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KB Hyper Performance Piston Kit, KB257KTM.060
$455.99
MSRP: $505.59
You Save: $49.60 (10 %)
Ships directly from manufacturer.
Part Number: 807503
Brand: UEM Pistons
Manufacturer Part No: KB257KTM.060
Superior Quality Parts: Heavy Duty Pros parts meet and exceed the OEM quality specifications.
Fast Shipping: We ship from warehouses across the US to ensure the quickest delivery.
Expert Technical Advice: Industry repair technicians are standing by to provide expert advice for your repair.
Huge Savings: We offer competitive online pricing for significant savings.
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Product Details & Specifications
1 Set KB257.060/1 Set 4250AM8.060
Centered pin. OC = open chamber head.
Sold As: Kit with Rings
Engine Manufacturer: Chevrolet
Engine Family: Chevrolet BB V8 Mark IV
Engine Displacement (Liters): 7.4
Engine Displacement (cubic inches): 454
Bore Size (in): 4.25
Bore Size (mm): 108
Piston Head Type: Dome
Crown (cc): -26cc
Compression Ratio: 119-10.2
Top Land: 0.308
Pin Type: Press or Floating
Make for Engine Family: General Motors
Oversizes: STD, .030, .040, .060, .070, .100
Crown Type: .250" OC HOLLOW DOME 1V
Pin Diameter (in): 0.99
Pin Configuration: Centered
Year To: 2000
Bore Diameter IN: 4.25
Piston Material: Cast 390 Hypereutectic Alloy
Compression Height IN: 1.645
Bore Diameter MM: 108
Compression Height MM: 41.7
Rod (mm): 155.829
Lock: PRG110-3
Stroke (in): 4
Oversize: .060"
Year From: 1970
Rod (in): 6.135
Pin Number: 0990x300K
OE Deck Height: 9.8
Year Range: 1970-2000
Alloy: 390
Stroke (mm): 101.6
Ring Pack: 5/64, 5/64, 3/16
Pin Diameter (mm): 25.1
Grade Type: Performance
Oversized: Yes
Base Number: KB257
Intake Valve Depth/Diameter: .266/2.310
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