Carburetor question
Thread Starter
Instructor
Joined: Sep 2018
Posts: 165
Likes: 64
From: Lakeville MN
Carburetor question
I have a 79 which had a summit racing M2008 4 barrel when I bought it. I recently switched to a Edelbrock 1406. So everything is good but the Edelbrock seems to have a hard time coming down from high idle when the engine is cold. I used to give a very slight tap to the gas peddle on the old carb during warm summer months and it would come right down to normal idle, is there an adjustment I missed? And also, although it runs very smooth it doesn't seem to have the power it used to with the old summit carb. Thanks in advance for the help.
Race Director
Joined: May 2006
Posts: 18,735
Likes: 2,582
The M2008 is a series of three different carburetors, 500, 600, and 750 CFM.
The 1406 is 600 CFM so if you had a 750 that would explain the power difference.
Did you reread the instructions for the 1406 concerning choke and fast idle?
The 1406 is 600 CFM so if you had a 750 that would explain the power difference.
Did you reread the instructions for the 1406 concerning choke and fast idle?
Last edited by MelWff; Jul 23, 2021 at 08:46 PM.
Dr. Detroit
Joined: Mar 2012
Posts: 10,097
Likes: 4,027
From: New Braunfels Texas
So why did you take the Summit (Holley 4010) carb off? The Summit/Holley carb is a much more forgivable piece IMHO.
Bolting a carb on and expecting it to run better is not how things happen.....all carbs must be adjusted and dialed in for an application......
What intake setup are you running?
Jebby
Bolting a carb on and expecting it to run better is not how things happen.....all carbs must be adjusted and dialed in for an application......
What intake setup are you running?
Jebby
Last edited by Jebbysan; Jul 26, 2021 at 08:00 AM.
