Re: [Amc-list] Super Long Intake Duration Cam ???

[adh@xxxxxxxxxxxxxxxxx (Sandwich Maker)]

" From: Greg Taylor <amundaza@xxxxxxxxx>
" 
" Hey guys,
" I've been reading through the updated/revised book on the Fish
" carburetor I am going to be using on the stroker build.  There was an
" interesting paragraph that briefly discussed how they had some custom
" camshafts ground, which increased the intake duration ½ way through the
" compression stroke, basically making an 8:1 engine act like a 16:1. 

this sounds backwards to me.  if you keep the intake valve open well
into the compression stroke, what you'll get is the piston pushing the
charge back out the intake, making an 8:1 engine act more like 4:1...

i did hear of someone setting engines up like this recently, allowing
the use of astronomical static c/r and theoretically gaining on the
expansion side.

" The torque curve would keep climbing way up past 4,000 RPM and at higher
" RPMs the engine had almost a ram effect to it (self-supercharging).  On
" a 350 motor they did this to, the mileage increased from 16 to 23 MPG
" and the power increase was amazing.  The carb company (somewhat like a
" co-op) had the cams custom ground by either Crane or Comp Cams, I think
" - but since they were more like a co-op, they stopped promoting it
" because they were getting inundated with phone calls asking how to set
" up their engines for such a cam, instead of being able to focus on
" producing the Fish carburetors (from 1983-1996).
"  
" Has anyone ever heard of such a cam setup?  It sounds REALLY interesting
" and promising.  Thanks.

sounds fishy - if you'll pardon the expression - to me.
________________________________________________________________________
Andrew Hay                                  the genius nature
internet rambler                            is to see what all have seen
adh@xxxxxxxxxxxxxxxxx                       and think what none thought

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