[Steve C.]

" Dave was somewhat unhappy with the results he said it could of been much better is the foundry did a better job of following his design."

I can understand why he might of been disappointed. The port work and plenum work on a production as cast Tomahawk intake is nowhere near my Dave Bisschop modified HSD intake. Example, as mentioned the as cast port exit dimensions were reduced to work on a stock iron intake. That and a difference in the runners. Also one runner as cast is particularly quirky, with different widths, its been quite awhile and I can't remember which one. Others have brought that subject up before.

All this said I can personally say it took quite a bit of work to make my as cast Tomahawk intake to come close my Dave Bisschop modified HSD intake. But after the work both produced similar results on my limited dyno testing.


Also note there have been some slight design changes over the years on the Tomahawk intake depending on the source (and foundry ?)
Note Skips comment in his post above regarding the EFI bosses.

Edit: Post from Skip Fix in 2006 regarding his Tomahawk intake runners....
As in another post the #1 and #2, particularly #1, runners/entrance is much narrower than the rest of the runners, some by almost .250".





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