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Chevrolet - Fluidampr Performance Harmonic Dampers
     For added vibrational protection for your engine, nothing quite does the job like Fluidampr balancers. Harmonic vibration can be controlled by a vibration damper - which is also called a harmonic damper or erroneously a “harmonic balancer”. The main purpose of a “harmonic damper” is to control harmonic vibration, not necessarily to balance the engine’s rotating assembly.For added vibrational protection for your engine, nothing quite does the job like Fluidampr balancers. Harmonic vibration can be controlled by a vibration damper - which is also called a harmonic damper or erroneously a “harmonic balancer”. The main purpose of a “harmonic damper” is to control harmonic vibration, not necessarily to balance the engine’s rotating assembly.
    A special note about prices on this page: Fluidampr does not allow the prices for their products to be displayed or advertised for less then their Wholesale price. The prices on this page are the Fluidampr Wholesale prices as required by Fluidampr as of 03-08-2006.
We are updating all of our Chevrolet Parts and GM Performance Parts pricings and availability. There is lots of information here regarding your favorite Chevy projects or custom engines.
Updated 04-09-2006.
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Fluidampr Logo
Fluidampr Performance Harmonic Dampers

     Recently Vibratech was split into two companies. Enidine Rail Products got to keep the name Vibratech.
     The new Fluidampr & Streetdampr is called Vibratechtvd. The last three letters of their name stand for Torsional Vibration Damping. Their only product goes on the end of your vehicles crankshaft and uses Viscous Liquid Silicon Technology to damp out the most destructive crankshaft vibrations possible. All of their dampers are being manufactured in Springville, NY, USA in their state of the art ISO 9001 manufacturing facility. Their heavy industry web site address is www.vibratechtvd.com while their performance automotive web site is www.fluidampr.com. We invite you to visit there automotive site for more information on their automotive dampers. You can also get a free downloadable catalog in PDF format from their automotive site.
SFI Accepted, Explosion Proof - Fluidampr is safety tested to 12,500 rpm and meets SFI 18-1 specications.
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Signature Series Logo The Lightest Fluidampr Available
Only 6 Lbs.
     Honda, ford 4.6, and Chevy LS1 will be available early 2004
     The best selling Fluidampr just got better! The new lightweight Fluidampr is available to all drag racers with Chevy power plants.
     Look for the Signature Series icon on the parts listed below Signature Series
     Vibratech succeeded in making Fluidampr lighter without sacrificing damper performance. So, you can rest assured that your engine is protected against destructive harmonic vibration. In fact, the Signature Series Fluidampr is dyno proven to reduce more vibration than the elastomer type damper.
* Quicker ETs
* Faster Top End MPH
* Less Rotating Mass for Faster Acceleration
* Stamped timing marks from 0° to 50°, 90°, 180° & 270° on most Fluidamprs
* Aluminum Housing, Laser Welded
* Hard Anodized
* Provides Maximum Control of Destructive Crankshaft Vibration at All Engine Speeds
CHEVROLET SMALL-BLOCK
Part # Description Material Finish O.D. Wt. RWt.* Price Link
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620101 262-350, 409 CID V8, V6/90°, and all internally balanced custom built large displacement small-block V8s.
Internal Balance
Technical Note: Will not fit 1992 & later LT1’s. A damper retaining crank bolt should be used in all applications. Use GM timing pointer 399 1435 (plain) or 12342000 (chromed).
[Old P/N 712615]
Steel Black Zinc 6-1/4” 7.9 5.3 $267.59 (Pic)
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620103 CHROME Polished Finish - 262-350, 409 CID V8, V6/90°, and all internally balanced custom built large displacement small-block V8s.
Internal Balance
Technical Note: Will not fit 1992 & later LT1’s. A damper retaining crank bolt should be used in all applications. Use GM timing pointer 399 1435 (plain) or 12342000 (chromed).
[Old P/N 715004]
Steel Chrome 6-1/4” 7.9 5.3 $332.19 (Pic)
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630102 Signature Series
262 - 350, 409 CID V8, V6/90°. Internal Balance.
The Lightest SB Chevy Fluidampr Available.
With a Light Weight Aluminum Anodized Housing.
Internal Balance
Technical Note: Will not fit 1992 and later LT1
[Old P/N 716868]
Aluminum Anodized 6-3/8” 5.75 3.94 $369.10 (Pic)
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713347 Damper for hybrid small-block crankshaft with 1.600” diameter big-block snout. All dimensions same as 712615 except O.D. and I.D. of hub. Custom timing cover required. [Discontinued, As of May 10, 2004 Fluidampr had one of these left on their warehouse shelves. Contact them if you are interested in this damper.] N/A N/A 6 1/4” 9.0 6.0 Disc. --
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720101 262-350 CID V8, V6/90°, and all internally balanced, custom built large displacement small block V-8s. Internal Balance
Technical Note: Will not fit 1992 & later LT1’s 194-292 CID Inline Six - slight modification required (machine 1/4” off of the end of the Fluidampr adapter, new pulleys required) [Old P/N 712430]
Steel Black Zinc 7-1/4” 14.0 9.3 $366.33 (Pic)
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720102 Signature Series
LS1 Camaro / Firebird (10% underdrive serpentine pulley)
With a Light Weight Aluminum Anodized Housing.
Internal Balance
Aluminum Anodized 7-1/4” 7.28 5.02 $348.00 (Pic)
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720111 400 CID and all other externally balanced small- block V8s.
External Balance
Technical Note: A damper retaining crank bolt should be used in all applications. Use GM timing pointer 3991436 (plain) or12342011 (chromed) [Old P/N 712465]
Steel Black Zinc 7-1/4” 14.0 9.3 $341.41 (Pic)
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720112 Signature Series
LS1 & LS6 Y Body (10% underdrive serpentine pulley)
With a Light Weight Aluminum Anodized Housing.
Internal Balance
Technical Note: 1979 or 2005 mm belt required.
Aluminum Anodized 7-1/4” 6.87 4.74 $348.00 (Pic)
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740101 LT-1 Camaro and Firebird
LT-1 Fourth generation Camaros and Firebirds can enjoy the benefits of running a Fluidampr. These engines will run smoother and last longer when equipped with a Fluidampr. The LT-1 Fluidampr is 7-½ inches in diameter and is an excellent replacement for stock dampers. Internal Balance
This SFI accepted damper features:
* Black Zinc Chromate Finish
* Stamped Timing Marks From 0° - 50°, 90°, 180°, & 270°
* Manufactured with a high strength steel billet integral hub, with a keyway (replaces the cast iron hub)
* Serpentine belt pulley is machined on the outside diameter of the Fluidampr (drive stock accessories)
This damper is a great addition for any high performance race or street application.
Technical Note: This damper does not fit LT-1 Corvette and Impala applications. [Old P/N 716910]
Steel Black Zinc 7-1/2” 14.0 9.3 $369.10 (Pic)
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740102 Signature Series
350 LS1 Camaro, Firebird.
With a Light Weight Aluminum Housing.
Internal Balance (Standard)
Aluminum Anodized 7-1/2” 7.65 5.27 $348.00 (Pic)
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740112 Signature Series
350 LS1 Corvette.
With a Light Weight Aluminum Housing.
Internal Balance (Standard)
Aluminum Anodized 7-1/2” 7.39 5.09 $348.00 (Pic)
CHEVROLET BIG-BLOCK
Part # Description Material Finish O.D. Wt. RWt.* Price Link
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620111 Lightweight damper for 396-427 CID V8 and all internally balanced big-block V8s.
Internal Balance
Technical Note: See Timing Tab Information below. [Old 713282]
Steel Black Zinc 6-3/4” 9.0 6.0 $304.50 (Pic)
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630112 Signature Series
396 - 427 CID V8
The lightest BBC Fluidampr available.
Warren Johnsons Choice
With a light weight aluminum housing.
Internal Balance.
Technical Note: [Old P/N 716930]
Aluminum Anodized 6-3/8” 6.04 4.22 $398.95 (Pic)
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720121 396-427 CID V8, all internally balanced big-block V8s.
Internal Balance
Technical Note: See Timing Tab Information below. [Old P/N 712440]
Steel Black Zinc 7-1/4” 12.3 8.2 $359.87 (Pic)
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800101 396-427 CID V8, all internally balanced big-block V8s. Use GM timing pointer 3992073 (plain) or 12342001 (chromed).
Internal Balance
Technical Note: See Timing Tab Information below. [Old P/N 712100]
Steel Black Zinc 8” 15.5 10.3 $369.10 (Pic)
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800111 454 & 502 CID V8, all externally balanced big-block V8s. Use GM timing pointer 03992073 (plain) or 12342001 (chromed).
External Balance
Technical Note: See Timing Tab Information below. [Old P/N 712105]
Steel Black Zinc 8” 17.3 11.5 $332.19 (Pic)
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800121 454-502 CID V8 - For supercharger with two 1/4” key slots. NEW!
External Balance
Steel Black Zinc 8” 17.30 -- $382.19 --
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800131 369-427 CID V8 - For supercharger with one 1/4” and one 3/16” key slot. NEW!
Internal Balance
Steel Black Zinc 8” 15.50 -- $404.81 --
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PONTIAC
Part # Description Material Finish O.D. Wt. RWt.* Price Link
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620101 151 CID (2.5L) - 4 cylinder Iron Duke
Internal Balance
Steel Black Zinc 6-1/4” 7.90 -- $267.59 --
650401 326, 350, 389, 400, 421, 428, 455 CID internally balanced engines only. 4-Bolt pulley bolt pattern on 3.300” bolt circle.
Internal Balance
Technical Note: Holes in pulleys must be redrilled. 1969 or later timing cover & pulley may be required on earlier model engines. [Old P/N 715117]
Steel Black Zinc 6-5/8” 10.4 7.0 $398.95 --
OLDSMOBILE
Part # Description Material Finish O.D. Wt. RWt.* Price Link
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650501 350, 400, 403, 425, 455 CID V8 externally balanced engines only.
External Balance
Technical Note: [Old P/N 715168]
Steel Black Zinc 6-5/8” 12.8 8.5 $398.95 --
FORD SMALL-BLOCK
Part # Description Material Finish O.D. Wt. RWt.* Price Link
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630202 Signature Series
Ford Flat Head Wide Belt NEW! This is all the information available from Fluidampr so far.
Aluminum Anodized 6-3/8” 6.90 -- $297.00 --
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650201 Custom built small-block V-8 with internally balanced crankshaft, SVO V-6 3-bolt SVO pulley bolt pattern.
Internal Balance
Technical Note: [Old P/N 712435]
Steel Black Zinc 6-5/8” 10.3 6.9 $396.79 --
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650211 289, 302, 351 W, 351 C, 351 M and 400 CID V-8 externally balanced with 28 oz-in counterweight 4-bolt standard Ford pulley bolt pattern Pulley spacers may be required on some 1975 and later engines.
External Balance
Note: Contact March Performance for pulley suggestions:
MARCH PERFORMANCE, INC. - 6020 HIX RD. - WESTLAND, MI 48185
TEL: (734) 729-9070 - FAX: (734) 729-9075 - EMAIL: [email protected].

We are a Mach warehouse distributor so we can get the pulleys they suggest and add them to your order for this damper.

Technical Note: Not recommended on ’82 and later 302HO-SEE P/N 650221. [Old P/N 713260]
Steel Black Zinc 6-5/8” 12.9 10.4 $359.87 --
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650221 302 HO (5.0 - liter) V-8, 1982-1992, with stock 50 oz-in (34 oz-in counterweight, 16 oz-in on flywheel) 4-bolt standard Ford pulley bolt pattern.
External Balance
Technical Note: Stock pulley will not fit on some 1993 to 1995 engines. [Old P/N 715221]
Steel Black Zinc 6-5/8” 13.7 11.2 $387.56 --
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650231 351 Cleveland / Windsor
Internally Balance NEW!
Steel Black Zinc 6-5/8” 11.1 -- $349.00 --
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650241 302 HO 1982 - 1992
Internal Balance NEW!
Steel Black Zinc 6-5/8” 11.8 -- $375.00 --
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660202 Signature Series
4.6 Liter. 1996 and up.
With a light weight aluminum housing.
Neutral Balance
Aluminum Anodized 6-3/4” 6.00 4.11 $335.00 (Pic)
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690201 Ford 8BA Flat Head V8 (1949 - 1953) Narrow Belt NEW!
Internal Balance
Steel Black Zinc 6” 6.09 4.11 $297.00 (Pic)
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740202 Signature Series
2005 Ford 4.6L Mustang. NEW!
Internal Balance
Aluminum Anodized 7-1/4” 9.04 -- $279.00 --
FORD BIG-BLOCK
Part # Description Material Finish O.D. Wt. RWt.* Price Link
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720201 429-460 CID V-8 4-bolt standard Ford pulley bolt pattern.
Neutral Balance
Technical Note: Crank key modifications may be required on some 429 Boss engines - may need a stepped key, key slot width and length may be different. May be used on 332, 352, 390, 427, 428 "FE" engines when the sleeve between the damper and the timing gear is shortened .500" and a .375" new spacer is added between damper & pulley. [Old P/N 712510]
Steel Black Zinc 7-1/4” 12.2 8.2 $396.79 (Pic)
CHRYSLER
Part # Description Material Finish O.D. Wt. RWt.* Price Link
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720301 318, 340, 360 CID "A/LA" internal balance 6-Bolt evenly spaced pulley bolt pattern.
Internal Balance
Technical Note: Possible pulley misalignment on some years. [Old P/N 712420]
Steel Black Zinc 7-1/4” 12.3 8.2 $387.56 --
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720311 383, 426, 440 CID "B/RB", 426 CID Hemi, internal balance, 6-Bolt evenly spaced pulley bolt pattern. Internal Balance
Technical Note: [Old P/N 712425]
Steel Black Zinc 7-1/4” 11.9 7.9 $378.33 --
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720321 392 Early Hemi with timing marks for aftermarket cover.
Internal Balance
Steel Black Zinc 7-3/4” 9.04 6.02 $339.95 (Pic)
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Please refer to the Fluidampr Installation Instructions for more technical information.
*Note: (RWt.) stands for rotating weight. Fluidampr’s rotating weight is approximately 2/3’s of the total weight at optimum damping because the inertia ring is surrounded by silicone fluid, and can rotate inside the housing. External balanced dampers have a slightly higher RWt. because of the added counterweight mass.

     Today’s high RPM sport compact engines need high performance dampers. Don’t let anyone sell you a pulley to replace a damper. If you do, you might as well buy an extra crank too. All Sport Compact Series Fluidampr® products are SFI accepted products and have a black zinc or anodized finish.
• Not just a pulley, a performance damper
• Steel or aluminum housings
• Available with underdrive pulley’s
• Superior dampening
HONDA
Part # Description Material Finish O.D. Wt. RWt.* Price Link
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590601 All Honda B Series Engines with power steering, air, and alternator pulleys. (Street Series - P/S, Air and Alt. pully.)
Internal Balance
Steel Black Zinc 5-7/8” 7.78 -- $335.40 --
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630602 Signature Series
For all B Series. (Racing series with 40% underdrive serpentine alternator pulley.)
With Lightweight Aluminum Housing.
Internal Balance
Technical Note: Racing series with only an underdrive serpentine alternator pulley.
Aluminum Anodized 6-3/8” 6.30 4.4 $348.00 --
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730602 Signature Series
H22 Series. (Racing series with 30% underdrive serpentine alternator pulley.)
With Lightweight Aluminum Housing.
Internal Balance
Technical Note: Racing series with only an underdrive serpentine alternator pulley.
Aluminum Anodized 7-3/8” 6.82 -- $348.00 --
TOYOTA
Part # Description Material Finish O.D. Wt. RWt.* Price Link
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850802 Signature Series
2JZ I-6 In line 6 cylinder with standard serpentine pulley. (Race Series - No Underdrive)
With Lightweight Aluminum Housing.
Internal Balance
Technical Note: Race Series - No Underdrive
Aluminum Anodized 8-1/2” 5.75 -- $348.00 --
NISSAN
Part # Description Material Finish O.D. Wt. RWt.* Price Link
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640902 Signature Series
350Z V6 with serpentine pulley. (Race Series - No Underdrive)
With Lightweight Aluminum Housing.
Internal Balance
Technical Note: Race Series - No Underdrive
Aluminum Anodized 6-1/2” 7.22 -- $348.00 --
Mitsubishi
Part # Description Material Finish O.D. Wt. RWt.* Price Link
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630702 Signature Series
4G63 I4 with serpentine pulley. (Race Series - No Underdrive)
With Lightweight Aluminum Housing.
Internal Balance
Technical Note: Race Series - No Underdrive
Aluminum Anodized 6-3-8” 5.50 -- $280.00 --
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Please refer to the Fluidampr Installation Instructions for more technical information.
*Note: (RWt.) stands for rotating weight. Fluidampr’s rotating weight is approximately 2/3’s of the total weight at optimum damping because the inertia ring is surrounded by silicone fluid, and can rotate inside the housing. External balanced dampers have a slightly higher RWt. because of the added counterweight mass.

     Performance Diesel series dampers are made to the same standards as Performance series dampers except for the non-SFI versions. The only difference being made for diesel engines instead of gas engines.
PERFORMANCE DIESEL
Part # Description Material Finish O.D. Wt. RWt.* Price Link
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720211 7.3L PowerStroke Ford Trucks with standard serpentine pulley.
External Balance
Steel Black Zinc 7-1/4” 18.0 -- $398.95 --
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870201 6.0L PowerStroke Ford Trucks with standard serpentine pulley.
External Balance
Steel Black Zinc 8-7/8” 20.0 -- $398.95 --
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890101 6.6L DuraMax Chevrolet Trucks with standard serpentine pulley.
External Balance
Steel Black Zinc 8-3/8” 23.0 -- $398.95 --
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890101 6.5L Chevrolet Trucks - 1992-2000 NEW!
External Balance
Steel Black Zinc 8” 18.2 -- $398.95 --
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920301 5.9L Cummins Dodge Trucks 2003 and Up with standard serpentine pulley.
Internal Balance
Steel Black Zinc 9-1/4” 22.9 -- $398.95 --
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960301 5.9L Cummins Dodge Trucks 1998 - 2002 with standard serpentine pulley. 24V
Internal Balance
Steel Black Zinc 9-3/4” 22.8 -- $398.95 --
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960311 5.9L Cummins Dodge Trucks 1992 - 1998 with standard serpentine pulley. Early Dodge 98 12V. NEW!
Internal Balance
Steel Black Zinc 9-3/4” 24.0 -- $398.95 --
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Please refer to the Fluidampr Installation Instructions for more technical information.
*Note: (RWt.) stands for rotating weight. Fluidampr’s rotating weight is approximately 2/3’s of the total weight at optimum damping because the inertia ring is surrounded by silicone fluid, and can rotate inside the housing. External balanced dampers have a slightly higher RWt. because of the added counterweight mass.

Streetdampr Logo Streetdampr Performance Harmonic Dampers
For Street Machines and Street Rods Not Requiring SFI Acceptance
     To meet the needs of performance automotive enthusiasts, Horschel Motorsports offers Streetdampr, a lower cost version of the race proven Fluidampr. It is cost effective to step up from a low performance rubber-type damper to the superior fluid-type Streetdampr.
     Designed as a replacement for the stock damper, Streetdampr utilizes race proven viscous fluid technology to control crankshaft vibration in mild street applications and in racing applications, which do not require an SFI accepted damper.
     Streetdampr is similar in operation when compared to Fluidampr. Streetdampr is shipped uncoated with a rust preventative and should be painted before installation.
Streetdampr Delivers
* Crankshaft Vibration Control and All RPM
* Extended Crankshaft and Bearing Life
* Paintable to Match Your Engine Block Color
* Timing Marks Every 2° from 0° - 40°
* Totally Enclosed Inertia Ring, so Timing Marks Cannot Move
* Smooth, Consistent Performance
* Increased Horsepower and Torque
* No Service or Maintenance
CHEVROLET SMALL-BLOCK
Part # Description Material Finish O.D. Wt. RWt.* Price Link
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670100 Small-Block Chevy. Internal balance. Fits 262-350 CID V8 And V6/90°. Paintable steel finish.
Internal Balance.
Technical Note: Will not fit 1992 and later LT1’s. Stock GM timing tabs can be used. [Old P/N 716242]
Steel None 6-7/8” 10.4 6.9 $198.95 --
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790100 Small-Block Chevy. External balance¹. Fits 400 CID and all other externally balanced Chevy small-block V8s. Paintable steel finish.
External Balance.
Technical Note: Direct replacement for the stock OEM damper. Cannot be rebalanced to match the assembly. [Old P/N 716544]
Steel None 7-3/16” 11.0 8.2 $221.44 --
FORD SMALL-BLOCK
Part # Description Material Finish O.D. Wt. RWt.* Price Link
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620200 Small-Block Ford external balance w/28 oz. ctwt. Fits 289, 302, 351W, 351C, 351M & 400 CID V-8. 4 bolt standard Ford pulley bolt pattern. Paintable steel finish.
External Balance
Technical Note: Pulley spacers may be required on some 1975 & later engines. Custom pulleys may be required on 1969 & earlier engines. Call March Performance for pulleys at (734) 729-9070. Chevrolet sells Mach pulleys. Direct replacement for the stock OEM damper. Cannot be rebalanced to match the assembly. Not recommended on 1982 & later 302 HO. [Old P/N 716540]
Steel None 6-1/4” 11.0 7.8 $239.90 --
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¹Note: P/N 790100 has the same counterweights as the stock OEM dampers. They cannot be rebalanced to match the assembly. Refer to the Streetdampr Installation Instructions
*Note: (RWt.) stands for rotating weight. Fluidampr’s rotating weight is approximately 2/3’s of the total weight at optimum damping because the inertia ring is surrounded by silicone fluid, and can rotate inside the housing. External balanced dampers have a slightly higher RWt. because of the added counterweight mass.

Fluidampr and Streetdampr Replacement Parts.
     Be sure to determine if your current damper has torx flat head tapered back screws or socket head allen cap screws before ordering replacement hubs or damper rings. Torx flat head screws and the related damper rings and hubs are no longer available!
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Part # Description Material Finish O.D. Wt. RWt.* Price Link
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100000 Adapter Counterweight only, replacement hub for 720111 (7 ¼" - New Style w/ 5/16" - 24 UNF socket head cap screws) -- -- -- -- -- $128.23 --
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100001 Adapter only, replacement hub for 800101 (w/ 3/8" - 24 UNF socket head cap screws) -- -- -- -- -- $107.00 --
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100002 Adapter Counterweight only, replacement hub for 800111 (w/ 3/8" - 24 UNF socket head cap screws) -- -- -- -- -- $112.54 --
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100003 Adapter Counterweight only, replacement hub for 650211 -- -- -- -- -- $139.30 --
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100004 Adapter Counterweight only, replacement hub for 650221 -- -- -- -- -- $149.46 --
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100005 Adapter Counterweight only, replacement hub for 650501 -- -- -- -- -- $157.95 --
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100006 Adapter External Balance BB Chevy
One 3/16” and one 1/4” key.
-- -- -- -- -- $148.26 --
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100007 Adapter External Balance SB Chevy
Two 3/16” keys.
-- -- -- -- -- $163.94 --
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100008 Adapter External Balance BB Chevy
Two 1/4” keys (800121)
-- -- -- -- -- $162.54 --
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100009 Adapter External Balance BB Chevy
Two 3/16” keys.
-- -- -- -- -- $148.26 --
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100010 Adapter Internal Balance BB Chevy
Two 3/16” keys.
-- -- -- -- -- $142.71 --
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100011 Adapter Internal Balance BB Chevy
Two 1/4” keys.
-- -- -- -- -- $157.00 --
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100012 Adapter Internal Balance BB Chevy
One 3/16” and one 1/4” key (800131)
-- -- -- -- -- $142.71 --
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100013 Adapter Internal Balance SB Ford (650231) -- -- -- -- -- $132.14 --
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100014 Adapter Internal Balance SB Ford 302 HO (650241) -- -- -- -- -- $142.29 --
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717499 Pulley for 590601 Honda -- -- 4-1/4” -- -- $42.29 --
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200000 Damper ring with timing marks for 800101 & 800111 -- -- 8” 15.1 -- $300.80 --
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200001 Damper Ring with timing marks for 720111 -- -- 7-1/4” 10.9 -- $248.20 --
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200002 Damper ring with timing marks for 650211 & 650221 -- -- 6-5/8” 8.9 -- $277.73 --
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200003 Damper Ring (Oldsmobile) 650501 -- -- 6-5/8” 8.9 -- $279.99 --
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300001 Damper Installation / Removal Tool -- -- -- -- -- $124.99 --

Timing Tab Information
     Chevrolet has used several different timing pointer locations on small-block engines. Some are not compatible with the timing marks on a Fluidampr. Fluidampr timing marks are set up for the timing pointer that is bolted onto the timing cover. For maximum timing accuracy, locate Top Dead Center with a positive piston stop and a degree wheel.
     With 620101 and 620103 dampers, use GM timing pointer number 3991435 (plain) or 12342000 (chromed) and modify if required.
     With 720111 damper, use GM timing pointer number 3991436 (plain) or 12342011 (chromed) and modify if required.
     With big block Chevrolet dampers 800101 and 800111, use GM timing pointer number 3992073 (plain) or 12342001 (chromed) and modify if required.
     Custom Aftermarket timing tabs specially made to be used with Fluidampr are also available from independent suppliers.
Choosing the Right Damper
     Streetdampr or Fluidampr? If your engine is running at high rpm, Fluidampr is the best choice. Fluidampr is also required if your race sanction body requires the use of an SFI accepted damper. If you are replacing your factory stock damper on a mild street or mild race application, the low cost Streetdampr will work just fine.
Choosing the Correct Size Damper
     If damper performance and engine protection is the primary consideration, then choose the larger of the Fluidampr appropriate for your application. Typically, we recommend larger dampers on street and marine applications.
     If weight is the most important consideration or, if you have space limitations, choose the smaller damper available for your application. We usually recommend the smaller dampers for drag racing and oval track racing applications, although they may be used in street applications.
     These dampers have been dyno proven to outperform the comparably sized stock rubber dampers.
How do you tell the difference between external and internally balanced motors?
     On internally balanced engines, there is no counterweight on the damper. The damper is completely neutral (zero) balanced. An externally balanced engine will have an obvious counterweight on the backside of the damper and the flywheel.
Installation Tips
     The correct way to install a damper is to coat the crank snout and the ID of the hub with anti-seize compound and press the damper into place with a proper threaded or hydraulic installation tool.
     Many people are under the false impression that the crankshaft key is supposed to keep a vibration damper in place on the crankshaft snout. This is definitely NOT the case. The key is intended, strictly to position the damper correctly during installation - it is the press fit between the damper Inside Diameter(ID) and crankshaft Outside Diameter (OD) and a Grade 8 bolt properly torqued, that prevents the damper from spinning on the crank. Consequently, the ID of a damper’s should NEVER be honed to provide a slip fit. If a press fit is not maintained, a damper’s effectiveness is minimized because it does not maintain firm contact with the crankshaft.
Exploded View
Silicone Fluid
     The inertia ring inside Fluidampr shears through a thin film of highly viscous silicone fluid to effectively control harmonic vibration at all engine speeds. But what is silicone fluid really like? Well, fluid is somewhat of a misnomer because it is really more like a gel. The silicone fluid used in Fluidampr is clear in color and is more than 45,000 times thicker (more viscous) than 30 weight motor oil.
     Silicone fluid is a very good damping medium because it is relatively unaffected by temperature changes. Thus, it provides consistent damping in both winter and summer. The fluid does not harden or change viscosity if Fluidampr is not used for a period of time. The fluid is so durable that big rig, 18 wheeler truck engines are mostly all equipped with viscous fluid-type dampers.
     Silicone fluid’s damping capability is unmatched. That’s why the fluid inside Fluidampr is guaranteed for as long as you own it.
• Fluid design controls ALL harmonics throughout entire RPM range.
• Increases horsepower through improved valvetrain stability -- crankshaft twisting is reduced so it’s not transmitted to the camshaft
• NO Repair or Maintenance
• Increases crankshaft and main bearing life.
• Explosion proof -- SFI Accepted.
• Accurate, easy-to-read timing marks.