Long Blocks
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Mast Motorsports Black Label 685hp LS7 7.0L 427 Long Block 4.125 x 4.000
Mast Motorsports
$18,250.00Mast Motorsports Black Label 685hp LS7 7.0L 427 Long Block 4.125 x 4.000 Type: LS7 7.0LDisplacement: 427 Cubic InchesCompression Ratio: 11.4:1Bore x Stroke: 4.125 x 4.000Rev Limit: 7250 RPMCrank: Callies...MAST-LS7427-685$18,250.00