carb probs
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Junior User
Joined: Jan 2004
Posts: 72
Likes: 0
From: Washington
carb probs
Hi all,
I am new to this site, and am excited to find it. I have a 56 that I have had for about 15 years with continual carb problems. It has a original V8 (272?) but with a 56 4 barrel manifold. I currently am on my 3rd carb, a new edlbrock 500 cfm with manual choke and it still runs way too rich. I've checked for vacuum leaks (none), timing (ok at 10 degrees), and it has a new diaphram on the distributor. I have the original 2 bbl manifold (3 bolt setup) and I'm thinking of changing unless I can get some help.
Thank you to all for listening.
I am new to this site, and am excited to find it. I have a 56 that I have had for about 15 years with continual carb problems. It has a original V8 (272?) but with a 56 4 barrel manifold. I currently am on my 3rd carb, a new edlbrock 500 cfm with manual choke and it still runs way too rich. I've checked for vacuum leaks (none), timing (ok at 10 degrees), and it has a new diaphram on the distributor. I have the original 2 bbl manifold (3 bolt setup) and I'm thinking of changing unless I can get some help.
Thank you to all for listening.
Senior User
Joined: Jan 2004
Posts: 265
Likes: 0
From: Lancaster CA
Others out here are going to know better than me as I have a 302. But I think you may have too big of a 4 barrel on there as I know that a 302 is usually recomended to have a 500. Personally I run a 600 double pumper but I also have some performance parts and a small amount of porting is soon to come. I think you should be able to rejet the edelbrock but cant be sure. First bet is to downsize first I think as the two barrel usually isnt even as good on gas as a four barrel if you dont always keep a heavy foot.
Logistics Pro
Joined: Oct 2002
Posts: 4,489
Likes: 5
From: Valley Center, CA
Ok, when you say it runs too rich, what are the simptoms? What is the color of the plugs? Have you checked the vacuum? How about your fuel pressure? All of these things are needed to decide on new metering rods, and springs. Note: if you are running too high of fuel pressure it could make it go rich or even spill out onto the motor. I went through all of this last year. The fixes are easy, but you need to know where you stand before you start putting in new parts. John
