{"product_id":"c4-corvette-1984-1991-long-system","title":"American Racing Headers - C4 Corvette 1984-1991 Long System","description":"\u003ch1\u003eAmerican Racing Headers - C4 Corvette 1984-1991 Long System\u003c\/h1\u003e\u003cp\u003e\u003c\/p\u003e\u003cp\u003eThis System Fits -  C4 Corvettes 5.7L V8 1984-1991\u003c\/p\u003e\u003cdiv class=\"table\"\u003e \u003cdiv class=\"table-cell middle\"\u003e \u003cdiv class=\"no-height\"\u003e\n\u003cp data-mce-fragment=\"1\"\u003eFor C4 Corvette owners, American Racing Headers has finally answered the call. Your long awaited C4 systems are here! With features you'd expect from ARH including all 100% US made 304 S\/S construction, 3\/8\" thick flanges with hand ported inlets, merge collectors with scavenger spikes, your choice of 1-3\/4\" or stepped 1-3\/4\" X 1-7\/8\" primaries and our 3\"  X-Pipe equipped exhaust (with or without our 200 cell metallic substrate cats), it simply doesn't get better. The system is designed to splice into your factory or aftermarket exhaust with mild adapting. Will also work with straight or angle plug heads. Expect minimum gains of 25 RWHP.\u003c\/p\u003e \u003cp data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eNote:\u003c\/strong\u003e All C4 Corvette customers will need to specify the following in the Notes to Seller at checkout to ensure they get the exact system for their specific application.\u003c\/p\u003e \u003cp data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eAll 84-91 C4 Corvettes will need a OEM GM LT1 Oil filter adapter to install these systems. Without this adapter these systems will not fit.\u003c\/span\u003e\u003c\/p\u003e \u003cul\u003e \u003cli data-mce-fragment=\"1\"\u003eExact Model Year\u003c\/li\u003e \u003cli data-mce-fragment=\"1\"\u003eWith or Without EGR\u003c\/li\u003e \u003cli data-mce-fragment=\"1\"\u003eCoupe or Convertible\u003c\/li\u003e \u003cli data-mce-fragment=\"1\"\u003eManuel or Automatic Transmission\u003c\/li\u003e \u003c\/ul\u003e \u003cp data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eProduct features on this system includes:\u003c\/strong\u003e\u003c\/p\u003e \u003cul data-mce-fragment=\"1\"\u003e \u003cli data-mce-fragment=\"1\"\u003e100% Made in the USA - Never Outsourced\u003c\/li\u003e \u003cli data-mce-fragment=\"1\"\u003eMade entirely of 304 stainless steel\u003c\/li\u003e \u003cli data-mce-fragment=\"1\"\u003e3\/8\" thick laser-cut flanges for a warp-free seal\u003c\/li\u003e \u003cli data-mce-fragment=\"1\"\u003eHand-ported TIG welded inlets\u003c\/li\u003e \u003cli data-mce-fragment=\"1\"\u003eOptimized primary tube routing for superior fit and performance\u003c\/li\u003e \u003cli data-mce-fragment=\"1\"\u003eMerge collectors with scavenger spikes\u003c\/li\u003e \u003cli data-mce-fragment=\"1\"\u003eCatted systems feature 200 cell metallic substrate catalytic converters for extreme durability\u003c\/li\u003e \u003c\/ul\u003e \u003cp data-mce-fragment=\"1\"\u003e\u003cspan style=\"color: #ff0000;\" data-mce-fragment=\"1\" data-mce-style=\"color: #ff0000;\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eAttn.\u003c\/strong\u003e\u003c\/span\u003e All ARH products are exclusively manufactured for racing purposes. Installing these products on any vehicle eliminates the legal use, in any capacity, on public roads\/highways and may be subject to fines and\/or criminal liability as per the Clean Air Act.\u003c\/p\u003e\n\u003c\/div\u003e \u003c\/div\u003e \u003c\/div\u003e","brand":"American Racing Headers","offers":[{"title":"1-3\/4\" x 3\" \/ With Cats \/ Coupe - Automatic Transmission - EGR","offer_id":62704022519967,"sku":"C4-84134300LSWC","price":2344.7,"currency_code":"USD","in_stock":true},{"title":"1-3\/4\" x 3\" \/ With Cats \/ Coupe - Automatic Transmission - EGR Delete","offer_id":62704022552735,"sku":"C4-84134300LSWC","price":2344.7,"currency_code":"USD","in_stock":true},{"title":"1-3\/4\" x 3\" \/ With Cats \/ Coupe - Manual Transmission - EGR","offer_id":62704022585503,"sku":"C4-84134300LSWC","price":2344.7,"currency_code":"USD","in_stock":true},{"title":"1-3\/4\" x 3\" \/ With Cats \/ Coupe - Manual Transmission - EGR Delete","offer_id":62704022618271,"sku":"C4-84134300LSWC","price":2344.7,"currency_code":"USD","in_stock":true},{"title":"1-3\/4\" x 3\" \/ With Cats \/ Convertible - 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