{"title":"LS7 Heads","description":"","products":[{"product_id":"f710-287cc-ls7-cylinder-head-set","title":"F710 287cc LS7 Cylinder Head (SET)","description":"\u003ch3\u003eF-SERIES F710\u003c\/h3\u003e\n\u003ch5\u003eThe Ultimate Conventional LS Cylinder Head for N\/A, Turbo, or Supercharger LS Combinations.\u003c\/h5\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eRaised Intake And Exhaust Ports For Superior Efficiency.\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptimal Chamber Design, Engineered to: \u003c\/strong\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eProvide More P to V Clearance,  \u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eMaking Room For More Aggressive Camshafts.\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eUnmatched Flow Characteristics In A 10 Degree Valve Angle.\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eCHE Bronze Valve Guide\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eFED Prime Grade – Black Nitride Coated Stainless Steel Intake Valve 2.250″ and Exhaust Valve 1.615″\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandard Spring Kits:\u003c\/strong\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eHydraulic-Roller – FED .700″ Lift Dual Valve Springs with Ti Retainers\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eSolid-Roller – PAC-1228 .900″ Lift Dual Valve Springs with Ti Retainers\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eValve Covers with Billet Oil Fill Cap\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv class=\"woocommerce-Tabs-panel woocommerce-Tabs-panel--description panel entry-content wc-tab\" id=\"tab-description\" role=\"tabpanel\" aria-labelledby=\"tab-title-description\" style=\"display: block;\"\u003e\n\u003cp\u003eF-Series is Frankenstein’s master creation for maximum horsepower, designed to endure and thrive in severe performance racing applications. Every detail of the F-Series is configured to achieve a stable, efficient and enduring system that removes limits imposed by traditional racing cylinder heads designs.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eF-Series Cylinder Heads:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eRaised runner design on intake and exhaust ports allow cylinders to fill efficiently at high-rpm without altering low and mid-range performance.\u003c\/li\u003e\n\u003cli\u003eExhaust to valve port exit is on-center with valves for unmatched flow characteristics in a shallow combustion chamber and 10° valve angle.\u003c\/li\u003e\n\u003cli\u003eHigh-efficiency water jacket.  Optimally reduced water jacket for strength, efficiency and optimal cooling capability for all applications, even endurance racing.\u003c\/li\u003e\n\u003cli\u003e0.750” deck structure. thicker than all stock and most aftermarket castings.\u003c\/li\u003e\n\u003cli\u003eExtended intake flange accepts all standard manifolds without modification.\u003c\/li\u003e\n\u003cli\u003e LS7 bolt pattern accommodates standard header designs using 2” or larger headers.\u003c\/li\u003e\n\u003cli\u003eProprietary modified A356-T6  aluminum casting. We modify the mag, iron, and silica levels to accommodate for the high level of stress on the alloy. This allows us to maintain proper hardness while still having elasticity to flex a small amount under load.\u003c\/li\u003e\n\u003cli\u003e100% designed, tooled, cast, and machined in the USA.\u003c\/li\u003e\n\u003cli\u003eDry deck or solid castings available for an additional fee. (Call for details.)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eF-Series Valve Covers Included:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eValve cover design inspired by the SB2 pattern, clears shaft mount rockers and springs with larger diameter\/higher lift packages.\u003c\/li\u003e\n\u003cli\u003eValve covers are dowelled and o-ringed for superior sealing and serviceability. (See the valve cover section for additional information.)\u003c\/li\u003e\n\u003cli\u003e-6orb water crossover ports allow for better cooling capacity and more flexible installation\/plumbing options.\u003c\/li\u003e\n\u003cli\u003e-16AN ORB Oil Fill cap included.\u003c\/li\u003e\n\u003cli\u003e319 aluminum alloy cast valve covers – the alloy used in most aftermarket and stock cylinder head castings.\u003c\/li\u003e\n\u003cli\u003eIncludes a baffled vent section, compatible with stock PCV\/emissions components.\u003c\/li\u003e\n\u003cli\u003eAvailable with or without built-in coil mounts. (Coil-mounted accepts LS2 \u0026amp; LS3 coils only.)\u003c\/li\u003e\n\u003cli\u003eAvailable finishes: raw cast, gloss green or wrinkle black powder-coated.\u003c\/li\u003e\n\u003cli\u003eOptional F-Series billet valve covers and related \u003ca href=\"https:\/\/frankensteined.net\/product-category\/accessories\/\"\u003eaccessories\u003c\/a\u003e available.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eSolid Roller Options:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eJesel shaft mounted rockers are available with purchase of all F-Series solid roller cylinder heads.\u003c\/li\u003e\n\u003cli\u003eDesigned for on-center lifters.\u003c\/li\u003e\n\u003cli\u003eSolid roller heads will accommodate up to a ½” pushrod.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Frankenstein Engine Dynamics","offers":[{"title":"Default Title","offer_id":46261430485245,"sku":"116098","price":4999.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0754\/7489\/5101\/files\/F710-SH-stainless-stainless-valves-Main.png?v=1748628988"},{"product_id":"f715-285cc-ls7-15deg-cylinder-heads-set","title":"F715 285cc LS7 15deg Cylinder Heads (SET)","description":"\u003cp\u003eThe Superior High Cylinder Pressure Cylinder Head Solution\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eRaised Intake And Exhaust Ports For Superior Efficiency.\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptimal Chamber Design, Engineered to: \u003c\/strong\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eProvide More P to V Clearance,  \u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eMaking Room For More Aggressive Camshafts.\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnmatched Flow Characteristics In A 15 Degree Valve Angle\u003c\/strong\u003e\u003cstrong\u003e.\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eCHE Bronze Valve Guides\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eFED Prime Grade – Black Nitride Coated Stainless Steel Intake Valve 2.200″ and Exhaust Valve 1.650″\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandard Spring Kits:\u003c\/strong\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eHydraulic-Roller – FED .700″ Lift Dual Valve Springs with Ti Retainers\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eSolid-Roller – PAC-1228 .900″ Lift Dual Valve Spring with Ti Retainers\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eValve Covers with Billet Oil Fill Cap\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eSold Per Set\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv class=\"woocommerce-Tabs-panel woocommerce-Tabs-panel--description panel entry-content wc-tab\" id=\"tab-description\" role=\"tabpanel\" aria-labelledby=\"tab-title-description\" style=\"display: block;\"\u003e\n\u003ch2 class=\"yikes-custom-woo-tab-title yikes-custom-woo-tab-title-description\"\u003eDescription\u003c\/h2\u003e\n\u003cp\u003eF-Series is Frankenstein’s master creation for maximum horsepower, designed to endure and thrive in severe performance racing applications. Every detail of the F-Series is configured to achieve a stable, efficient and enduring system that removes limits imposed by traditional racing cylinder heads designs.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eF-Series Cylinder Heads:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eRaised runner design on intake and exhaust ports allow cylinders to fill efficiently at high-rpm without altering low and mid-range performance.\u003c\/li\u003e\n\u003cli\u003eExhaust to valve port exit is on-center with valves for unmatched flow characteristics in a shallow combustion chamber and 15° valve angle.\u003c\/li\u003e\n\u003cli\u003eHigh-efficiency water jacket.  Optimally reduced water jacket for strength, efficiency and optimal cooling capability for all applications, even endurance racing.\u003c\/li\u003e\n\u003cli\u003e0.750” deck structure. thicker than all stock and most aftermarket castings.\u003c\/li\u003e\n\u003cli\u003eExtended intake flange accepts all standard manifolds without modification.\u003c\/li\u003e\n\u003cli\u003e LS7 bolt pattern accommodates standard header designs using 2” or larger headers.\u003c\/li\u003e\n\u003cli\u003eProprietary modified A356-T6  aluminum casting. We modify the mag, iron, and silica levels to accommodate for the high level of stress on the alloy. This allows us to maintain proper hardness while still having elasticity to flex a small amount under load.\u003c\/li\u003e\n\u003cli\u003e100% designed, tooled, cast, and machined in the USA.\u003c\/li\u003e\n\u003cli\u003eDry deck or solid castings available for an additional fee. (Call for details.)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eF-Series Valve Covers Included:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eValve cover design inspired by the SB2 pattern, clears shaft mount rockers and springs with larger diameter\/higher lift packages.\u003c\/li\u003e\n\u003cli\u003eValve covers are dowelled and o-ringed for superior sealing and serviceability. (See the valve cover section for additional information.)\u003c\/li\u003e\n\u003cli\u003e-6orb water crossover ports allow for better cooling capacity and more flexible installation\/plumbing options.\u003c\/li\u003e\n\u003cli\u003e-16AN ORB Oil Fill cap included.\u003c\/li\u003e\n\u003cli\u003e319 aluminum alloy cast valve covers – the alloy used in most aftermarket and stock cylinder head castings.\u003c\/li\u003e\n\u003cli\u003eIncludes a baffled vent section, compatible with stock PCV\/emissions components.\u003c\/li\u003e\n\u003cli\u003eAvailable with or without built-in coil mounts. (Coil-mounted accepts LS2 \u0026amp; LS3 coils only.)\u003c\/li\u003e\n\u003cli\u003eAvailable finishes: raw cast, gloss green or wrinkle black powder-coated.\u003c\/li\u003e\n\u003cli\u003eOptional F-Series billet valve covers and related \u003ca href=\"https:\/\/frankensteined.net\/product-category\/accessories\/\"\u003eaccessories\u003c\/a\u003e available.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eSolid Roller Options:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eJesel shaft mounted rockers are available with purchase of all F-Series solid roller cylinder heads.\u003c\/li\u003e\n\u003cli\u003eDesigned for on-center lifters.\u003c\/li\u003e\n\u003cli\u003eSolid roller heads will accommodate up to a ½” pushrod.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Frankenstein Engine Dynamics","offers":[{"title":"Default Title","offer_id":46261430518013,"sku":"116126, XC","price":4999.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0754\/7489\/5101\/files\/F715-EXH-1.png?v=1747682029"},{"product_id":"f710mb-277cc-medium-bore-4-080-cylinder-head-set","title":"F710MB 277cc Medium-Bore 4.080 Cylinder Head (SET)","description":"\u003cp\u003eAll of the Same Design Attributes Intended for 4.065” or Larger Bore Applications.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eRaised Intake And Exhaust Ports For Superior Efficiency.\u003c\/li\u003e\n\u003cli\u003eOptimal Chamber Design, Engineered to:\n\u003cul\u003e\n\u003cli\u003eProvide More P to V Clearance, \u003c\/li\u003e\n\u003cli\u003eMaking Room For More Aggressive Camshafts.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003eUnmatched Flow Characteristics In A 10 Degree Valve Angle.\u003c\/li\u003e\n\u003cli\u003eChamber: 65cc, 4.080 Bore\u003c\/li\u003e\n\u003cli\u003eCHE Bronze Valve Guides\u003c\/li\u003e\n\u003cli\u003eFED Prime Grade Black Nitride Coated Stainless Steel Intake Valve 2.180″ and Exhaust Valve 1.615″\u003c\/li\u003e\n\u003cli\u003eStandard Spring Kits:\n\u003cul\u003e\n\u003cli\u003eHydraulic-Roller – FED .700″ Lift Dual Valve Springs with Ti Retainers\u003c\/li\u003e\n\u003cli\u003eSolid-Roller – PAC-1228 .900″ Lift Dual Valve Springs with Ti Retainers\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003eCast Valve Covers with Billet Oil Fill Cap\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAll of the Same Design Attributes Intended for 4.065” or Larger Bore Applications.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eRaised Intake And Exhaust Ports For Superior Efficiency.\u003c\/li\u003e\n\u003cli\u003eOptimal Chamber Design, Engineered to:\n\u003cul\u003e\n\u003cli\u003eProvide More P to V Clearance, \u003c\/li\u003e\n\u003cli\u003eMaking Room For More Aggressive Camshafts.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003eUnmatched Flow Characteristics In A 10 Degree Valve Angle.\u003c\/li\u003e\n\u003cli\u003eChamber: 65cc, 4.080 Bore\u003c\/li\u003e\n\u003cli\u003eCHE Bronze Valve Guides\u003c\/li\u003e\n\u003cli\u003eFED Prime Grade Black Nitride Coated Stainless Steel Intake Valve 2.180″ and Exhaust Valve 1.615″\u003c\/li\u003e\n\u003cli\u003eStandard Spring Kits:\n\u003cul\u003e\n\u003cli\u003eHydraulic-Roller – FED .700″ Lift Dual Valve Springs with Ti Retainers\u003c\/li\u003e\n\u003cli\u003eSolid-Roller – PAC-1228 .900″ Lift Dual Valve Springs with Ti Retainers\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003eCast Valve Covers with Billet Oil Fill Cap\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Frankenstein Engine Dynamics","offers":[{"title":"Default Title","offer_id":46261430550781,"sku":"116210-1","price":4999.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0754\/7489\/5101\/files\/F715-INT.png?v=1747682030"},{"product_id":"f710pa-power-adder-290cc-ls7-cylinder-head-set","title":"F710PA - Power-Adder 290cc LS7 Cylinder Head (SET)","description":"\u003cp\u003eThe Power Adder features a biased exhaust port to reduce restriction and increase power adder performance. The enhanced 1.650 exhaust valve size may require alternative pistons for piston to valve clearance. (see specifications tab for piston suppliers familiar with FED F-Series PA).\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIncluded with the F-Series Power Adder:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eRaised Intake And Exhaust Ports For Superior Efficiency\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eUnmatched Flow Characteristics In A 10 Degree Valve Angle\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eSoftened Chambers (Quench Cut) Included\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eBlack Nitride Stainless Intake Valves   2.200\u003cbr\u003e\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eBlack Nitride Stainless Exhaust Valves  1.650\u003cbr\u003e\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eCHE Bronze Valve Guides\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandard Spring Kits:\u003c\/strong\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eHydraulic-Roller – FED .700″ Lift Dual Valve Spring Kit with Ti Retainers\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eSolid-Roller – PAC-1228 .900″ Lift Dual Valve Spring Kit with Ti Retainers\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eValve Covers with Billet Oil Fill Cap\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv class=\"woocommerce-Tabs-panel woocommerce-Tabs-panel--description panel entry-content wc-tab\" id=\"tab-description\" role=\"tabpanel\" aria-labelledby=\"tab-title-description\" style=\"display: block;\"\u003e\n\u003ch2 class=\"yikes-custom-woo-tab-title yikes-custom-woo-tab-title-description\"\u003e\u003cbr\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eF-Series Cylinder Heads:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eRaised runner design on intake and exhaust ports allow cylinders to fill efficiently at high-rpm without altering low and mid-range performance.\u003c\/li\u003e\n\u003cli\u003eExhaust to valve port exit is on-center with valves for unmatched flow characteristics in a shallow combustion chamber and 10° valve angle.\u003c\/li\u003e\n\u003cli\u003eHigh-efficiency water jacket.  Optimally reduced water jacket for strength, efficiency and optimal cooling capability for all applications, even endurance racing.\u003c\/li\u003e\n\u003cli\u003e0.750” deck structure. thicker than all stock and most aftermarket castings.\u003c\/li\u003e\n\u003cli\u003eExtended intake flange accepts all standard manifolds without modification.\u003c\/li\u003e\n\u003cli\u003e LS7 bolt pattern accommodates standard header designs using 2” or larger headers.\u003c\/li\u003e\n\u003cli\u003eProprietary modified A356-T6  aluminum casting. We modify the mag, iron, and silica levels to accommodate for the high level of stress on the alloy. This allows us to maintain proper hardness while still having elasticity to flex a small amount under load.\u003c\/li\u003e\n\u003cli\u003e100% designed, tooled, cast, and machined in the USA.\u003c\/li\u003e\n\u003cli\u003eDry deck or solid castings available for an additional fee. (Call for details.)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eF-Series Valve Covers Included:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eValve cover design inspired by the SB2 pattern, clears shaft mount rockers and springs with larger diameter\/higher lift packages.\u003c\/li\u003e\n\u003cli\u003eValve covers are dowelled and o-ringed for superior sealing and serviceability. (See the valve cover section for additional information.)\u003c\/li\u003e\n\u003cli\u003e-6orb water crossover ports allow for better cooling capacity and more flexible installation\/plumbing options.\u003c\/li\u003e\n\u003cli\u003e-16AN ORB Oil Fill cap included.\u003c\/li\u003e\n\u003cli\u003e319 aluminum alloy cast valve covers – the alloy used in most aftermarket and stock cylinder head castings.\u003c\/li\u003e\n\u003cli\u003eIncludes a baffled vent section, compatible with stock PCV\/emissions components.\u003c\/li\u003e\n\u003cli\u003eAvailable with or without built-in coil mounts. (Coil-mounted accepts LS2 \u0026amp; LS3 coils only.)\u003c\/li\u003e\n\u003cli\u003eAvailable finishes: raw cast, gloss green or wrinkle black powder-coated.\u003c\/li\u003e\n\u003cli\u003eOptional F-Series billet valve covers and related \u003ca href=\"https:\/\/frankensteined.net\/product-category\/accessories\/\"\u003eaccessories\u003c\/a\u003e available.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eSolid Roller Options:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eJesel shaft mounted rockers are available with purchase of all F-Series solid roller cylinder heads.\u003c\/li\u003e\n\u003cli\u003eDesigned for on-center lifters.\u003c\/li\u003e\n\u003cli\u003eSolid roller heads will accommodate up to a ½” pushrod.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Frankenstein Engine Dynamics","offers":[{"title":"Default Title","offer_id":46261431894269,"sku":"116350","price":4999.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0754\/7489\/5101\/files\/710PA-1.png?v=1747681903"},{"product_id":"m712-boost-monster-283cc-ls7-cylinder-heads-set","title":"M712 Boost Monster 283cc LS7 Cylinder Heads (SET)","description":"\u003cdiv class=\"woocommerce-product-details__short-description\"\u003e\n\u003cdiv class=\"woocommerce-product-details__short-description\"\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan style=\"text-decoration: underline;\"\u003eAll cylinder heads are built to order. Current lead time is approximately 4-6 weeks for completion.  Check \"Ready To Ship\" Tab for what we have in stock.\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFully CNC ported, 68cc chamber volume\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eUpgraded CHE Bronze Guides Installed\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e283cc Intake Port, 95cc Exhaust Port and 12° Valve Angle\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e68cc Chamber Optimized for BOOSTED Applications.\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e2.205 \/ 1.614\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh Quality Components:\u003c\/strong\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eStainless Steel Severe Duty or CRN Titanium Intake Valves\u003cbr\u003e\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eInconel Exhaust Valves\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eCustom Valve Springs (Options Available – Call us!)\u003cbr\u003e\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTitanium Retainers\u003c\/strong\u003e\u003cstrong\u003e\u003cbr\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e2″ Headers Recommended\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eCustom P1 Understud Kit Available and Recommended\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eSold Per Set\u003cbr\u003e\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cp class=\"stock available-on-backorder\"\u003eAvailable on backorder\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Frankenstein Engine Dynamics","offers":[{"title":"Default Title","offer_id":46261433303293,"sku":"113065","price":4200.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0754\/7489\/5101\/files\/M712-1.png?v=1747836475"}],"url":"https:\/\/frankensteined.net\/collections\/ls7-heads.oembed","provider":"Frankenstein Engine Dynamics","version":"1.0","type":"link"}