421 Blocks (427-489 cu. In.)

Rotating Assemblies & Stroker Kits - 421 Blocks (427-489 cu. In.)

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Butler Performance - Butler Performance 450-457 ci Custom Balanced Rotating Assembly Stroker Kit, for 421 Block, 4.210" str.
Rotating Assemblies & Stroker Kits - 421 Blocks (427-489 cu. In.) - Butler Performance - Butler Performance 450-457 ci Custom Balanced Rotating Assembly Stroker Kit, for 421 Block, 4.210" str.
Butler Performance 450-457 ci Custom Balanced Rotating Assembly Stroker Kit, for 421 Block, 4.210" str.
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Description: New Cast or Forged Crankshaft 4.210" Stroke Choose Desired Bore Size and Ring Type Flat Top, Dome, or Dish Pistons Specify Desired Compression Ratio...More Details »
Item #: BPI-4210-325-421
Condition: New
Icon piston assemblies usually ship in 1-2 weeks Custom piston assemblies ship in 10-12 weeks
Price: $2,549.00


Butler Performance - Butler Performance 453-461 ci Custom Balanced Rotating Assembly Stroker Kit, for 421 Block, 4.250" str.
Rotating Assemblies & Stroker Kits - 421 Blocks (427-489 cu. In.) - Butler Performance - Butler Performance 453-461 ci Custom Balanced Rotating Assembly Stroker Kit, for 421 Block, 4.250" str.
Butler Performance 453-461 ci Custom Balanced Rotating Assembly Stroker Kit, for 421 Block, 4.250" str.
(0) Reviews: Write first review
Description: New Cast or Forged Crank 4.250" Stroke Choose Desired Bore Size and Ring Type Custom Butler/Ross Forged -8cc Flat Top, Custom Dome, or Custom Dish Ross Pistons...More Details »
Item #: BPI-4250-325-421
Condition: New
Custom piston assemblies ship in 10-12 weeks
Price: $2,449.00


Butler Performance - Butler/Ross 461 ci (4.155") Flat Top Balanced Rotating Assembly Stroker Kit, for 421 Block, .062" Over 4.250" str.
Rotating Assemblies & Stroker Kits - 421 Blocks (427-489 cu. In.) - Butler Performance - Butler/Ross 461 ci (4.155") Flat Top Balanced Rotating Assembly Stroker Kit, for 421 Block, .062" Over 4.250" str.
Butler/Ross 461 ci (4.155") Flat Top Balanced Rotating Assembly Stroker Kit, for 421 Block, .062" Over 4.250" str.
(0) Reviews: Write first review
Description: **Must use 1967 and later or aftermarket 14 degree heads for correct valve pocket angles** New Cast or Forged Crank 4.250" Stroke Choose Desired Bore Size and Ring Type...More Details »
Item #: BPI-461-325-421
Condition: New
Usually ships in 1-2 Weeks
Usually ships in 1-2 Weeks
Price: $2,249.00


Butler Performance - Butler Performance 481-489 ci Balanced Rotating Assembly Stroker Kit, for 421 Block, 4.500" str.
Rotating Assemblies & Stroker Kits - 421 Blocks (427-489 cu. In.) - Butler Performance - Butler Performance 481-489 ci Balanced Rotating Assembly Stroker Kit, for 421 Block, 4.500" str.
Butler Performance 481-489 ci Balanced Rotating Assembly Stroker Kit, for 421 Block, 4.500" str.
(0) Reviews: Write first review
Description: New Forged Crank 4.500" Stroke Choose Desired Bore Size and Ring Type Forged Flat Top Ross Pistons, Dish, or Dome Available Specify Desired Compression Ratio...More Details »
Item #: BPI-4500-325-421
Condition: New
Custom piston assemblies ship in 9-10 weeks
Price: $3,149.00


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