Convert to replaceable idle air bleeds?

DrCharles said

I don't think I have that level of drilling/machining skill...

I'm thinking of just buying a billet primary metering block and tuning the idle, cruise and moderate acceleration... then get a secondary block later (Proform catalog says their block will bolt on to a 2-corner body, although the idle screws won't work). Your thoughts?

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I see nothing wrong with drilling and tapping your blocks unless you want to save them in original form because whatever.

If you want to go four corner, have someone like 68 Hemi convert the throttle plate.
If you want to buy shiny new aluminum throttle plate, find out which ones come with reasonably sized transfer slots. IIRC Jmarkaudio posted that QF are pretty good that way - but don't rely on my memory about that. Some guys have shortened them with a set screw. I think the guy going by Aquartlow on RFS posted pictures when he did that.

The idle ports are the tricky one. That requires a lot more skill and a good setup. removing the throttle plates I suppose makes it a little easier, but I can't call that easy for the hobbiest.