THE FRENCHTOWN FLYER
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Hi again WW, I just found your build thread. I usually only read the Big Six section so its gone un-noticed to me for months.
Re: the intake plenum:
FoMoCo design guidelines for dry fuel intakes called for the runners to extend into the plenum by about an inch with a bell mouth. Also the plenum should extend about an inch past the end runners for efficient filling. These are little fly-spec improvements to get to an optimum manifold but do not worry if that is not possible with your current design. The improvement would be small.
Yes, the radius could be bigger. Here is a pic of one I fabbed to give you an idea of an entry, and another my friend did using a lower EFI. What I've also done is to use a radius cutter in a router to slowly remove the material.
Re: the intake plenum:
FoMoCo design guidelines for dry fuel intakes called for the runners to extend into the plenum by about an inch with a bell mouth. Also the plenum should extend about an inch past the end runners for efficient filling. These are little fly-spec improvements to get to an optimum manifold but do not worry if that is not possible with your current design. The improvement would be small.
Yes, the radius could be bigger. Here is a pic of one I fabbed to give you an idea of an entry, and another my friend did using a lower EFI. What I've also done is to use a radius cutter in a router to slowly remove the material.