The intake gasket on my 84 Bronco, 351W was leaking. So I figured that since I had to take it all apart anyway, why not put a performer on. Big mistake.
I ordered the 4 barrel dual plane with the 2 barrel egr adapter plate. This was offered as a kit, and was supposed to be a direct replacement.
The egr plate had the hole sizes on the wrong backwards, (the egr can only mount one way for clearance reasons). So I had to drill those out to fit, then when I put the stock ford feedback carb on it wouldn't fit either.
The throttle position sensor "notch" cut in the plate was not deep enough.
I had to get my die grinder and take approximately another 1/4 inch out to fit.
Now that I have it all done, I can tell a difference even with the stock two barrel carb. But do not belive them when they say it's a direct replacement.
Dennis

 

what carb do you have? Maybe you they got the parts mixed and sent you the adapter for a different carb.

 

You know, I've swapped out several intakes and they only one that ever had problems was an edelbrock. The valve cover threads were mis-machined on one side to where you couldn't bolt on the valve cover properly.

 

I have an Edelbrock Performer 460 intake #2166 and an Edelbrock Performer carb # 1406 on a 1985 f250 7.5L Dually flatbed. I have had nothing but great performance out of these. I even had to replace a Set-Up Piston in my Carb, which I could not find anyware, and Edelbrock's tech support sent me one for free. They are Good people who stand behind their product. If it did not fit properly at the onset, you should have called their tech support to make sure you had the correct parts.

 

I have used Edelbrock set ups on my 460 and my Jeep 360. Installs were clean and simple from cam, timing gears, intake and carb. I must admit the performance increase on the Jeep was fantastic while on the 460 minor.

 

thats because on that many cubes the dual plane intake is almost restictive if anything for the most part u can go to a midrange single plane intake and lose minimal low end touque