Square bore to not so spread bore?

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Bewy said:
I haven't read all the posts....
The Edel carb carb probably has the outer holes drilled. These are the square bore mounting holes. The spread bore mounting holes fit inside the sq bore pattern. Cannot remember if the E carbs have both sets of holes, but they can be drilled if they are missing.
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They do, sir. They are drilled for both patterns.
 
Well that adapter was what I was looking for. I ordered a cheap 10” air cleaner from Summit too. Not a big fan of the plastic adapter that makes it fit a 4 7/32 carb. I’m going to make up an adapter at work out of aluminum. Possibly just make a whole air cleaner depending on how busy we are. There is a ledge sticking out that I’m going to have to grind off too. I’m not sure what carb was intended to be used on these Dutra intakes.
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Glad you got it sorted out. I just wonder why on Earth Doug didn't drill those intakes for both stud patterns? There's certainly enough meat. Weird.
 

IdahoCarson said:
Well that adapter was what I was looking for. I ordered a cheap 10” air cleaner from Summit too. Not a big fan of the plastic adapter that makes it fit a 4 7/32 carb. I’m going to make up an adapter at work out of aluminum. Possibly just make a whole air cleaner depending on how busy we are. There is a ledge sticking out that I’m going to have to grind off too. I’m not sure what carb was intended to be used on these Dutra intakes.
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That is not a 273 AFB, no velocity valve. What are the numbers on the carb? Most all pre 68 MOPAR Carter AFBs use the 4 7/32 openings and narrow bolt pattern. I only run 60 year old carbs without a problem. That one sure looks good.
 
If and when you go the AVS2 route, look for a remanufactured unit from Edelbrock - they are less expensive and work as good or better than the brand new carbs. A word of caution, there are other carb rebuilders that will offer 'remanufactured' units that may be fine but I always go to the factory source when possible.
 
66fs said:
That is not a 273 AFB, no velocity valve. What are the numbers on the carb? Most all pre 68 MOPAR Carter AFBs use the 4 7/32 openings and narrow bolt pattern. I only run 60 year old carbs without a problem. That one sure looks good.
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3855S… it was supposed to be a 4119S. Looks like he sent me the wrong carb.
 
Not all Carter AFBs had velocity valves. Smaller CFM models didn't. So a 'missing' VV does not automatically mean that the carb should have it.
 
Bewy said:
Not all Carter AFBs had velocity valves. Smaller CFM models didn't. So a 'missing' VV does not automatically mean that the carb should have it.
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All 273 AFBs had velocity valves. Dead give away that his carb was not a 273 AFB. Velocity valve secondaries are not the same and you can not add it to a standard AFB that did not come with one.
 
According to the numbers the one he has is for a 426 wedge.
 
RustyRatRod said:
This says 383, 413 and 426.

3855S Carburetor Info Page

www.carburetion.com
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I have a Carter book by original application from back in the day. No doubt that carb would work for any big block as you posted, but they usually had different carbs for auto or manual transmissions. I've learned that most internet info on the web is usually off a bit.
 
66fs said:
I have a Carter book by original application from back in the day. No doubt that carb would work for any big block as you posted, but they usually had different carbs for auto or manual transmissions. I've learned that most internet info on the web is usually off a bit.
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I thought they were a bit more specific too, but the internet is my only resource for that. Either way, I would certainly think the carburetor is way rich for a slant 6.
 
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