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I'm building a fairly radical 340 for my 68 Dart, IT'S JUST ABOUT DOWN TO THE INTAKE. I have a eldebrock tunnel ram that I'm thinking using, I'll probably run a pair of600-650 holleys, but what should I baseline jet them at?Or would a single carb and a single plane be better?
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Hey Gearhed how radical?I run a 800dp Holley on my t-rammed 10.5 alum headed 360,it could use a little more cfm,I think that 1000 cfm will be perfect for a radical combo,2 500 edelbrocks would be my choice although I wouldnt kick 2 500 cfm 2bbl holleys off my t-ram,600 vac secondaries will work too but I wouldnt use 2 650dp's,for the 600 vac secs youll want near stock jetting,1850's have #64 in the primaries that should be near ideal as well the secondary jet plates,you can modify the plates so as to take an actual jet too,be sure to get a sec vaccum balance kit,this contains sec vac pod lids with a port to connect the 2 so that they come in together,power valves will be rated too high,depending on your combo Id start with 5.5 or 6.5's.Have fun....PRO..
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