Engine Parts 8 Cyl -
Power Force Balancers

Powerforce
Damper High Performance Street
High Performance Street Dampers are made from extremely tough modular iron. Suitable for all street applications & can be revved as high as 6500rpm. These dampers are of the highest quality & are precision machined to tighter tolerances than OEM. They come with a gloss black paint finish & white timing marks for easier reading. Externally balanced dampers feature bolt-in counterweights that are precision balanced. All Ford Dampers have three sets of timing marks to cover nearly every small block application. Ford Dampers have both 3 & 4 bolt accessory bolt patterns.
Part No Application Size
PRO-80000 SB Chev (Int) 6 3/4”
PRO-80001 SB Chev 400 (Ex) 6 3/4”
PRO-80002 SB Chev 350 (Int) 8”
PRO-80003 SB Chev 400 (Ex) 8”
PRO-80004 BB Chev 396-427 (Int) 8”
PRO-80005 BB Chev 454 (Ex) 8”
PRO-80006 SB Ford Early (28.4oz.in.) 6.4”
PRO-80007 SB Ford 1981 Up (50oz.in.) 6.4”
PRO-81006 Spacer SB Ford to 1979 351W -
PRO-81007 Spacer SB Ford 1980 & Later -
Powerforce+Plus
Damper High Performance Race
High Performance Race Dampers are made from bulletproof 1045 steel. Can be revved to over 10,000rpm. Optimum damping occurs in 6500-7500rpm range. The machine work on these dampers is second to none & the critical fit tolerances & balance are held more closely than OEM. All externally balanced dampers have bolt-in counterweights. This feature allows for swapping weights between dampers (Ford) or adding them to internally balanced dampers (Chevy) if you change applications. You cannot buy a more accurately balanced harmonic damper than these.
Part No Application Size
PRO-90000 350 Chev (Int) 6 3/4”
PRO-90001 SB Chev 400 (Ex) 6 3/4”
PRO-90002 350 Chev (Int) 8”
PRO-90003 400 Chev (Ex) 8”
PRO-90004 396-427 Chev (Int) 8”
PRO-90005 454-502 Chev (Ex) 8”
PRO-90006 Early Ford SB (28.4oz.in.) 6.4”
PRO-90007 81 Up 5.0L Ford (50oz.in.) 6.4”
PRO-81006 Spacer SB Ford to 1979 351W -
PRO-81007 Spacer SB Ford 1980 & Later -
Powerforce
Damper SB Chevy Superlight
The new Powerforce Superlight Damper for Small Block Chev weighs only 6.4lb & features a .75” wide inertia ring. Made of 1045 steel, the lightweight damper is of fully bonded construction with timing marks every 90°, as well as 60° of initial timing marks. This damper is primarily intended for racing applications where light rotating weight is desired with nominal damping. 10,000rpm recommended limit.
This is not an SFI-spec harmonic damper.
Part No Application
PRO-80010 SB Chevy 350 Superlight 6.4lbs
Powerforce
Balance Spacer

Part No Application
PRO-81006 Harmonic Damper Spacer for Ford early to 79 .350" thick
PRO-81007 Harmonic Damper Spacer for Ford 80 up .950" thick
PRO-81008 Harmonic Damper Spacer for Ford .875" thick
Professional Products
SB Chevy Stud Girdle Kits
Precision cast aluminium bars. 23% lighter than solid bars, yet 20% stiffer due to their unique “I” Beam design. Includes adjuster nuts.
Part No Application Size
PRO-12375 SB Chevy V8 Stud Girdle Kit 3/8”
PRO-12437 SB Chevy V8 Stud Girdle Kit 7/16”
PRO-12381 Replacement Adjuster Nuts 3/8”
PRO-12382 Replacement Adjuster Nuts 7/16”
NA
Damper Service Items
Part No Application
PRO-91003 Counterweight for SB Chev 400
PRO-91005 Counterweight for BB Chev 454
PRO-91006 Counterweight for Early SB Ford
PRO-91007 Counterweight for Late SB Ford
NA
Service Items & Miscellaneous Accessories
Part No Application
MANIFOLD SERVICE ITEMS
PRO-52110 Adapter Bushings Set of 4 To Fit Late Model 1987-95 Heads
PRO-52111 Adapter Plate & Gasket To Adapt Square Bore Carb to Spread Bore Manifold
PRO-52112 Manifold Bushings Straight (set 4)
PRO-52115 EGR Adaptor (for 52008/52009)
PRO-52125 Throttle, Cruise Control & Transmission KD Bracket Assy. Stainless Steel
PRO-52126 PRO-52111 Throttle, Cruise Control & Transmission KD Bracket Assy. Steel
PRO-52210 Water Divider Baffle For 52030/52031
PRO-54100 Phenolic Spacer 1/2" for 54126/54127 Manifold
PRO-54151 Elbow Adapter for 94/95 Mustang
PRO-54152 EGR Adaptor for 94/95 Mustang
PRO-54160 Gasket Set for 54124/54125 Viper Plenum