{"product_id":"atomic-550-gt-a","title":"Atomic 550 GT-A | Street Spec | 800hp atw Capable","description":"\u003cp data-sourcepos=\"1:1-1:67\"\u003e \u003c\/p\u003e\n\u003cp data-end=\"186\" data-start=\"94\"\u003e\u003cstrong data-end=\"186\" data-start=\"107\"\u003eAtomic 550 GT-A Long Motor – Ford Barra DOHC | Street Spec | 800hp atw Capable\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-end=\"475\" data-start=\"188\"\u003e\u003cstrong data-end=\"204\" data-start=\"188\"\u003eDescription:\u003c\/strong\u003e\u003cbr data-end=\"207\" data-start=\"204\"\u003eThe \u003cstrong data-end=\"230\" data-start=\"211\"\u003eAtomic 550 GT-A\u003c\/strong\u003e delivers the ultimate blend of streetable refinement and drag-ready strength. Designed for customers chasing up to \u003cstrong data-end=\"356\" data-start=\"346\"\u003e800hp atw\u003c\/strong\u003e on a reliable and quiet long motor, the 550 GT-A bridges the gap between factory drivability and serious performance.\u003c\/p\u003e\n\u003cp data-end=\"709\" data-start=\"477\"\u003eIt comes equipped with our \u003cstrong data-end=\"545\" data-start=\"504\"\u003elegendary Superleggera billet conrods\u003c\/strong\u003e, \u003cstrong data-end=\"577\" data-start=\"547\"\u003ecustom 2618 Atomic Icon forged pistons\u003c\/strong\u003e, and our \u003cstrong data-end=\"628\" data-start=\"587\"\u003erace-proven FULL Steel oil pump with billet gears\u003c\/strong\u003e — all precision-clearanced and \u003cstrong data-end=\"681\" data-start=\"660\"\u003etest-run in-house\u003c\/strong\u003e for guaranteed performance.\u003cbr\u003e\u003c\/p\u003e\n\u003cp data-end=\"709\" data-start=\"477\"\u003e\u003cbr\u003e\u003cstrong\u003eAs featured in the Keep it Reet 1000hp atc Territory build\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-end=\"709\" data-start=\"477\"\u003e\u003ciframe width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/XELnerZxUwM?si=-85oJom_j4c6GaVV\" title=\"YouTube video player\"\u003e\u003c\/iframe\u003e\u003c\/p\u003e\n\u003chr data-end=\"714\" data-start=\"711\"\u003e\n\u003ch3 data-end=\"734\" data-start=\"716\"\u003e✅ Key Features\u003c\/h3\u003e\n\u003cp data-end=\"762\" data-start=\"736\"\u003e\u003cstrong data-end=\"760\" data-start=\"736\"\u003e✅ Block \u0026amp; Foundation\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-end=\"957\" data-start=\"763\"\u003e\n\u003cli data-end=\"957\" data-start=\"763\"\u003e\n\u003cp data-end=\"957\" data-start=\"765\"\u003eUltrasonically tested Ford Barra thick-wall block\u003cbr data-end=\"817\" data-start=\"814\"\u003e• Selected for maximum structural integrity and wall thickness\u003cbr data-end=\"884\" data-start=\"881\"\u003e• Deburred and enlarged oil drain paths\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"994\" data-start=\"959\"\u003e\u003cstrong data-end=\"992\" data-start=\"959\"\u003e✅ Pistons \u0026amp; Rotating Assembly\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-end=\"1400\" data-start=\"995\"\u003e\n\u003cli data-end=\"1156\" data-start=\"995\"\u003e\n\u003cp data-end=\"1156\" data-start=\"997\"\u003e\u003cstrong data-end=\"1042\" data-start=\"997\"\u003eAtomic custom 2618 forged pistons by Icon\u003c\/strong\u003e\u003cbr data-end=\"1045\" data-start=\"1042\"\u003e• Coated skirts, quiet crown geometry, 4-valve reliefs\u003cbr data-end=\"1104\" data-start=\"1101\"\u003e• Ideal for sustained high boost and street duty\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1316\" data-start=\"1157\"\u003e\n\u003cp data-end=\"1316\" data-start=\"1159\"\u003e\u003cstrong data-end=\"1204\" data-start=\"1159\"\u003eAtomic Superleggera H-beam billet conrods\u003c\/strong\u003e\u003cbr data-end=\"1207\" data-start=\"1204\"\u003e• Direct oil feed to piston crown and gudgeon pin\u003cbr data-end=\"1261\" data-start=\"1258\"\u003e• CA625 rod bolts standard for high RPM reliability\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1400\" data-start=\"1317\"\u003e\n\u003cp data-end=\"1400\" data-start=\"1319\"\u003eOEM crankshaft\u003cbr data-end=\"1336\" data-start=\"1333\"\u003e• Journals linished, oil holes chamfered, seal track cleaned\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cblockquote data-end=\"1469\" data-start=\"1402\"\u003e\n\u003cp data-end=\"1469\" data-start=\"1404\"\u003e\u003cem data-end=\"1469\" data-start=\"1404\"\u003eOptional upgrade to FatRod conrods for extreme builds (1500hp+)\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/blockquote\u003e\n\u003cp data-end=\"1505\" data-start=\"1471\"\u003e\u003cstrong data-end=\"1503\" data-start=\"1471\"\u003e✅ Cylinder Head \u0026amp; Valvetrain\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-end=\"1734\" data-start=\"1506\"\u003e\n\u003cli data-end=\"1608\" data-start=\"1506\"\u003e\n\u003cp data-end=\"1608\" data-start=\"1508\"\u003ePorted performance cylinder head\u003cbr data-end=\"1543\" data-start=\"1540\"\u003e• Improved flow and velocity for top-end and low-speed torque\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1666\" data-start=\"1609\"\u003e\n\u003cp data-end=\"1666\" data-start=\"1611\"\u003eAll-new valves, upgraded valve springs, and retainers\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1734\" data-start=\"1667\"\u003e\n\u003cp data-end=\"1734\" data-start=\"1669\"\u003eOptional Atomic camshaft, rocker, and lifter upgrades available\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"1759\" data-start=\"1736\"\u003e\u003cstrong data-end=\"1757\" data-start=\"1736\"\u003e✅ Oiling \u0026amp; Timing\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-end=\"1975\" data-start=\"1760\"\u003e\n\u003cli data-end=\"1873\" data-start=\"1760\"\u003e\n\u003cp data-end=\"1873\" data-start=\"1762\"\u003e\u003cstrong data-end=\"1803\" data-start=\"1762\"\u003eAll-steel high-volume billet oil pump\u003c\/strong\u003e\u003cbr data-end=\"1806\" data-start=\"1803\"\u003e• EDM-cut billet gears, high-flow capacity, steel backing plate\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1975\" data-start=\"1874\"\u003e\n\u003cp data-end=\"1975\" data-start=\"1876\"\u003eComplete Heavy-duty timing chain kit with new OEM Ford tensioner\u003cbr data-end=\"1916\" data-start=\"1913\"\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"2007\" data-start=\"1977\"\u003e\u003cstrong data-end=\"2005\" data-start=\"1977\"\u003e✅ Blueprinting \u0026amp; Testing\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-end=\"2294\" data-start=\"2008\"\u003e\n\u003cli data-end=\"2132\" data-start=\"2008\"\u003e\n\u003cp data-end=\"2132\" data-start=\"2010\"\u003ePrecision-assembled to Atomic clearance specs\u003cbr data-end=\"2058\" data-start=\"2055\"\u003e• Main bearing, piston-to-wall, ring gaps, lifter preload all measured\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"2294\" data-start=\"2133\"\u003e\n\u003cp data-end=\"2294\" data-start=\"2135\"\u003eTest-run in-house with vitals recorded\u003cbr data-end=\"2176\" data-start=\"2173\"\u003e• Oil pressure, lifter bleed, ring seal, and chain tension verified\u003cbr data-end=\"2248\" data-start=\"2245\"\u003e• Detailed build sheet and report supplied\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-end=\"2299\" data-start=\"2296\"\u003e\n\u003ch3 data-end=\"2325\" data-start=\"2301\"\u003e📦 What’s Included\u003c\/h3\u003e\n\u003cul data-end=\"2659\" data-start=\"2326\"\u003e\n\u003cli data-end=\"2372\" data-start=\"2326\"\u003e\n\u003cp data-end=\"2372\" data-start=\"2328\"\u003eFully assembled Atomic 550 GT-A Long Motor\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"2439\" data-start=\"2373\"\u003e\n\u003cp data-end=\"2439\" data-start=\"2375\"\u003ePowder-coated rocker and timing covers (colour of your choice)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"2461\" data-start=\"2440\"\u003e\n\u003cp data-end=\"2461\" data-start=\"2442\"\u003eBrass Welch plugs\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"2521\" data-start=\"2462\"\u003e\n\u003cp data-end=\"2521\" data-start=\"2464\"\u003eNGK spark plugs, Ford oil filter, 14L 15W\/40 run-in oil\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"2555\" data-start=\"2522\"\u003e\n\u003cp data-end=\"2555\" data-start=\"2524\"\u003eGasket set, Atomic merch pack\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"2604\" data-start=\"2556\"\u003e\n\u003cp data-end=\"2604\" data-start=\"2558\"\u003eTorque specs, clearance report, run-in guide\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"2659\" data-start=\"2605\"\u003e\n\u003cp data-end=\"2659\" data-start=\"2607\"\u003e12-month conditional warranty for street\/track use\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-end=\"2664\" data-start=\"2661\"\u003e\n\u003ch3 data-end=\"2692\" data-start=\"2666\"\u003e🔧 Optional Upgrades\u003c\/h3\u003e\n\u003cul data-end=\"3047\" data-start=\"2693\"\u003e\n\u003cli data-end=\"2743\" data-start=\"2693\"\u003e\n\u003cp data-end=\"2743\" data-start=\"2695\"\u003e14mm head stud conversion with CNC drill \u0026amp; tap\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"2799\" data-start=\"2744\"\u003e\n\u003cp data-end=\"2799\" data-start=\"2746\"\u003eAtomic ATI Balancer kit (required to run reliably above 550kw at the crank)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"2832\" data-start=\"2800\"\u003e\n\u003cp data-end=\"2832\" data-start=\"2802\"\u003eAdjustable vernier cam gears\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"2876\" data-start=\"2833\"\u003e\n\u003cp data-end=\"2876\" data-start=\"2835\"\u003eVCT delete spigots and block-off plates\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"2934\" data-start=\"2877\"\u003e\n\u003cp data-end=\"2934\" data-start=\"2879\"\u003eTitanium retainers, and HD rockers\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"2956\" data-start=\"2935\"\u003e\n\u003cp data-end=\"2956\" data-start=\"2937\"\u003eBig Ears sump kit\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"2986\" data-start=\"2957\"\u003e\n\u003cp data-end=\"2986\" data-start=\"2959\"\u003eTorrington thrust bearing\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"3016\" data-start=\"2987\"\u003e\n\u003cp data-end=\"3016\" data-start=\"2989\"\u003eFire-ring head gasket kit\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-sourcepos=\"1:1-1:67\"\u003e\u003cstrong\u003eAtomic 550 GT-A Engine Package: Engineered for High-Performance\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-sourcepos=\"3:1-3:211\"\u003eThe Atomic 550 GT-A engine package represents a comprehensive upgrade for your Ford Barra engine, designed to deliver substantial power gains and enhanced reliability for demanding street and track applications.\u003c\/p\u003e\n\u003cp data-sourcepos=\"5:1-5:32\"\u003e\u003cstrong\u003eKey Components and Features:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-sourcepos=\"7:1-20:0\"\u003e\n\u003cli data-sourcepos=\"7:1-8:0\"\u003e\n\u003cp data-sourcepos=\"7:3-7:216\"\u003e\u003cstrong\u003eUltrasonic Tested Block:\u003c\/strong\u003e The foundation of the 550 GT-A is a thick-wall Barra engine block, carefully selected and subjected to ultrasonic testing to ensure structural integrity and absence of defects. We match blocks to engine spec to make sure you get a block that supports your power goals. \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-sourcepos=\"9:1-10:0\"\u003e\n\u003cp data-sourcepos=\"9:3-9:177\"\u003e\u003cstrong\u003eAtomic Forged Pistons:\u003c\/strong\u003e are custom designed by Atomic and made by Icon pistons to be a hugely strong yet quiet piston \u003cspan style=\"text-decoration: underline;\"\u003esuitable for upto 1000hp atc.\u003c\/span\u003e with low friction coated side skirts and noise reducing geometry around the crown and skirt we are able to have a 2618 alloy forged piston that isn't noisy when the engine is cold. The structural features within the piston provide superior strength and durability and help the piston to withstand high cylinder pressures and temperatures generated by sustained load. So whether you're giving it a squirt here and there, roll racing every week or chasing times, these pistons will be able to handle it. \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-sourcepos=\"11:1-12:0\"\u003e\n\u003cp data-sourcepos=\"11:3-11:199\"\u003e\u003cstrong\u003eAtomic Superleggera H-Beam Forged Billet Conrods:\u003c\/strong\u003e Some people call them billet, some call them forged so we've just called them both! They're made from steel, they have never been broken by anyone so far (that we know of!) and they're the only Barra rods to have a direct oil feed to the gudgeon pin and piston crown. This has a huge benefit to piston cooling and wrist pin lubrication both of which increase durability and detonation resistance. \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-sourcepos=\"13:1-14:0\"\u003e\n\u003cp data-sourcepos=\"13:3-13:164\"\u003e\u003cstrong\u003ePrepped Crankshaft:\u003c\/strong\u003e Every crankshaft is inspected and measured by Atomic before being prepped to get the journals linished and oil holes chamfered. We clean up the seal track to ensure good sealing and make sure the crank is free from defects. \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-sourcepos=\"15:1-16:0\"\u003e\n\u003cp data-sourcepos=\"15:3-15:258\"\u003e\u003cstrong\u003ePerformance Cylinder Head:\u003c\/strong\u003e The cylinder head is ported for improved airflow AND increased velocity. This not only makes the cylinder head flow more at high power and boost but also improves the low end torque and response! We use all new valves, upgraded valve springs, and new retainers for enhanced high-RPM capabilities. For those looking to push the motor we can upgrade cams, lifters, rockers for a higher redline. \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-sourcepos=\"17:1-18:0\"\u003e\n\u003cp data-sourcepos=\"17:3-17:176\"\u003e\u003cstrong\u003eHigh-Volume Oil Pump:\u003c\/strong\u003e An all-steel, high-volume oil pump provides increased oil flow and pressure to maintain critical lubrication and cooling under demanding conditions.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-sourcepos=\"19:1-20:0\"\u003e\n\u003cp data-sourcepos=\"19:3-19:217\"\u003e\u003cstrong\u003ePrecision Clearancing and Assembly:\u003c\/strong\u003e Each 550 GT-A engine package undergoes meticulous assembly by our skilled technicians, including precise clearancing of critical components to ensure optimal fit and function.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-sourcepos=\"21:1-21:29\"\u003e\u003cstrong\u003eTechnical Specifications:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-sourcepos=\"23:1-26:0\"\u003e\n\u003cli data-sourcepos=\"23:1-23:104\"\u003e\n\u003cstrong\u003ePower Output:\u003c\/strong\u003e Capable of handling 1000hp horsepower with appropriate supporting modifications.\u003c\/li\u003e\n\u003cli data-sourcepos=\"24:1-24:110\"\u003e\n\u003cstrong\u003eApplications:\u003c\/strong\u003e Suitable for high-performance street use, track days, and various motorsport applications.\u003c\/li\u003e\n\u003cli data-sourcepos=\"25:1-26:0\"\u003e\n\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Available for both SOHC and DOHC Ford Barra engines (BA-FG). Note: SOHC applications may require modification for oil pump clearance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-sourcepos=\"27:1-27:13\"\u003e\u003cstrong\u003eBenefits:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-sourcepos=\"29:1-33:0\"\u003e\n\u003cli data-sourcepos=\"29:1-29:111\"\u003e\n\u003cstrong\u003eIncreased Power and Torque:\u003c\/strong\u003e Delivers significant gains in horsepower and torque throughout the RPM range.\u003c\/li\u003e\n\u003cli data-sourcepos=\"30:1-30:86\"\u003e\n\u003cstrong\u003eEnhanced Durability:\u003c\/strong\u003e Engineered to withstand the rigors of high-performance use.\u003c\/li\u003e\n\u003cli data-sourcepos=\"31:1-31:76\"\u003e\n\u003cstrong\u003eImproved Reliability:\u003c\/strong\u003e Reduces the risk of engine failure under stress.\u003c\/li\u003e\n\u003cli data-sourcepos=\"32:1-33:0\"\u003e\n\u003cstrong\u003ePrecision Engineering:\u003c\/strong\u003e Meticulous assembly and quality components ensure optimal performance and longevity.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-sourcepos=\"34:1-34:40\"\u003e\u003cstrong\u003eContact Atomic Performance Products:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-sourcepos=\"36:1-36:114\"\u003eFor detailed specifications, pricing, and to discuss your specific requirements, please contact our team directly.\u003c\/p\u003e\n\u003cp\u003eAtomic 550 GT-A is a high performance street engine that can handle nearly 900hp. It's very smooth and quiet but able to stand up to punishment. These can be optioned with 14mm head studs to keep the cylinder head down reliably around 1000hp. We test run every engine in house on a test rig and we record all measurements and provide them. We can ship worldwide in our custom made wooden engine crates.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003eDesigned for customers who are looking at making around V8 Supercar power levels (without the $250,000 engine bill!)  the 550 GT-A fits the bill nicely. As a more robust version of the StreeTorquer Series engines, the 550 GT-A was only released in 7\/2022 due to customer demand for an engine that fits the important balance of serious power and affordability. The 550GT-A fills the bill nicely.\u003c\/p\u003e\n\u003cp\u003eStarting with an ultrasonic tested thick-wall block, we add such components as our own custom forged pistons with 4 valve reliefs, our legendary H-Beam oil feeder conrods, a prepped crank and cylinder head, new valves and performance valvetrain, an all steel oil pump followed by precision clearancing and assembly are only a few of the features that make up the 550 GT-A package.\u003cbr\u003e\u003cbr\u003eEvery Atomic built engine is measured and clearanced by an experienced engine assembly specialist to tight tolerances developed by Atomic since 2004. We love paperwork (unusual right!) so your whole build is \u003cspan style=\"text-decoration: underline;\"\u003ethoroughly\u003c\/span\u003e documented and stored in our system along with your order number. That means that even 5 years later we can tell you what clearances you had, the ring gaps, what oil pressure your engine had on idle, how thick the bores are.... etc. After assembly we test run your engine on our engine test bench for several hours. We monitor vitals such as lifter bleed, ring seal, tensioner engagement, cold through hot oil pressure to make sure your engine is running as it should. When we're done we will give you a care package with gaskets, merch, build sheet with all clearances etc. \u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eHaving rebuilt well over 500 Barra engines since 2004 we're not mucking around. We have a process, we follow it and we test it so you can send it!\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c!----\u003e","brand":"Atomic Performance Products","offers":[{"title":"BA","offer_id":42367506907217,"sku":"306390","price":16490.0,"currency_code":"AUD","in_stock":true},{"title":"BF","offer_id":42367506939985,"sku":"306391","price":16490.0,"currency_code":"AUD","in_stock":true},{"title":"FG","offer_id":42367506972753,"sku":"306392","price":16490.0,"currency_code":"AUD","in_stock":true},{"title":"Retrofit","offer_id":42367507005521,"sku":"306393","price":16490.0,"currency_code":"AUD","in_stock":true},{"title":"Core Exchange","offer_id":42367507038289,"sku":"306394","price":15990.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2115\/6365\/files\/Atomic_550_GT-A_Street_Spec_1000hp_Capable_38544acf-545b-41c5-9175-f1740da9557c.jpg?v=1779068391","url":"https:\/\/longboostperformance.com\/products\/atomic-550-gt-a","provider":"LongBoost Performance Parts","version":"1.0","type":"link"}