Long-time Mountain Motor engine master Jon Kaase says, “The

Long-time Mountain
Motor engine master
Jon Kaase says, “The
stock Boss 429 was
a masterpiece for
its time, but the
engine was slightly
weak and difficult
to work on. We made
every effort with the
Boss Nine to fix anything
that was troublesome or
failure- prone.”
S TA N D A R D O F F E R I N G S
Kaase Boss Nine engines are built with the finest
components from these manufacturers:
• OEM or Ford Racing SVO cylinder block
• Lunati, Scat forgings or Bryant billet crank
• Lunati, Scat or Oliver steel connecting rods
• Calico coated rod, main and cam bearings
• Comp Cams camshaft
• Crane lifters
• Trend pushrods
• Kaase Boss Nine cylinder heads
• Kaase / W.W. Engineering rocker arms
• Kaase Boss Nine valve covers
• Diamond pistons with H13 wrist pins
• Moroso front or rear sump oil pan
• Kaase oil pump
• MSD cam sync distributor
• Total Seal rings
• ARP fasteners
• Kaase Boss Nine stack intake
• 58mm throttle bodies with FAST XFI ECU, harness, and sensors
• Fel Pro and Flatout gaskets
OPTIONS
Boss Nine engines are dyno tested
and ECU programmed
Also availabe with any of these options:
• 429 to 600 cubic inch
• 450 to 1000 h.p.
• Aluminum cylinder block
• Billet Specialties front drive system
• Sheet metal valve covers
• Billet air filters
• Custom polish, paint and powder coating
Jon Kaase’s latest Boss Nine
design – energized by an
interesting new intake
manifold with a hidden
plenum below and
stack injection above.
Kaase has succeeded in investing
this new stack injected Boss Nine
engine with exceptional torque and
tractability— qualities not usually
associated with stack injection. The
hidden plenum on the underside
of the Boss Nine intake manifold
equalizes the pressures in all
induction tracts and provides the
engine with a clean, consistent idle,
excellent part-throttle performance,
and instantaneous throttle response.
The plenum also maintains brake
vacuum and empowers the MAP
sensor, which has a major influence
on the metering of the fuel.
Hidden plenum provides exceptional torque and tractability
For further information contact:
Cliff Moore, Jon Kaase Racing Engines, Inc.
735 West Winder Ind. Parkway, Winder, GA 30680,
(770) 307-0241 or e-mail: JonKaaseRacing@gmail.com
For latest offerings, visit the Kaase website at: JonKaaseRacingEngines.com