{"title":"RAD Build Kits","description":"\u003cp\u003e\u003cstrong\u003eYour engine. RAD-matched parts. A reason to take the long way home.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAlready have a solid engine to build from? \u003cstrong\u003eRAD Build Kits\u003c\/strong\u003e bring the important pieces together so you can build your own RAD \u003cem\u003eChop Gun\u003c\/em\u003e without chasing a cam, fueling, ECU, harness, sensors and tune from half a dozen sources. Matched packages deliver the sound, torque and street manners you came for. Pick the build you want and get the parts that belong together.\u003c\/p\u003e","products":[{"product_id":"coming-soon-chop-gun-911-rad-6-2l-porsche-ls-diy-build-kit","title":"COMING SOON - Chop Gun 911 - RAD 6.2L Porsche LS DIY Full Build Kit","description":"\u003cdiv class=\"text-base my-auto mx-auto [--thread-content-margin:var(--thread-content-margin-xs,calc(var(--spacing)*4))] @w-sm\/main:[--thread-content-margin:var(--thread-content-margin-sm,calc(var(--spacing)*6))] @w-lg\/main:[--thread-content-margin:var(--thread-content-margin-lg,calc(var(--spacing)*16))] px-(--thread-content-margin)\"\u003e\n\u003cdiv class=\"[--thread-content-max-width:40rem] @w-lg\/main:[--thread-content-max-width:48rem] mx-auto max-w-(--thread-content-max-width) flex-1 group\/turn-messages focus-visible:outline-hidden relative flex w-full min-w-0 flex-col agent-turn\"\u003e\n\u003cdiv class=\"flex max-w-full flex-col gap-4 grow\"\u003e\n\u003cdiv class=\"min-h-8 text-message relative flex w-full flex-col items-end gap-2 text-start break-words whitespace-normal outline-none keyboard-focused:focus-ring [.text-message+\u0026amp;]:mt-1\" dir=\"auto\"\u003e\n\u003cdiv class=\"flex w-full flex-col gap-1 empty:hidden\"\u003e\n\u003cdiv class=\"markdown prose dark:prose-invert wrap-break-word w-full light markdown-new-styling\"\u003e\n\u003cdiv class=\"\"\u003e\n\u003csection class=\"text-token-text-primary w-full focus:outline-none has-data-writing-block:pointer-events-none [\u0026amp;:has([data-writing-block])\u0026gt;*]:pointer-events-auto R6Vx5W_threadScrollVars scroll-mb-[calc(var(--scroll-root-safe-area-inset-bottom,0px)+var(--thread-response-height))] scroll-mt-[calc(var(--header-height)+min(200px,max(70px,20svh)))]\" dir=\"auto\"\u003e\n\u003cdiv class=\"text-base my-auto mx-auto pb-15 [--thread-content-margin:var(--thread-content-margin-xs,calc(var(--spacing)*4))] @w-sm\/main:[--thread-content-margin:var(--thread-content-margin-sm,calc(var(--spacing)*6))] @w-lg\/main:[--thread-content-margin:var(--thread-content-margin-lg,calc(var(--spacing)*16))] px-(--thread-content-margin)\"\u003e\n\u003cdiv class=\"[--thread-content-max-width:40rem] @w-lg\/main:[--thread-content-max-width:48rem] mx-auto max-w-(--thread-content-max-width) flex-1 group\/turn-messages focus-visible:outline-hidden relative flex w-full min-w-0 flex-col agent-turn\"\u003e\n\u003cdiv class=\"flex max-w-full flex-col gap-4 grow\"\u003e\n\u003cdiv dir=\"auto\" class=\"min-h-8 text-message relative flex w-full flex-col items-end gap-2 text-start break-words whitespace-normal outline-none keyboard-focused:focus-ring [.text-message+\u0026amp;]:mt-1\"\u003e\n\u003cdiv class=\"flex w-full flex-col gap-1 empty:hidden\"\u003e\n\u003cdiv class=\"markdown prose dark:prose-invert wrap-break-word w-full light markdown-new-styling\"\u003e\n\u003ch2\u003e\u003cspan\u003eDo you have the need? The need for speed? Introducing, RAD's \u003cem\u003eChop Gun 911 \u003c\/em\u003eDIY Full Build Kit for the Porsche 996\/997. \u003c\/span\u003e\u003c\/h2\u003e\n\u003ch2\u003eTime to make your LS Swapped Porsche perform like 911 x 1000!\u003c\/h2\u003e\n\u003ch1\u003e\u003cspan\u003eChop Gun 911 — RAD DIY Build Kit\u003c\/span\u003e\u003c\/h1\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003e\u003cspan\u003eBuild your 6.2L for the 911.\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003e\u003cspan\u003eEstimated starting price: $6,999\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eA good 6.2L LS is a strong place to start. Chop Gun 911 is how you build it into an engine suited to its new home behind the seats of a Porsche 996 or 997. The kit brings together the Chop Gun cam and supporting valvetrain, a substantial top-end refresh, Porsche-specific oiling, and the electronics and finished RAD tune that make the combination work in the car.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eWhether your engine is a used takeout or a fresh crate engine, the installation is an opportunity to address more than performance. Chop Gun 911 supplies the parts to replace key seals, sensors, and wear items while the engine is apart—and tackles several of the engine-side challenges that make a Porsche swap different from a conventional LS installation.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003e\u003cspan\u003eFour parts of one complete conversion:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eChop Gun performance.\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e A RAD-specified camshaft, matched valve springs and pushrods, new lifters and trays, and renewed timing components deliver the sound and response of the Chop Gun combination. The kit also includes the parts to eliminate factory DoD if your 6.2L has it.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eA fresh top end.\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e A complete top-end gasket and seal package includes new head gaskets and valve stem seals. New engine-control and monitoring sensors, spark plugs, front-cover components, and related hardware address important maintenance work as part of the build.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003ePorsche integration.\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e The front-sump pan and matched pickup handle engine-side oil-pan packaging. A plug-and-play standalone ECU and harness, Porsche CAN interface, flex-fuel capability, and completed RAD tune bring the engine into the 996\/997.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eBuilt for the way a 911 carries and oils its engine.\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Upgraded head studs add clamping where the Porsche installation supports the LS through its cylinder heads. A high-volume, high-pressure oil pump, crank scraper, windage tray, and matched front-sump hardware complete the oiling package.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan\u003eYou supply a mechanically sound 6.2L LS and build it yourself or with your chosen shop. RAD supplies a defined path to \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eChop Gun 911\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e—the character you came for, with the engine-side Porsche work already specified.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cspan\u003eWhat’s Included in the Chop Gun 911 Build Kit\u003c\/span\u003e\u003c\/h2\u003e\n\u003ch3\u003e\u003cspan\u003eCamshaft, Valvetrain \u0026amp; DoD Elimination\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eRAD-specified Chop Gun camshaft\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eNew camshaft mounting bolts\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eCamshaft retainer and retainer bolt kit\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003ePerformance timing set and timing-chain damper\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eFront timing cover kit with gasket, cam-position sensor, and installation hardware\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eNew hydraulic roller lifters and lifter guide trays\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eValve spring kit matched to the camshaft\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eMatched pushrods\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eReplacement valley cover for DoD elimination\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThese components provide the cam and valvetrain conversion for a suitable 6.2L LS, including the parts needed to remove factory DoD hardware when present.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eCylinder-Head \u0026amp; Top-End Service\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eUpgraded cylinder-head studs and their fastening hardware\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eComplete top-end gasket and seal kit, including new head gaskets and valve-stem seals\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eValve-cover gaskets and associated upper-engine seals supplied with the top-end kit\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eRAD-logo valve covers w\/ignition coil mounts (that fit your 911!)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eNew valve-cover mounting bolts\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe included head gaskets, seals, studs, and valve-spring components allow the cylinder-head work to be completed as part of the conversion.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003ePorsche Oiling Package\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eHigh-volume, high-pressure oil pump\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eCrank scraper and windage tray\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003ePorsche-application front-sump oil pan with oil-filter mounting provision\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eMatched oil-pump pickup\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eOil-pan gasket and installation hardware\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eOil dipstick\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eEngine oil and oil filter for customer installation\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe pan, pickup, pump, and windage components are supplied together for the 911 installation.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eFuel \u0026amp; Ignition Service\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eFuel rails\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eMatched set of fuel injectors\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eNew set of spark plugs\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cspan\u003eECU, Porsche Interface \u0026amp; Sensors\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eStandalone engine ECU\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003ePorsche 996\/997 plug-in ECU and engine-management harness\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003ePorsche CAN interface\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eFlex-fuel sensor\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eNew crank-position sensor\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eMAP sensor\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eEngine coolant-temperature sensor\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eFuel-pressure sensor\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eOil-pressure sensor\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eOil-temperature sensor\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eCam-position sensor supplied with the front-cover kit\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eIntake-air-temperature and oxygen-sensing hardware supplied with the ECU package\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cspan\u003eCompleted RAD Tune\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe ECU includes the completed Chop Gun 911 RAD tune for startup, idle, normal driving, throttle response, flex-fuel operation, and full-throttle performance.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe kit is designed around a mechanically sound, customer-supplied 6.2L LS. Its existing block, rotating assembly, cylinder heads, intake manifold, throttle body, ignition coils, and compatible accessories provide the starting point for the conversion.\u003c\/span\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3 dir=\"auto\" class=\"PDq2pG_selectionAnchorContainer\"\u003eStarting Engine and Vehicle Requirements\u003cspan class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\n\u003c\/h3\u003e\n\u003cp dir=\"auto\"\u003eThe Chop Gun 911 DIY Build Kit is designed to convert a sound, largely stock Gen IV 6.2L LS into RAD’s Porsche-specific Chop Gun configuration. Before ordering, the following are assumed:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eA complete, serviceable Gen IV 6.2L LS engine core.\u003c\/strong\u003e The block, crankshaft, connecting rods, pistons, rocker arms, and ignition coils must be suitable for reuse. Engines with or without DoD are acceptable; tell RAD whether the core has DoD and\/or VVT so the correct components can be specified.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGood underlying engine condition.\u003c\/strong\u003e Verify compression, leakdown, and oil pressure before disassembly where possible. The core must be free of material defects such as damaged cylinder walls, bearing damage, cracks, overheating damage, or oil\/coolant contamination. This kit does not include machine work or a rebuild of a damaged short block.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStock, unmodified OEM rectangular-port cylinder heads, typically 821 or 823 castings.\u003c\/strong\u003e The heads must not have been milled, ported, or otherwise altered. Deck surfaces, valve guides, and the mounting locations used in the Porsche installation must be serviceable.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAn OEM LS3 car-style intake manifold and compatible OEM LS3 drive-by-wire throttle body.\u003c\/strong\u003e These are assumed to come with the customer’s engine or be supplied separately.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eA compatible Porsche 996\/997 installation.\u003c\/strong\u003e Vehicle-side swap parts and systems—including engine and transmission mounting, cooling, fuel supply, exhaust, accessory drive, charging, and starting—must be supplied separately as needed. Provide the Porsche model year and transmission configuration before ordering.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVehicle wiring compatible with the supplied Porsche integration package.\u003c\/strong\u003e Tell RAD about any previous changes to the DME connections, CAN wiring, throttle pedal wiring, or engine harness so the ECU and interface can be specified correctly.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAn installer equipped for engine assembly work.\u003c\/strong\u003e Installation involves removing the cylinder heads, replacing the camshaft and valvetrain components, fitting the Porsche oiling system, installing the ECU and harness, and checking mechanical clearances before startup.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp dir=\"auto\"\u003e\u003cstrong\u003eHave a different combination?\u003c\/strong\u003e RAD can accommodate many variations. Contact us before ordering if your engine, cylinder heads, intake, wiring, or Porsche installation differs from these assumptions so we can confirm the right kit configuration.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eThe Parts Behind the RAD Badge\u003c\/h3\u003e\n\u003cp\u003eTypical component brands across RAD packages include BTR, Texas Speed, Cam Motion, AFR, PRC, Mahle, ARP, GM Performance, Engine Pro, Fuel Injector Clinic, Bosch, Haltech, and MaxxECU. For turbo systems, that roster also includes Garrett, BorgWarner, and Turbosmart. RAD favors American-made performance hardware and proven specialists throughout each combination. Every part is selected for quality, durability, and fit, so you can have confidence in both the components and the RAD engineering behind them. \u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"RAD","offers":[{"title":"Default Title","offer_id":46527093899321,"sku":null,"price":6999.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0809\/8512\/9017\/files\/911x1000_0c346dea-114a-460a-baec-80718d944782.png?v=1789588171"},{"product_id":"coming-soon-chop-gun-rad-6-2l-ls-diy-full-build-kit","title":"COMING SOON - Chop Gun - RAD 6.2L LS DIY Full Build Kit","description":"\u003cdiv class=\"text-base my-auto mx-auto [--thread-content-margin:var(--thread-content-margin-xs,calc(var(--spacing)*4))] @w-sm\/main:[--thread-content-margin:var(--thread-content-margin-sm,calc(var(--spacing)*6))] @w-lg\/main:[--thread-content-margin:var(--thread-content-margin-lg,calc(var(--spacing)*16))] px-(--thread-content-margin)\"\u003e\n\u003cdiv class=\"[--thread-content-max-width:40rem] @w-lg\/main:[--thread-content-max-width:48rem] mx-auto max-w-(--thread-content-max-width) flex-1 group\/turn-messages focus-visible:outline-hidden relative flex w-full min-w-0 flex-col agent-turn\"\u003e\n\u003cdiv class=\"flex max-w-full flex-col gap-4 grow\"\u003e\n\u003cdiv class=\"min-h-8 text-message relative flex w-full flex-col items-end gap-2 text-start break-words whitespace-normal outline-none keyboard-focused:focus-ring [.text-message+\u0026amp;]:mt-1\" dir=\"auto\"\u003e\n\u003cdiv class=\"flex w-full flex-col gap-1 empty:hidden\"\u003e\n\u003cdiv class=\"markdown prose dark:prose-invert wrap-break-word w-full light markdown-new-styling\"\u003e\n\u003cdiv class=\"\"\u003e\n\u003csection class=\"text-token-text-primary w-full focus:outline-none has-data-writing-block:pointer-events-none [\u0026amp;:has([data-writing-block])\u0026gt;*]:pointer-events-auto R6Vx5W_threadScrollVars scroll-mb-[calc(var(--scroll-root-safe-area-inset-bottom,0px)+var(--thread-response-height))] scroll-mt-[calc(var(--header-height)+min(200px,max(70px,20svh)))]\" dir=\"auto\"\u003e\n\u003cdiv class=\"text-base my-auto mx-auto pb-15 [--thread-content-margin:var(--thread-content-margin-xs,calc(var(--spacing)*4))] @w-sm\/main:[--thread-content-margin:var(--thread-content-margin-sm,calc(var(--spacing)*6))] @w-lg\/main:[--thread-content-margin:var(--thread-content-margin-lg,calc(var(--spacing)*16))] px-(--thread-content-margin)\"\u003e\n\u003cdiv class=\"[--thread-content-max-width:40rem] @w-lg\/main:[--thread-content-max-width:48rem] mx-auto max-w-(--thread-content-max-width) flex-1 group\/turn-messages focus-visible:outline-hidden relative flex w-full min-w-0 flex-col agent-turn\"\u003e\n\u003cdiv class=\"flex max-w-full flex-col gap-4 grow\"\u003e\n\u003cdiv dir=\"auto\" class=\"min-h-8 text-message relative flex w-full flex-col items-end gap-2 text-start break-words whitespace-normal outline-none keyboard-focused:focus-ring [.text-message+\u0026amp;]:mt-1\"\u003e\n\u003cdiv class=\"flex w-full flex-col gap-1 empty:hidden\"\u003e\n\u003cdiv class=\"markdown prose dark:prose-invert wrap-break-word w-full light markdown-new-styling\"\u003e\n\u003ch2 dir=\"auto\" class=\"PDq2pG_selectionAnchorContainer\"\u003e\n\u003cspan role=\"text\"\u003eDo you have the need? The need for speed? Meet RAD’s \u003cem\u003eChop Gun\u003c\/em\u003e DIY Full Build Kit.\u003c\/span\u003e\u003cspan class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\n\u003c\/h2\u003e\n\u003ch1 dir=\"auto\"\u003eChop Gun — RAD DIY Full Build Kit\u003c\/h1\u003e\n\u003cp dir=\"auto\"\u003e\u003cstrong\u003eTransform your 6.2L into a RAD Chop Gun engine!\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003e\u003cstrong\u003eStarting at $4,999\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003eAlready have a solid 6.2L LS? Chop Gun brings together the cam, supporting valvetrain, fuel system, oiling components, engine management, and RAD tune to give it a new personality. It has the chop and throttle response you came for, backed by a matched combination of parts instead of a pile of separate purchases.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003eThis is also a chance to take care of an engine whose history you may not know. The kit includes new lifters, a full top-end gasket and seal package, head bolts, selected sensors, and other components worth addressing while the engine is apart. Engines with factory DoD get the parts needed to remove it as part of the build.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003e\u003cstrong\u003eThe package covers four major jobs:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eGive it Chop Gun character.\u003c\/strong\u003e The RAD-specified camshaft is paired with the springs, pushrods, lifters, timing components, and fueling selected for the combination.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRefresh the top end.\u003c\/strong\u003e New head gaskets, valve-stem seals, head bolts, lifters, and upper-engine seals make the required head removal an opportunity to service the engine properly.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUpdate the oiling system. \u003c\/strong\u003eA new standard-volume, standard-pressure oil pump and complete rear-sump pan package provide a fresh, matched foundation for the build.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMake it run as one package.\u003c\/strong\u003e A standalone ECU, Gen IV LS engine harness, electronic-throttle connections, sensors, and RAD tune bring the mechanical and electronic pieces together.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp dir=\"auto\"\u003eYou supply a mechanically sound 6.2L engine and do the work yourself or with your chosen shop. RAD supplies the matched parts and calibration to build your own \u003cstrong\u003eChop Gun\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch2 dir=\"auto\"\u003eWhat’s Included in the Chop Gun Build Kit\u003c\/h2\u003e\n\u003ch3 dir=\"auto\"\u003eCamshaft, Valvetrain \u0026amp; DoD Elimination\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eRAD-specified Chop Gun camshaft\u003c\/li\u003e\n\u003cli\u003eNew camshaft mounting bolts\u003c\/li\u003e\n\u003cli\u003eCamshaft retainer and bolt kit\u003c\/li\u003e\n\u003cli\u003eNew performance timing set\u003c\/li\u003e\n\u003cli\u003eTiming-chain damper\u003c\/li\u003e\n\u003cli\u003eNew hydraulic roller lifters\u003c\/li\u003e\n\u003cli\u003eNew lifter guide trays\u003c\/li\u003e\n\u003cli\u003eValve-spring kit matched to the camshaft\u003c\/li\u003e\n\u003cli\u003eMatched pushrods\u003c\/li\u003e\n\u003cli\u003eNon-VVT front timing cover with cam-position sensor, wiring, gasket, and installation hardware\u003c\/li\u003e\n\u003cli\u003eReplacement valley cover for engines equipped with DoD\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp dir=\"auto\"\u003e\u003cstrong\u003eCylinder-head removal is required\u003c\/strong\u003e to install the new lifters and guide trays. If your engine has DoD, the included components allow its factory lifter hardware to be removed during that work.\u003c\/p\u003e\n\u003ch3 dir=\"auto\"\u003eCylinder-Head \u0026amp; Top-End Service\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eComplete top-end gasket and seal kit, including new head gaskets and valve-stem seals\u003c\/li\u003e\n\u003cli\u003eValve-cover gaskets and other upper-engine seals supplied with the top-end kit\u003c\/li\u003e\n\u003cli\u003eNew cylinder-head bolts for reassembly\u003c\/li\u003e\n\u003cli\u003eRAD-logo valve covers with ignition-coil mounting provisions\u003c\/li\u003e\n\u003cli\u003eNew valve-cover mounting bolts\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp dir=\"auto\"\u003eThe kit reuses your serviceable stock cylinder heads. Head machining, replacement heads, and short-block rebuilding are not part of the base package.\u003c\/p\u003e\n\u003ch3 dir=\"auto\"\u003eOiling \u0026amp; Rear-Sump Pan Package\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eNew standard-volume, standard-pressure oil pump\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eRear-sump oil pan with oil-filter mounting provision\u003c\/li\u003e\n\u003cli\u003ePickup matched to the supplied pan\u003c\/li\u003e\n\u003cli\u003eOil-pan gasket and installation hardware\u003c\/li\u003e\n\u003cli\u003eOil dipstick\u003c\/li\u003e\n\u003cli\u003eEngine oil and oil filter for customer installation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp dir=\"auto\"\u003eThe \u003cstrong\u003erear-sump pan is the standard configuration\u003c\/strong\u003e. If your chassis calls for a front-sump or another pan arrangement, contact RAD before ordering so the oiling package can be specified for your build.\u003c\/p\u003e\n\u003ch3 dir=\"auto\"\u003eFuel \u0026amp; Ignition Service\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eFuel rails\u003c\/li\u003e\n\u003cli\u003eMatched set of fuel injectors\u003c\/li\u003e\n\u003cli\u003eTwo sets of spark plugs\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 dir=\"auto\"\u003eECU, Engine Harness \u0026amp; Sensors\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eStandalone engine ECU with support for the OEM LS3 electronic throttle\u003c\/li\u003e\n\u003cli\u003eTerminated Gen IV LS engine harness\u003c\/li\u003e\n\u003cli\u003eElectronic-throttle and accelerator-pedal adapter harnesses\u003c\/li\u003e\n\u003cli\u003eInjector, alternator, and applicable sensor adapter harnesses supplied with the ECU package\u003c\/li\u003e\n\u003cli\u003eManual-transmission speed-sensor harness supplied with the ECU package\u003c\/li\u003e\n\u003cli\u003eWideband oxygen sensor and installation fitting\u003c\/li\u003e\n\u003cli\u003eIntake-air-temperature sensor and installation fitting\u003c\/li\u003e\n\u003cli\u003eFlex-fuel sensor\u003c\/li\u003e\n\u003cli\u003eNew crank-position sensor\u003c\/li\u003e\n\u003cli\u003eMAP sensor\u003c\/li\u003e\n\u003cli\u003eEngine coolant-temperature sensor\u003c\/li\u003e\n\u003cli\u003eFuel-pressure sensor\u003c\/li\u003e\n\u003cli\u003eOil-pressure sensor\u003c\/li\u003e\n\u003cli\u003eOil-temperature sensor\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 dir=\"auto\"\u003eRAD Chop Gun Tune\u003c\/h3\u003e\n\u003cp dir=\"auto\"\u003eThe included ECU receives a RAD Chop Gun calibration developed for the supplied camshaft, injectors, sensors, and engine-management package. It covers startup, idle, throttle response, normal driving, flex-fuel operation, and full-throttle performance. The installer should verify the completed installation and calibration in the vehicle before driving.\u003c\/p\u003e\n\u003cp dir=\"auto\"\u003eThe customer’s sound 6.2L block, rotating assembly, cylinder heads, intake manifold, throttle body, rocker arms, ignition components, and compatible accessories provide the starting point for the build.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3 dir=\"auto\"\u003eStarting Engine and Vehicle Requirements\u003c\/h3\u003e\n\u003cp dir=\"auto\"\u003eThe standard Chop Gun DIY Full Build Kit is specified around a sound, largely stock Gen IV 6.2L LS. Before ordering, the following are assumed:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eA complete, serviceable Gen IV 6.2L engine core.\u003c\/strong\u003e The block, crankshaft, connecting rods, pistons, rocker arms, ignition coils, and other reused components must be suitable for continued service. Engines with or without VVT and\/or DoD are acceptable. Tell RAD which systems your engine has so the correct conversion components are supplied.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGood underlying engine condition.\u003c\/strong\u003e Check compression, leakdown, and oil pressure before disassembly where possible. The core must be free of material defects, including damaged cylinder walls, bearing damage, cracks, overheating damage, and oil or coolant contamination. Machine work and short-block repairs are not included.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStock, unmodified OEM rectangular-port cylinder heads, typically 821 or 823 castings.\u003c\/strong\u003e The heads must not have been milled, ported, or otherwise altered, and their decks, valves, and guides must be serviceable.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAn OEM LS3 car-style intake manifold and OEM LS3 electronic throttle body.\u003c\/strong\u003e Both are assumed to be supplied with your engine or sourced separately.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eA compatible electronic accelerator pedal and vehicle-side systems.\u003c\/strong\u003e The ECU package includes the specified pedal adapter harness, but the pedal and the vehicle’s fuel supply, cooling, exhaust, charging, starting, and other installation systems must be compatible and supplied separately as needed.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRoom for the included rear-sump oil pan.\u003c\/strong\u003e Confirm chassis, crossmember, steering, and ground-clearance requirements before ordering. Other pan configurations can be discussed with RAD.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAn installer equipped for head-off engine work.\u003c\/strong\u003e Installation includes removing the cylinder heads, changing the camshaft and lifters, fitting the valve springs and oiling components, and checking clearances and operation before startup.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp dir=\"auto\"\u003e\u003cstrong\u003eHave a different combination?\u003c\/strong\u003e Contact RAD before ordering if your engine, heads, intake, throttle body, pedal, or vehicle installation differs from these assumptions. RAD can accommodate many configurations once the starting point is clear.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3 dir=\"auto\"\u003eThe Parts Behind the RAD Badge\u003c\/h3\u003e\n\u003cp dir=\"auto\"\u003eTypical component brands across RAD packages include BTR, Texas Speed, Cam Motion, AFR, PRC, Mahle, ARP, GM Performance, Engine Pro, Fuel Injector Clinic, Bosch, Haltech, and MaxxECU. For turbo systems, that roster also includes Garrett, BorgWarner, and Turbosmart. RAD favors American-made performance hardware and proven specialists throughout each combination. Every part is selected for quality, durability, and fit, so you can have confidence in both the components and the RAD engineering behind them.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"RAD","offers":[{"title":"Default Title","offer_id":46531863642169,"sku":null,"price":4999.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0809\/8512\/9017\/files\/Chop_Gun_Logo.png?v=1789588396"}],"url":"https:\/\/rad-power.com\/collections\/rad-build-kits.oembed","provider":"RAD","version":"1.0","type":"link"}