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060" Bore Hydraulic Roller cylinder heads feature factory LS7 intake valve locations with a shifted exhaust valve location to clear the smaller bore and accept OEM or aftermarket OEM Replacement Valvetrain Rocker Gear
Available for all our shaft mount cylinder heads
factory-style blowers
5" Deck BA Intake Manifold
JK 400 CFM Big Block Chevy Cylinder Heads with as cast ports. (Price per pair BARE) Upgrade:Select Option 060" Bore Hydraulic Roller cylinderPRODUCT DESCRIPTION The CID JK400 Big Block Chevy Cylinder Heads flow an impressive 400CFM from as cast ports on a standard bore! This allows us to offer serious performance from an affordable cylinder head and intake package. These symmetrical port BB Chevy cylinder heads no longer have left and right unequal length runners. We straightened up the valve angles to move away from the factory bath tub chambers and to a smaller more efficient combustion
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