{"product_id":"chevy-big-block-flat-tappet-assembled-aluminum-cylinder-head","title":"Chevy Big Block Flat Tappet Assembled Aluminum Cylinder Head","description":"\u003cp\u003eUpgrade your Big Block Chevy with assembled aluminum cylinder heads engineered to improve airflow, combustion efficiency, and horsepower potential. Featuring 345 cc intake runners, 124 cc combustion chambers, these heads are built for street, strip, and performance engine builds that need better breathing than stock castings.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eImproved Airflow \u0026amp; Power Potential\u003c\/strong\u003e\u003cbr\u003eOptimized runner and chamber design helps move more air through the engine, improving throttle response, torque, and top-end horsepower potential across the RPM range.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAssembled Valve Train Setup\u003c\/strong\u003e\u003cbr\u003eDelivered assembled with matched valves, springs, retainers, locks, and seals where specified, helping simplify installation for flat tappet camshaft applications.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAluminum Construction\u003c\/strong\u003e\u003cbr\u003eLightweight aluminum construction reduces weight compared to factory iron heads while improving heat dissipation for more consistent performance under demanding conditions.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBuilt for Street \u0026amp; Performance Builds\u003c\/strong\u003e\u003cbr\u003eIdeal for performance rebuilds, restorations, and upgraded engine combinations. Always verify piston-to-valve clearance, camshaft compatibility, intake manifold fit, and header clearance before final installation.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCOMPATIBLE WITH\u003c\/strong\u003e\u003cbr\u003eCHEVROLET BIG BLOCK V8\u003c\/p\u003e\n\u003cp\u003e• 6.5L \/ 396 in³\u003cbr\u003e• 6.6L \/ 402 in³\u003cbr\u003e• 7.0L \/ 427 in³\u003cbr\u003e• 7.4L \/ 454 in³\u003cbr\u003e• 8.1L \/ 496 in³ stroker combinations (application-specific verification required)\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCOMMON VEHICLE APPLICATIONS\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eChevrolet Chevelle \/ El Camino (Big Block equipped)\u003cbr\u003eChevrolet Camaro (Big Block equipped or swapped)\u003cbr\u003eChevrolet C10 \/ C\/K Trucks (Big Block equipped)\u003cbr\u003eChevrolet Impala \/ Caprice (Big Block equipped)\u003cbr\u003eMarine, street\/strip, and performance Big Block Chevy builds\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNOTES\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eDesigned for Big Block Chevy engine platforms.\u003c\/p\u003e\n\u003cp\u003eCylinder head sold individually (purchase quantity of 2 required for complete engine).\u003c\/p\u003e\n\u003cp\u003eVerify intake manifold, exhaust header, valve lift, and piston-to-valve clearance.\u003c\/p\u003e\n\u003cp\u003eNot compatible with Small Block Chevy, LS, or LT engine platforms.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSpecifications:\u003c\/strong\u003e\u003cbr\u003eAssembled: Yes\u003cbr\u003eCNC Ported: No\u003cbr\u003eCombustion Chamber Style: Heart\u003cbr\u003eCombustion Chamber Volume: 124 cc\u003cbr\u003eDeck Height: Standard\u003cbr\u003eDeck Thickness: Standard\u003cbr\u003eExhaust Crossover: No\u003cbr\u003eExhaust Port Height: 1.700 in.\u003cbr\u003eExhaust Port Location: Standard\u003cbr\u003eExhaust Port Shape: Square\u003cbr\u003eExhaust Port Width: 1.500 in.\u003cbr\u003eExhaust Valve Material: Stainless Steel\u003cbr\u003eFinish: Natural\u003cbr\u003eGrade Type: Performance\u003cbr\u003eIntake Port Height: 2.300 in.\u003cbr\u003eIntake Port Location: Standard\u003cbr\u003eIntake Port Shape: Rectangle\u003cbr\u003eIntake Port Width: 1.400 in.\u003cbr\u003eIntake Runner Volume: 345 cc\u003cbr\u003eIntake Valve Material: Stainless Steel\u003cbr\u003eMaterial: Aluminum\u003cbr\u003eQuantity: Sold Individually\u003cbr\u003eValve Guide Material: Bronze\u003cbr\u003eValve Springs Included: Yes\u003cbr\u003eValves Included: Yes\u003c\/p\u003e","brand":"Top Street Performance","offers":[{"title":"Default Title","offer_id":51591801635112,"sku":"JM4220","price":785.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0901\/8356\/5608\/files\/JM4220-01.jpg?v=1777405282","url":"https:\/\/topstreetperformance.com\/products\/chevy-big-block-flat-tappet-assembled-aluminum-cylinder-head","provider":"Top Street Performance","version":"1.0","type":"link"}