[southshore30]

Ok, I am getting frustrated trying to get this to work. I ordered a Edelbrock 1/2 thick spacer designed to maintain the dual plane design of the manifold and it still doesn't seal the outer edge of the large secondary bores properly! Only about an 1/8 of a inch on either side or less is still open when I put the spacer down on the intake. The gasket does cover it all the way though, but I can't imagine it would still seal it up. That 2732 flange may but won't it open up the dual plane design? Help me. I may just call Edelbrock and see what they say. What kills me is I bought this intake on a recomendation from a guy at the local speed shop because he said I could run both spread bore and square bore carbs. I now see on Edelbrocks site they make this manifold in a version that is just for square bore and they claim a 5hp increase over the 2101 intake. I still have not even started this motor up although the intake is on it.

[cobalt327]

Originally Posted by southshore30

That 2732 flange may but won't it open up the dual plane design?

The 2732 is thin enough (1/16") that the dual plane design is not compromised. It may require some clearancing if the linkage hits it, etc..

[southshore30]

That small air gap won't affect low RPM effects of the dual plane design? I bet your right, effects would be minimal. I guess I'll try that! Thank you

[cobalt327]

If you look around some, there are some "insulator"-type gaskets that will seal the spreadbore flange, and are fully separated, side to side.

IIRC, they cost a little more than the 2732, but would ease your mind, plus it actually does insulate the carb from the heat of the intake.