{"product_id":"chevy-big-block-454-502-8-sfi-certifited-harmonic-balancer","title":"Chevy Big Block 454-502 8\" SFI Certified Harmonic Balancer","description":"\u003cp\u003eUpgrade your Chevy Big Block 454-502 engines with a SFI-certified performance harmonic balancer designed to control crankshaft vibration and reduce harmful harmonics across the RPM range. Built for street and performance applications, this 8.000 in. balancer improves engine stability, durability, and overall reliability.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eVibration Control \u0026amp; Engine Protection\u003c\/strong\u003e\u003cbr\u003eDesigned to dampen crankshaft harmonics, this balancer helps reduce engine wear and improve long-term reliability—especially in performance and high-RPM applications.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDurable Performance Construction\u003c\/strong\u003e\u003cbr\u003eSteel and elastomer construction provides dependable damping and strength, while SFI certification supports high-performance and racing applications.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBalance Configuration\u003c\/strong\u003e\u003cbr\u003eIncludes removable balance weight, allowing use in either internally balanced or externally balanced Chevy Big Block engine combinations. Verify engine balance configuration before installation.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eEasy Timing \u0026amp; Installation\u003c\/strong\u003e\u003cbr\u003e60 deg. Before Top Dead Center To 0 deg. Top Dead Center timing marks simplify ignition setup, while the 8.000 in. diameter supports proper accessory alignment and straightforward installation.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBuilt for Street \u0026amp; Performance Applications\u003c\/strong\u003e\u003cbr\u003eIdeal for performance rebuilds, restorations, and upgraded engine combinations where crankshaft stability and consistent operation are critical.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCOMPATIBLE WITH\u003c\/strong\u003e\u003cbr\u003eCHEVROLET BIG BLOCK V8\u003cbr\u003e• 7.4L \/ 454 in³\u003cbr\u003e• 8.2L \/ 502 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\u003cbr\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\u003cbr\u003eDesigned for Big Block Chevy 454–502 engine platforms.\u003cbr\u003eFits applications with three crankshaft pulley bolt holes.\u003cbr\u003eVerify pulley alignment, timing pointer location, and engine balance before installation.\u003cbr\u003eNot compatible with Small Block Chevy, LS, or LT engine platforms.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSPECIFICATIONS\u003c\/strong\u003e\u003cbr\u003eBolt And Washer Included: No\u003cbr\u003eConstruction: Elastomer\u003cbr\u003eDamper Color: Black\u003cbr\u003eDamper Finish: Satin\u003cbr\u003eDamper Material: Steel\u003cbr\u003eEngine Balance: Internal\u003cbr\u003eGrade Type: Performance\u003cbr\u003eMounting Hole Quantity: 3\u003cbr\u003eOutside Diameter: 8.000 in.\u003cbr\u003ePulley Groove Quantity: 0\u003cbr\u003eSFI Rating: SFI 18.1\u003cbr\u003eTiming Marks: 60 deg. Before Top Dead Center To 0 deg. Top Dead Center\u003cbr\u003eBalance Type: Internal or External (Removable Weight Included)\u003c\/p\u003e","brand":"Top Street Performance","offers":[{"title":"Default Title","offer_id":49562183303464,"sku":"30005","price":331.96,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0901\/8356\/5608\/files\/30006_1600_1_1.jpg?v=1732639823","url":"https:\/\/www.topstreetperformance.com\/products\/chevy-big-block-454-502-8-sfi-certifited-harmonic-balancer","provider":"Top Street Performance","version":"1.0","type":"link"}