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Harmonic Dampers for Street and Racing.
High Performance Street Models & SFI-Spec
Racing Dampers
Our line of dampers offer features not found with most
other dampers. For example, our small block Ford
dampers are made to the early short length so that '87
and later engines (with the 50 in. oz. damper) can be used
in early chassis or street rods. We offer a line of very
inexpensive spacers to adapt the short damper to later
vehicles and provide the correct accessory belt
alignment. Additionally our small block Ford dampers
have both the three and four bolt pulley patterns on them
as well as three sets of clear, easy to read white timing
marks. Our small block and big block Chrysler dampers
both come with extra bolt-in counterweights that provide
fitment to limited production vehicles that other damper
manufacturers have chosen to completely ignore.
High Performance Street Models & SFI-Spec
Racing Dampers
Our line of dampers offer features not found with most
other dampers. For example, our small block Ford
dampers are made to the early short length so that '87
and later engines (with the 50 in. oz. damper) can be used
in early chassis or street rods. We offer a line of very
inexpensive spacers to adapt the short damper to later
vehicles and provide the correct accessory belt
alignment. Additionally our small block Ford dampers
have both the three and four bolt pulley patterns on them
as well as three sets of clear, easy to read white timing
marks. Our small block and big block Chrysler dampers
both come with extra bolt-in counterweights that provide
fitment to limited production vehicles that other damper
manufacturers have chosen to completely ignore.
80000 PowerForce
90000 PowerForce+Plus
Fits 283/327/350
These two dampers are 6-3/4" in diameter and
approximately 1-1/8" thick. These are our most
popular dampers for internally balanced small
block Chevys. These dampers are dimensionally
identical to the stock G.M. 6-3/4" damper. They
have 60° of easy to read timing marks and
engraved marks every 90 degrees. The
Powerforce high performance street model
weighs approximately 8-1/2 pounds and the
Powerforce+Plus race model weighs 9.3 pounds.
The Powerforce high performance street model is
also available in a polished stainless steel version
suitable for street rods and show vehicles. See
listing at the bottom of this web page for details
on SB Chevy polished stainless dampers.
PP-80000 $48.00
PP-90000 $155.00
90000 PowerForce+Plus
Fits 283/327/350
These two dampers are 6-3/4" in diameter and
approximately 1-1/8" thick. These are our most
popular dampers for internally balanced small
block Chevys. These dampers are dimensionally
identical to the stock G.M. 6-3/4" damper. They
have 60° of easy to read timing marks and
engraved marks every 90 degrees. The
Powerforce high performance street model
weighs approximately 8-1/2 pounds and the
Powerforce+Plus race model weighs 9.3 pounds.
The Powerforce high performance street model is
also available in a polished stainless steel version
suitable for street rods and show vehicles. See
listing at the bottom of this web page for details
on SB Chevy polished stainless dampers.
PP-80000 $48.00
PP-90000 $155.00
80001 PowerForce
90001 PowerForce+Plus
Fits 400 SB Chevy
This unique design damper is for use on
externally balanced small block Chevy
engines. This would typically include 383 and
400 cid assemblies. Only a few damper
manufacturers offer a small 6-3/4" damper for
these engines and those dampers are usually
very expensive. Our models, like all of our
dampers and other products, are very high
quality products at very affordable prices. Note
that although this model damper features a
bolt-in counterweight, the damper cannot be
used without the weight. Due to the windows
cut in the front face of the damper, if the
counterweight is removed, the damper is still
not a neutral balance damper. If you need a
neutral balance 6-3/4" damper, use our 80000
or 90000 models.
PP-80001 $62.00
PP-90001 $175.00
90001 PowerForce+Plus
Fits 400 SB Chevy
This unique design damper is for use on
externally balanced small block Chevy
engines. This would typically include 383 and
400 cid assemblies. Only a few damper
manufacturers offer a small 6-3/4" damper for
these engines and those dampers are usually
very expensive. Our models, like all of our
dampers and other products, are very high
quality products at very affordable prices. Note
that although this model damper features a
bolt-in counterweight, the damper cannot be
used without the weight. Due to the windows
cut in the front face of the damper, if the
counterweight is removed, the damper is still
not a neutral balance damper. If you need a
neutral balance 6-3/4" damper, use our 80000
or 90000 models.
PP-80001 $62.00
PP-90001 $175.00
80002 PowerForce
90002 PowerForce+Plus
Fits 350 SB Chevy
These are both terrific all around high
performance dampers. The 80002 makes a great
damper for high performance street applications,
and the 90002 is the choice for racing when you
want maximum damping to protect the rotating
parts as well as the timing gears, timing chain and
valve train. Optimum damping means your engine
will run as smoothly as possible, and you are
getting accurate valve timing. An improperly
dampened engine can result in premature crank
failure, as well as incorrect valve timing, thus
robbing your engine of power. The Powerforce
street model is very similar to the much more
expensive G.M. Performance malleable iron
8-inch damper except ours is made of stronger
nodular iron with more timing marks.
PP-80002 $65.00
PP-90002 $180.00
90002 PowerForce+Plus
Fits 350 SB Chevy
These are both terrific all around high
performance dampers. The 80002 makes a great
damper for high performance street applications,
and the 90002 is the choice for racing when you
want maximum damping to protect the rotating
parts as well as the timing gears, timing chain and
valve train. Optimum damping means your engine
will run as smoothly as possible, and you are
getting accurate valve timing. An improperly
dampened engine can result in premature crank
failure, as well as incorrect valve timing, thus
robbing your engine of power. The Powerforce
street model is very similar to the much more
expensive G.M. Performance malleable iron
8-inch damper except ours is made of stronger
nodular iron with more timing marks.
PP-80002 $65.00
PP-90002 $180.00
80032 PowerForce
90032 PowerForce+Plus
Fits LS-1 Camaro/Firebird SB Chevy
Our Powerforce and Powerforce+Plus dampers for
the extremely popular LS1 engine represent one
of the best values available in the high
performance industry. These are very high quality
dampers at affordable prices. This damper will
also work on most LS1 based crate engines.
Although not required on a stock engine, our
dampers have a keyway and 60° of timing marks.
These two dampers are dimensionally identical to
the stock O.E. damper, although the Powerforce is
made of tough nodular iron and the
Powerforce+Plus SFI-spec model is made of 1045
steel. Like all Professional Products dampers,
these units feature elastomer construction
between the hub and ring which is bonded for
extra strength.
PP-80032 $87.00
PP-90032 $211.00
90032 PowerForce+Plus
Fits LS-1 Camaro/Firebird SB Chevy
Our Powerforce and Powerforce+Plus dampers for
the extremely popular LS1 engine represent one
of the best values available in the high
performance industry. These are very high quality
dampers at affordable prices. This damper will
also work on most LS1 based crate engines.
Although not required on a stock engine, our
dampers have a keyway and 60° of timing marks.
These two dampers are dimensionally identical to
the stock O.E. damper, although the Powerforce is
made of tough nodular iron and the
Powerforce+Plus SFI-spec model is made of 1045
steel. Like all Professional Products dampers,
these units feature elastomer construction
between the hub and ring which is bonded for
extra strength.
PP-80032 $87.00
PP-90032 $211.00
80033 PowerForce
90033 PowerForce+Plus
Fits LS-1, LS-6 Corvette SB Chevy
These dampers are very similar to the
80032/90032, except they are shorter to fit the
1997-'04 Corvette. Because of this shorter
length, this damper would be a good choice for
engine transplants where front space is at a
premium. However, this would also require the
use of Corvette accessory brackets in order for
the drive belts to line up. Although not
required on a stock engine, these dampers
have a keyway as well as a TDC timing mark
with additional engraved marks every 90
degrees. These extremely high quality dampers
are less expensive than any other LS1 Corvette
damper available. The Powerforce street
damper is made of nodular iron and the
Powerforce+Plus SFI-spec damper is 1045 steel.
PP-80033 $87.00
PP-90033 $211.00
90033 PowerForce+Plus
Fits LS-1, LS-6 Corvette SB Chevy
These dampers are very similar to the
80032/90032, except they are shorter to fit the
1997-'04 Corvette. Because of this shorter
length, this damper would be a good choice for
engine transplants where front space is at a
premium. However, this would also require the
use of Corvette accessory brackets in order for
the drive belts to line up. Although not
required on a stock engine, these dampers
have a keyway as well as a TDC timing mark
with additional engraved marks every 90
degrees. These extremely high quality dampers
are less expensive than any other LS1 Corvette
damper available. The Powerforce street
damper is made of nodular iron and the
Powerforce+Plus SFI-spec damper is 1045 steel.
PP-80033 $87.00
PP-90033 $211.00
80010 PowerForce
90010 PowerForce+Plus
Fits 283/327350 SB Chevy
This is our smallest (6.1" O.D. x .75" thick)
damper for small block Chevys. The high
performance street Powerforce model weighs 5.08
pounds, while the Powerforce+Plus race model
weighs 5.7 pounds. Both models are made of 1045
steel (all other Powerforce dampers are nodular
iron). Keep in mind that the inertia ring weight is
what performs the actual damping of the rotating
assembly. A light weight damper like this will not
achieve the degree of damping that heavier
dampers do. But many racers or performance
enthusiasts want the lightest damper they can get
that will still do the job, and these two dampers fill
that requirement. Both models include 60° of
timing marks with engraved marks every 90
degrees.
PP-80010 $62.00
PP-90010 $176.00
90010 PowerForce+Plus
Fits 283/327350 SB Chevy
This is our smallest (6.1" O.D. x .75" thick)
damper for small block Chevys. The high
performance street Powerforce model weighs 5.08
pounds, while the Powerforce+Plus race model
weighs 5.7 pounds. Both models are made of 1045
steel (all other Powerforce dampers are nodular
iron). Keep in mind that the inertia ring weight is
what performs the actual damping of the rotating
assembly. A light weight damper like this will not
achieve the degree of damping that heavier
dampers do. But many racers or performance
enthusiasts want the lightest damper they can get
that will still do the job, and these two dampers fill
that requirement. Both models include 60° of
timing marks with engraved marks every 90
degrees.
PP-80010 $62.00
PP-90010 $176.00
80003 PowerForce
90003 PowerForce+Plus
Fits 400 SB Chevy
This damper is intended for use on externally
balanced 383 or 400 small block Chevy
engines. They feature a bolt-in counterweight
which can be removed for neutral balance
applications. These dampers are actually
identical to the 80002 and 90002, except they
also include the bolt-in counterweight. Both
dampers have 60° of easy to read timing marks
and engraved marks every 90 degrees. These
are ideal dampers for high performance street
or racing applications, and their somewhat
heavier weight provides maximum damping
characteristics. These dampers, especially the
Powerforce damper for high performance
street applications, are extremely reasonably
priced and yet are very high quality.
PP-80003 $72.00
PP-90003 $189.00
90003 PowerForce+Plus
Fits 400 SB Chevy
This damper is intended for use on externally
balanced 383 or 400 small block Chevy
engines. They feature a bolt-in counterweight
which can be removed for neutral balance
applications. These dampers are actually
identical to the 80002 and 90002, except they
also include the bolt-in counterweight. Both
dampers have 60° of easy to read timing marks
and engraved marks every 90 degrees. These
are ideal dampers for high performance street
or racing applications, and their somewhat
heavier weight provides maximum damping
characteristics. These dampers, especially the
Powerforce damper for high performance
street applications, are extremely reasonably
priced and yet are very high quality.
PP-80003 $72.00
PP-90003 $189.00
80030 PowerForce
90030 PowerForce+Plus
Fits LT-1 G.M. SB Chevy
1993-'97 Camaro/Firebird
1994-'95 Caprice, Impala, and
Roadmaster
These dampers will not fit 1996-'97 LT4
Corvette and Camaro or 1992-'96 LT1 Corvette.
These dampers do fit 1993-'97 LT1 Chevy
Camaro, Pontiac Firebird, 1994-'95 Chevy
Caprice, Impala, and Buick Roadmaster. To
identify an LT4 from an LT1, the LT4 VIN
number has the eighth digit as a "5" and the
LT1 has it as a "P." Both of these dampers
include a high strength steel hub, spacers for
various engine applications and high quality
damper to hub attachment bolts in two
different lengths. It is highly recommended to
use a new factory crankshaft bolt, GM
#12557840. Both dampers have a keyway and a
supplied key plus 60° of timing marks. The
stock damper does not use a key, but the
crank has a keyway in it. For high performance
applications, use of the key is recommended.
PP-80030 $98.00
PP-90030 $230.00
90030 PowerForce+Plus
Fits LT-1 G.M. SB Chevy
1993-'97 Camaro/Firebird
1994-'95 Caprice, Impala, and
Roadmaster
These dampers will not fit 1996-'97 LT4
Corvette and Camaro or 1992-'96 LT1 Corvette.
These dampers do fit 1993-'97 LT1 Chevy
Camaro, Pontiac Firebird, 1994-'95 Chevy
Caprice, Impala, and Buick Roadmaster. To
identify an LT4 from an LT1, the LT4 VIN
number has the eighth digit as a "5" and the
LT1 has it as a "P." Both of these dampers
include a high strength steel hub, spacers for
various engine applications and high quality
damper to hub attachment bolts in two
different lengths. It is highly recommended to
use a new factory crankshaft bolt, GM
#12557840. Both dampers have a keyway and a
supplied key plus 60° of timing marks. The
stock damper does not use a key, but the
crank has a keyway in it. For high performance
applications, use of the key is recommended.
PP-80030 $98.00
PP-90030 $230.00
82000 PowerForce
82001 PowerForce
Fits 283/327/350/400 SB Chevy
Polished Stainless Steel
These dampers are basically the same as our
80000 (350) and 80001 (400) models but made of
fully polished stainless steel. They have one
engraved TDC mark. Intended for street rods,
street machines and show cars these are still high
performance dampers.
Pt. No and Description:
82000 350 Small Block
82001 400 Small Block
PP-82000 $224.00
PP-82001 $232.00
82001 PowerForce
Fits 283/327/350/400 SB Chevy
Polished Stainless Steel
These dampers are basically the same as our
80000 (350) and 80001 (400) models but made of
fully polished stainless steel. They have one
engraved TDC mark. Intended for street rods,
street machines and show cars these are still high
performance dampers.
Pt. No and Description:
82000 350 Small Block
82001 400 Small Block
PP-82000 $224.00
PP-82001 $232.00
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