The factory S4 intake has long been
recognized as a restriction in 6.4 liter engines. I had wanted to go with one
of Louie Ott's ITB setups for a long time but none
were available. I finally ran across one that had never been used, and
got a really good deal on it, so here I am. I decided to move on from Variocam,
and go with some really hot Simard gun drilled billet cams.
This intake system and cam solution
should yield close to 600HP and 550FT LBS of torque when measured at the rear
tires. Using a typical 15% loss ratio calculated for drive train loss that
would be near 700HP measured at the crank,
This
was the initial mock up The
picture was taken in 2010-2011 time frame.
This was taken in 2019. Before the engine
installation.
This is
after the engine was installed and I’m working through the intake
possibilities.
This
is the very rough airbox that I made from
fiberglass. The goal is to use this to
make a mold and have it finish made in Carbon fiber.
More pics to follow.
Block
Heads & VarioCam
