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360 SB RUNNING ROUGH NEW BUILD #1894873 08/18/15 10:36 PM 08/18/15 10:36 PM
Joined: May 2013 Posts: 38 SO ILL K KISSFANN1 OP member
KISSFANN1 OP member K Joined: May 2013 Posts: 38 SO ILL	This is a fresh built engine. All new parts. Less than 1 hour of run time. Broke cam in for over 20 minutes in Jan. Ran great in short time start ups. Then all the sudden it started running rough. While it can run, I pulled spark plug wire # 3,5,2, & 8. The running rough does not change. When the others are pulled, the running changes. What is the correlation between #3,5,2, & 8 timing? I welcome any suggestions to help me thru this crisis. Thanks, SLD

Re: 360 SB RUNNING ROUGH NEW BUILD [Re: KISSFANN1] #1894902 08/18/15 10:53 PM 08/18/15 10:53 PM
Joined: Sep 2007 Posts: 14,889 up yours Supercuda About to go away
Supercuda About to go away Joined: Sep 2007 Posts: 14,889 up yours	intake manifold if it's a dual plane, one side feeds those cylinders. Probably a carb issue. They say there are no such thing as a stupid question. They say there is always the exception that proves the rule. Don't be the exception.

Re: 360 SB RUNNING ROUGH NEW BUILD [Re: KISSFANN1] #1894914 08/18/15 11:03 PM 08/18/15 11:03 PM
Joined: May 2013 Posts: 38 SO ILL K KISSFANN1 OP member
KISSFANN1 OP member K Joined: May 2013 Posts: 38 SO ILL	It is a original 70's model 4 barrel intake. Does that it make it a dual plane? How do I determine that? Thanks, SLD

Re: 360 SB RUNNING ROUGH NEW BUILD [Re: KISSFANN1] #1894935 08/18/15 11:14 PM 08/18/15 11:14 PM
Joined: Aug 2005 Posts: 11,543 chicagoland,usa B buildanother I Live Here
buildanother I Live Here B Joined: Aug 2005 Posts: 11,543 chicagoland,usa	It should be a dual plane. Last mopar 4 bbl intake I saw that was factory single plane was a 273 commando of 67 vintage.

Re: 360 SB RUNNING ROUGH NEW BUILD [Re: KISSFANN1] #1898734 08/24/15 11:52 PM 08/24/15 11:52 PM
Joined: May 2013 Posts: 38 SO ILL K KISSFANN1 OP member
KISSFANN1 OP member K Joined: May 2013 Posts: 38 SO ILL	Supercuda, You were spot on. The float was stuck on the left side of the carb. Quick cleaning and back to running great. Thanks, SLD

Re: 360 SB RUNNING ROUGH NEW BUILD [Re: KISSFANN1] #1898752 08/25/15 12:11 AM 08/25/15 12:11 AM
Joined: Sep 2007 Posts: 14,889 up yours Supercuda About to go away
Supercuda About to go away Joined: Sep 2007 Posts: 14,889 up yours	Glad you found it They say there are no such thing as a stupid question. They say there is always the exception that proves the rule. Don't be the exception.

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