{"product_id":"comp-cams-xfi-hydraulic-roller-camshaft-gm-ls1-ls6-270-advertised-duration-fuel-injection-optimised-street-strip-54-500-11","title":"COMP Cams XFI Hydraulic Roller Camshaft | GM LS1 \/ LS6 | 270° Advertised Duration | Fuel Injection Optimised | Street \/ Strip | 54-500-11","description":"\u003ch2\u003eCOMP Cams XFI Hydraulic Roller Camshaft – GM LS1 \/ LS6 | 270° Advertised Duration | Fuel Injection Optimised | 54-500-11\u003c\/h2\u003e\n\u003cp\u003eUnlock the full performance potential of your GM LS1 or LS6 with the COMP Cams XFI (Xtreme Fuel Injection) hydraulic roller camshaft — engineered specifically for fuel-injected LS applications where the ECU and fuel delivery system play a critical role in realising cam performance gains. The XFI series is COMP Cams’ dedicated fuel injection-optimised cam line, with lobe profiles and duration specifications selected to work within the operating parameters of the factory and aftermarket LS ECU — delivering strong street\/strip performance gains without the idle quality and drivability compromises that can come from cams designed for carbureted applications.\u003c\/p\u003e\n\u003ch3\u003eXFI – Why Fuel Injection Optimisation Matters for LS Cams\u003c\/h3\u003e\n\u003cp\u003eThe LS engine’s fuel injection system — whether factory MAF-based or aftermarket — uses airflow and RPM data to calculate fuel delivery and ignition timing. Aggressive cam profiles with very high duration and overlap can confuse the factory MAF sensor and ECU, causing poor idle quality, rough cold starts, and difficulty tuning. COMP Cams’ XFI series is specifically profiled to minimise these issues — delivering aggressive performance gains while remaining more compatible with fuel injection tuning than equivalent carbureted cam profiles. An ECU tune is still required, but the XFI profile makes the tuning process more straightforward.\u003c\/p\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eXFI Lobe Profile – EFI Optimised:\u003c\/strong\u003e The XFI lobe profile is engineered for fuel-injected LS applications — with duration and overlap specifications selected to work within the operating parameters of the LS ECU and MAF-based fuel delivery system. Delivers strong mid-to-upper RPM power gains while maintaining better idle quality and cold-start behaviour than equivalent carbureted cam profiles\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e270° Advertised Duration:\u003c\/strong\u003e 270° advertised duration places this cam in the performance street\/strip range for LS applications — providing strong mid-to-upper RPM power with a noticeable performance cam idle character. Suitable for modified LS1\/LS6 engines with supporting cylinder head, intake, and exhaust modifications. Verify this duration is appropriate for your specific build targets and supporting components before ordering\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHydraulic Roller Lobe:\u003c\/strong\u003e Roller lifter compatibility eliminates the sliding friction of flat-tappet cams, allowing more aggressive lobe profiles with faster ramp rates. Hydraulic operation eliminates the need for periodic valve lash adjustment. The LS engine family uses a hydraulic roller valvetrain from the factory, making hydraulic roller cam upgrades a direct-fit replacement for the OEM cam\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLS1 \/ LS6 Platform Fitment:\u003c\/strong\u003e The LS1 and LS6 share the same cam journal dimensions and firing order — this cam fits both engine variants directly. The LS1 (5.7L, 345 HP factory) was used in the 1998–2002 Camaro SS, Firebird\/Trans Am, and Corvette C5. The LS6 (5.7L, 385–405 HP factory) was used in the 2001–2004 Corvette C5 Z06 and 2004–2005 Cadillac CTS-V\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCOMP Cams Quality:\u003c\/strong\u003e COMP Cams is one of the most respected camshaft manufacturers in the performance aftermarket — with decades of experience in cam design, metallurgy, and lobe profile engineering for street, strip, and racing applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eRecommended Supporting Modifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eUpgraded valve springs rated for the cam’s lift and RPM range — consult COMP Cams’ cam card for spring specifications (factory LS valve springs are typically not adequate for performance cam upgrades)\u003c\/li\u003e\n\u003cli\u003eMatching hydraulic roller lifters if replacing OEM lifters (recommended on high-mileage engines)\u003c\/li\u003e\n\u003cli\u003ePushrods of the correct length for your specific head and block combination\u003c\/li\u003e\n\u003cli\u003eECU retune — mandatory after cam installation on any fuel-injected LS. Do not drive on the factory tune with an aftermarket cam installed\u003c\/li\u003e\n\u003cli\u003ePerformance intake manifold, cylinder heads, and exhaust to maximise the cam’s potential\u003c\/li\u003e\n\u003cli\u003eTiming chain and cam phaser lock-out (if applicable) — consult your tuner\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eGM LS1 5.7L — Chevrolet Camaro SS (1998–2002)\u003c\/li\u003e\n\u003cli\u003eGM LS1 5.7L — Pontiac Firebird \/ Trans Am (1998–2002)\u003c\/li\u003e\n\u003cli\u003eGM LS1 5.7L — Chevrolet Corvette C5 (1997–2004)\u003c\/li\u003e\n\u003cli\u003eGM LS6 5.7L — Chevrolet Corvette C5 Z06 (2001–2004)\u003c\/li\u003e\n\u003cli\u003eGM LS6 5.7L — Cadillac CTS-V (2004–2005)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBrand: COMP Cams\u003c\/li\u003e\n\u003cli\u003ePart Number: 54-500-11 (COMP Cams P\/N: 54-500-11)\u003c\/li\u003e\n\u003cli\u003eSeries: XFI (Xtreme Fuel Injection)\u003c\/li\u003e\n\u003cli\u003eCam Type: Hydraulic Roller\u003c\/li\u003e\n\u003cli\u003eAdvertised Duration: 270°\u003c\/li\u003e\n\u003cli\u003eApplication: GM LS1 \/ LS6 5.7L\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e ECU retune is mandatory after cam installation — do not drive on the factory tune with an aftermarket cam. Valve spring upgrade is required — factory LS springs are not adequate for most performance cam profiles. Degree the camshaft during installation to verify correct installed centerline. A complete cam installation requires matching lifters, correct-length pushrods, and appropriate valve springs — consult COMP Cams’ cam card for the full supporting component list. Contact us if you have questions about fitment or component selection for your specific build.\u003c\/p\u003e","brand":"COMP Cams","offers":[{"title":"Default Title","offer_id":51262547919015,"sku":"CCA54-500-11","price":719.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0555\/8344\/1063\/files\/CompCams54-500-11.jpg?v=1787768709","url":"https:\/\/www.straightsiximports.com\/products\/comp-cams-xfi-hydraulic-roller-camshaft-gm-ls1-ls6-270-advertised-duration-fuel-injection-optimised-street-strip-54-500-11","provider":"Straight Six Imports","version":"1.0","type":"link"}