Richard B Posted December 7, 2006 Share Posted December 7, 2006 Sorry Steve that's a problem with PI's and 6-3-1 extractors. I don't think the singe spindle is an option, although Dave Vizzard did talk about a single butterfly on the plenum chamber. I bought a Revington TR linkage for mine but have a linkage from Malcom (Prestige) ready for the next 6-3-1.Some people fit the later inlet manifolds, but I think they ar emore trouble thanthey're worth. You need an alighnment jig to fit them to the head. Link to comment Share on other sites More sharing options...
JohnD Posted December 7, 2006 Share Posted December 7, 2006 Nick Jones has a single butterfly on his EFI plenum.You there, Nick?I think that with a single 'fly you need a MUCH bigger plenum, to even out the flows, esp. to the intakes at the oppposite end. Or, put the single 'fly in the middle - big pancake filter? I've got a hemi, me!John Link to comment Share on other sites More sharing options...
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