge camshaft there's no need to open the secondary butterflies any further than Holley did. Return them to the original position.

Make sure you don't have a vacuum leak anywhere.

Larry

PS, If you have a big lumpy cam and a stock or stock type converter you'll have the same problems because of low vacuum. Not much you can do to fix it but swap the cam or the converter.
Reply With Quote