Big Block Chevy Heads 3919840. Rectangle Portfrom $2,500.00 1968 Big Block Chevy BBC 396 427 Rectangle Heads 3919840 (Read Description)from $600.00 OEM GM 3919840 Big Block Chevy Rectangular Port Heads 396 427 Complete Pair K 67from $1,649.00 GM Rectangle Port cylinder heads 3919840 Camaro Chevelle Corvette July 68 1968from $1,399.00 1968 68 Corvette 427 Chevelle SS 396 Camaro Chevy II Nova 840 cylinder headsfrom $1,500.00 GM Big Block Chevy Large Oval Port Heads 3872702 1966 396 325HP 360HP 427/390HP from $1,000.00 3919842 CYLINDER HEADS L89 ALUMINUM 427 396 YENKOs also other dates 260-417-6566from $4,396.25 1967 Corvette BBC Head 3919840 Chevy 427 Big Block Rectangle Port Cylinder GMfrom $785.00 GM Big Block Chevy Large Oval Port Heads 3872702 1966 396 325HP 360HP 427/390HP from $600.00 CORVETTE CHEVROLET HEADS, 3872702 L 6 5 AND L 9 5, MATCHED SET 427 396 REBUILTfrom $900.00 1968 Big Block Chevy 396 427 Rectangle Port Heads 3919840 840 F18 C13 9 69 Hipfrom $1,650.00 1968 Big Block Chevy BBC 396 427 Rectangle Port Heads 3919840 840 L-7-7 L-11-7from $1,750.00 68 Original GM # 3919840 Big Block Chevy Rectangular Port Head J-24-7 OEM Stockfrom $650.00 1969 Big Block Chevy BBC 396 427 Rectangle Port Heads 3919840 840 H-7-8 I-30-8from $1,995.00 67 68 Corvette 427 Chevelle Camaro SS 396 Rectangle Port Cylinder Head 840 E187from $999.99 OEM GM 3964291 Big Block Chevy Rectangular Port Head 396 454 Closed Chamber NICEfrom $449.00 OEM GM 3919840 Big Block Chevy Rectangular Port Head 396 427 Complete E 15 8 WOWfrom $749.00 GM Big Block Chevy Large Oval Port Head 3917215 1968 396 325HP 427/390HP 400HPfrom $195.00 1967 Corvette 427-435hp Cylinder heads 3919840from $3,000.00 67 68 69 CORVETTE CHEVELLE CAMARO NOVA 396 427 BBC SQUARE PORT HEAD 3919840 L127from $759.95 1968 E-15-8 Corvette 427 Chevelle SS 396 Camaro Chevy II Nova 840 cylinder headfrom $750.00 
