American Motorcycle Dealer AMD 246 January 2020 | Page 47
PowerHouse Dyno Proven
Cams for Big Twin Evo
Available in six grind/lift configurations for a versatile
range of applications whether using hydraulic or solid
lifters, these PowerHouse brand cams from
Hazelwood, Missouri based Mid-USA Motorcycle
Parts are "dyno proven for maximum performance -
from bolt-in, for more all-around performance and
touring, to .620" lift for those ground-pounding street
and strip machines."
Available bolt-in with stock .500" lift for hydraulic
lifters, the OE replacement PowerHouse cam is said to
deliver "excellent mid-range performance with stock
or ported heads. Low end power is not sacrificed for
heavy two-up riding and they provide more snap
throughout entire rpm range. They pull surprisingly hard
with stock heads to about 5,600 rpm and are easy to
tune for all types of carburetors and exhaust systems."
For hydraulic or solid lifters and recommended for use
with performance valve springs, PowerHouse .530"
lift cams are said to be an "excellent cam for 80 ci
9:1/10:1 compression and work well with stock or
ported heads. The ideal performance cam for lighter
Big Twins (FX and FXR type) wanting a good mid-
range with fairly strong top end reworked carburetor
jetting with a performance exhaust and ignition
liberate the potential of the .530" PowerHouse cam."
For hydraulic or solid lifters, and definitely requiring
performance valve springs, the PowerHouse .560" is
said to be the best cam in the range for higher
compression 80 ci 9:1/11:1 applications and for
www.AMDchampionship.com
.500"
strokers up to 96 ci that want lots of torque. "For use
with stock or ported heads, they should only be used
with performance exhaust, carburetion and ignition.
They have a very strong mid-range with the ability to
pull very hard up to about 6,500 rpm, depending on
cylinder head air flow."
For hydraulic or solid lifters, the PowerHouse .565" is
said to be a hotter version of the popular viper cam and
has a sophisticated profile fast intake ramp with slower
closing ramp for maximum cylinder fill. Requiring
springs with a minimum of 175/190 lbs. seat pressure,
it is described as a "perfect combination with high
compression 10:1 plus compression for 80 ci and small
strokers. It provides very strong upper mid-range, with
6,500 rpm top end power. For use with mild to wild
ported heads, good free flowing exhaust, performance
carb and ignition, dig in for the ride of your life."
Also for hydraulic or solid lifters and performance valve
springs, ported heads are recommended for the .595",
and solid lifters should be run to prevent damage from
valve float if the application is going to exceed 7,000
rpm. The valve spring pressure should be minimum 180
lbs. seat pressure, and high compression 80 ci 11:1
compression engines "will really turn on with the
.595" PowerHouse cam. This cam makes power from
mid-range to extremely high rpm and is a hot set-up
for 88 ci/98 ci street strokers and a killer cam for street
strokers up to 103 ci below 10:5 compression."
Finally, and for solid lifters only, the sophisticated profile
PowerHouse cam options -
from .500" to .620" lift
.620"
fast intake ramp and slower closing ramp for maximum
cylinder fill of the PowerHouse .620" require a spring
with a minimum of 190 lbs. seat pressure. "The best
choice for 115 ci/140 ci 10:1 plus compression super
big inch monster motors, it also works well with high
compression 11:1 compression small stroker 88 ci/98
ci REV monsters, but doesn't start kicking until you're
over 4,500 rpm - great for street use and occasional
trips to the local track."
MID-USA
Hazelwood, Missouri, USA
US toll free: 800 527 0501
Canada: 800 893 9261
www.mid-usa.com
www.mid-usa.ca
AMERICAN MOTORCYCLE DEALER - JANUARY 2020
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