{"title":"Spring Kits","description":null,"products":[{"product_id":"fed-pac-ls-dual-spring-kit-700-lift","title":"FED\/PAC LS DUAL SPRING KIT .700\" LIFT","description":"\u003cp\u003e\u003cspan class=\"html-span xdj266r x14z9mp xat24cr x1lziwak xexx8yu xyri2b x18d9i69 x1c1uobl x1hl2dhg x16tdsg8 x1vvkbs x4k7w5x x1h91t0o x1h9r5lt x1jfb8zj xv2umb2 x1beo9mf xaigb6o x12ejxvf x3igimt xarpa2k xedcshv x1lytzrv x1t2pt76 x7ja8zs x1qrby5j\"\u003e\u003cspan dir=\"auto\" class=\"x193iq5w xeuugli x13faqbe x1vvkbs x1xmvt09 x1lliihq x1s928wv xhkezso x1gmr53x x1cpjm7i x1fgarty x1943h6x xudqn12 x3x7a5m x6prxxf xvq8zen xo1l8bm xzsf02u\"\u003eThe FED\/PAC Dual .700 spring kit is the go-to option for LS aftermarket performance engines. This spring kit works great for high-RPM, N\/A power, and boosted setups. Frankenstein and PAC Racing worked together to bring a very versatile spring that outperforms the typical polished .660 springs on the market. We offer this spring kit for stock valve guide (.505) and bronze guide (.565) applications. \u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"html-span xdj266r x14z9mp xat24cr x1lziwak xexx8yu xyri2b x18d9i69 x1c1uobl x1hl2dhg x16tdsg8 x1vvkbs x4k7w5x x1h91t0o x1h9r5lt x1jfb8zj xv2umb2 x1beo9mf xaigb6o x12ejxvf x3igimt xarpa2k xedcshv x1lytzrv x1t2pt76 x7ja8zs x1qrby5j\"\u003e\u003cspan dir=\"auto\" class=\"x193iq5w xeuugli x13faqbe x1vvkbs x1xmvt09 x1lliihq x1s928wv xhkezso x1gmr53x x1cpjm7i x1fgarty x1943h6x xudqn12 x3x7a5m x6prxxf xvq8zen xo1l8bm xzsf02u\"\u003eThese use a high-grade titanium retainer, black oxide steel locator, and 7mm GM valve locks. Our spring kit is a drop-in for stock heads and aftermarket heads.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"html-span xdj266r x14z9mp xat24cr x1lziwak xexx8yu xyri2b x18d9i69 x1c1uobl x1hl2dhg x16tdsg8 x1vvkbs x4k7w5x x1h91t0o x1h9r5lt x1jfb8zj xv2umb2 x1beo9mf xaigb6o x12ejxvf x3igimt xarpa2k xedcshv x1lytzrv x1t2pt76 x7ja8zs x1qrby5j\"\u003e\u003cspan dir=\"auto\" class=\"x193iq5w xeuugli x13faqbe x1vvkbs x1xmvt09 x1lliihq x1s928wv xhkezso x1gmr53x x1cpjm7i x1fgarty x1943h6x xudqn12 x3x7a5m x6prxxf xvq8zen xo1l8bm xzsf02u\"\u003eKit includes: \u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"html-span xdj266r x14z9mp xat24cr x1lziwak xexx8yu xyri2b x18d9i69 x1c1uobl x1hl2dhg x16tdsg8 x1vvkbs x4k7w5x x1h91t0o x1h9r5lt x1jfb8zj xv2umb2 x1beo9mf xaigb6o x12ejxvf x3igimt xarpa2k xedcshv x1lytzrv x1t2pt76 x7ja8zs x1qrby5j\"\u003e\u003cspan dir=\"auto\" class=\"x193iq5w xeuugli x13faqbe x1vvkbs x1xmvt09 x1lliihq x1s928wv xhkezso x1gmr53x x1cpjm7i x1fgarty x1943h6x xudqn12 x3x7a5m x6prxxf xvq8zen xo1l8bm xzsf02u\"\u003eFED\/PAC .700 dual spring (16) \u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"html-span xdj266r x14z9mp xat24cr x1lziwak xexx8yu xyri2b x18d9i69 x1c1uobl x1hl2dhg x16tdsg8 x1vvkbs x4k7w5x x1h91t0o x1h9r5lt x1jfb8zj xv2umb2 x1beo9mf xaigb6o x12ejxvf x3igimt xarpa2k xedcshv x1lytzrv x1t2pt76 x7ja8zs x1qrby5j\"\u003e\u003cspan dir=\"auto\" class=\"x193iq5w xeuugli x13faqbe x1vvkbs x1xmvt09 x1lliihq x1s928wv xhkezso x1gmr53x x1cpjm7i x1fgarty x1943h6x xudqn12 x3x7a5m x6prxxf xvq8zen xo1l8bm xzsf02u\"\u003eGM LS locks (32) \u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"html-span xdj266r x14z9mp xat24cr x1lziwak xexx8yu xyri2b x18d9i69 x1c1uobl x1hl2dhg x16tdsg8 x1vvkbs x4k7w5x x1h91t0o x1h9r5lt x1jfb8zj xv2umb2 x1beo9mf xaigb6o x12ejxvf x3igimt xarpa2k xedcshv x1lytzrv x1t2pt76 x7ja8zs x1qrby5j\"\u003e\u003cspan dir=\"auto\" class=\"x193iq5w xeuugli x13faqbe x1vvkbs x1xmvt09 x1lliihq x1s928wv xhkezso x1gmr53x x1cpjm7i x1fgarty x1943h6x xudqn12 x3x7a5m x6prxxf xvq8zen xo1l8bm xzsf02u\"\u003eTitanium retainers (16) \u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"html-span xdj266r x14z9mp xat24cr x1lziwak xexx8yu xyri2b x18d9i69 x1c1uobl x1hl2dhg x16tdsg8 x1vvkbs x4k7w5x x1h91t0o x1h9r5lt x1jfb8zj xv2umb2 x1beo9mf xaigb6o x12ejxvf x3igimt xarpa2k xedcshv x1lytzrv x1t2pt76 x7ja8zs x1qrby5j\"\u003e\u003cspan dir=\"auto\" class=\"x193iq5w xeuugli x13faqbe x1vvkbs x1xmvt09 x1lliihq x1s928wv xhkezso x1gmr53x x1cpjm7i x1fgarty x1943h6x xudqn12 x3x7a5m x6prxxf xvq8zen xo1l8bm xzsf02u\"\u003eLocators for stock or bronze guides (16) \u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"html-span xdj266r x14z9mp xat24cr x1lziwak xexx8yu xyri2b x18d9i69 x1c1uobl x1hl2dhg x16tdsg8 x1vvkbs x4k7w5x x1h91t0o x1h9r5lt x1jfb8zj xv2umb2 x1beo9mf xaigb6o x12ejxvf x3igimt xarpa2k xedcshv x1lytzrv x1t2pt76 x7ja8zs x1qrby5j\"\u003e\u003cspan dir=\"auto\" class=\"x193iq5w xeuugli x13faqbe x1vvkbs x1xmvt09 x1lliihq x1s928wv xhkezso x1gmr53x x1cpjm7i x1fgarty x1943h6x xudqn12 x3x7a5m x6prxxf xvq8zen xo1l8bm xzsf02u\"\u003eViton High Heat Valve Seals (16)\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"html-span xdj266r x14z9mp xat24cr x1lziwak xexx8yu xyri2b x18d9i69 x1c1uobl x1hl2dhg x16tdsg8 x1vvkbs x4k7w5x x1h91t0o x1h9r5lt x1jfb8zj xv2umb2 x1beo9mf xaigb6o x12ejxvf x3igimt xarpa2k xedcshv x1lytzrv x1t2pt76 x7ja8zs x1qrby5j\"\u003e\u003cspan dir=\"auto\" class=\"x193iq5w xeuugli x13faqbe x1vvkbs x1xmvt09 x1lliihq x1s928wv xhkezso x1gmr53x x1cpjm7i x1fgarty x1943h6x xudqn12 x3x7a5m x6prxxf xvq8zen xo1l8bm xzsf02u\"\u003eSpring specs: \u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"html-span xdj266r x14z9mp xat24cr x1lziwak xexx8yu xyri2b x18d9i69 x1c1uobl x1hl2dhg x16tdsg8 x1vvkbs x4k7w5x x1h91t0o x1h9r5lt x1jfb8zj xv2umb2 x1beo9mf xaigb6o x12ejxvf x3igimt xarpa2k xedcshv x1lytzrv x1t2pt76 x7ja8zs x1qrby5j\"\u003e\u003cspan dir=\"auto\" class=\"x193iq5w xeuugli x13faqbe x1vvkbs x1xmvt09 x1lliihq x1s928wv xhkezso x1gmr53x x1cpjm7i x1fgarty x1943h6x xudqn12 x3x7a5m x6prxxf xvq8zen xo1l8bm xzsf02u\"\u003eMax Valve Lift: .700\" \u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"html-span xdj266r x14z9mp xat24cr x1lziwak xexx8yu xyri2b x18d9i69 x1c1uobl x1hl2dhg x16tdsg8 x1vvkbs x4k7w5x x1h91t0o x1h9r5lt x1jfb8zj xv2umb2 x1beo9mf xaigb6o x12ejxvf x3igimt xarpa2k xedcshv x1lytzrv x1t2pt76 x7ja8zs x1qrby5j\"\u003e\u003cspan dir=\"auto\" class=\"x193iq5w xeuugli x13faqbe x1vvkbs x1xmvt09 x1lliihq x1s928wv xhkezso x1gmr53x x1cpjm7i x1fgarty x1943h6x xudqn12 x3x7a5m x6prxxf xvq8zen xo1l8bm xzsf02u\"\u003eInstalled Height: 1.780\" \u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"html-span xdj266r x14z9mp xat24cr x1lziwak xexx8yu xyri2b x18d9i69 x1c1uobl x1hl2dhg x16tdsg8 x1vvkbs x4k7w5x x1h91t0o x1h9r5lt x1jfb8zj xv2umb2 x1beo9mf xaigb6o x12ejxvf x3igimt xarpa2k xedcshv x1lytzrv x1t2pt76 x7ja8zs x1qrby5j\"\u003e\u003cspan dir=\"auto\" class=\"x193iq5w xeuugli x13faqbe x1vvkbs x1xmvt09 x1lliihq x1s928wv xhkezso x1gmr53x x1cpjm7i x1fgarty x1943h6x xudqn12 x3x7a5m x6prxxf xvq8zen xo1l8bm xzsf02u\"\u003eSeat Pressure: 164 lbs @ 1.780\" \u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"html-span xdj266r x14z9mp xat24cr x1lziwak xexx8yu xyri2b x18d9i69 x1c1uobl x1hl2dhg x16tdsg8 x1vvkbs x4k7w5x x1h91t0o x1h9r5lt x1jfb8zj xv2umb2 x1beo9mf xaigb6o x12ejxvf x3igimt xarpa2k xedcshv x1lytzrv x1t2pt76 x7ja8zs x1qrby5j\"\u003e\u003cspan dir=\"auto\" class=\"x193iq5w xeuugli x13faqbe x1vvkbs x1xmvt09 x1lliihq x1s928wv xhkezso x1gmr53x x1cpjm7i x1fgarty x1943h6x xudqn12 x3x7a5m x6prxxf xvq8zen xo1l8bm xzsf02u\"\u003eOpen Pressure: 480 lbs @ 1.080\" \u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"html-span xdj266r x14z9mp xat24cr x1lziwak xexx8yu xyri2b x18d9i69 x1c1uobl x1hl2dhg x16tdsg8 x1vvkbs x4k7w5x x1h91t0o x1h9r5lt x1jfb8zj xv2umb2 x1beo9mf xaigb6o x12ejxvf x3igimt xarpa2k xedcshv x1lytzrv x1t2pt76 x7ja8zs x1qrby5j\"\u003e\u003cspan dir=\"auto\" class=\"x193iq5w xeuugli x13faqbe x1vvkbs x1xmvt09 x1lliihq x1s928wv xhkezso x1gmr53x x1cpjm7i x1fgarty x1943h6x xudqn12 x3x7a5m x6prxxf xvq8zen xo1l8bm xzsf02u\"\u003eSpring Rate: 455 lbs\/in \u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"html-span xdj266r x14z9mp xat24cr x1lziwak xexx8yu xyri2b x18d9i69 x1c1uobl x1hl2dhg x16tdsg8 x1vvkbs x4k7w5x x1h91t0o x1h9r5lt x1jfb8zj xv2umb2 x1beo9mf xaigb6o x12ejxvf x3igimt xarpa2k xedcshv x1lytzrv x1t2pt76 x7ja8zs x1qrby5j\"\u003e\u003cspan dir=\"auto\" class=\"x193iq5w xeuugli x13faqbe x1vvkbs x1xmvt09 x1lliihq x1s928wv xhkezso x1gmr53x x1cpjm7i x1fgarty x1943h6x xudqn12 x3x7a5m x6prxxf xvq8zen xo1l8bm xzsf02u\"\u003eCoil Bind Height: .984” \u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"html-span xdj266r x14z9mp xat24cr x1lziwak xexx8yu xyri2b x18d9i69 x1c1uobl x1hl2dhg x16tdsg8 x1vvkbs x4k7w5x x1h91t0o x1h9r5lt x1jfb8zj xv2umb2 x1beo9mf xaigb6o x12ejxvf x3igimt xarpa2k xedcshv x1lytzrv x1t2pt76 x7ja8zs x1qrby5j\"\u003e\u003cspan dir=\"auto\" class=\"x193iq5w xeuugli x13faqbe x1vvkbs x1xmvt09 x1lliihq x1s928wv xhkezso x1gmr53x x1cpjm7i x1fgarty x1943h6x xudqn12 x3x7a5m x6prxxf xvq8zen xo1l8bm xzsf02u\"\u003eO.D.: 1.300\" \u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"html-span xdj266r x14z9mp xat24cr x1lziwak xexx8yu xyri2b x18d9i69 x1c1uobl x1hl2dhg x16tdsg8 x1vvkbs x4k7w5x x1h91t0o x1h9r5lt x1jfb8zj xv2umb2 x1beo9mf xaigb6o x12ejxvf x3igimt xarpa2k xedcshv x1lytzrv x1t2pt76 x7ja8zs x1qrby5j\"\u003e\u003cspan dir=\"auto\" class=\"x193iq5w xeuugli x13faqbe x1vvkbs x1xmvt09 x1lliihq x1s928wv xhkezso x1gmr53x x1cpjm7i x1fgarty x1943h6x xudqn12 x3x7a5m x6prxxf xvq8zen xo1l8bm xzsf02u\"\u003eOuter I.D.: .950\" \u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"html-span xdj266r x14z9mp xat24cr x1lziwak xexx8yu xyri2b x18d9i69 x1c1uobl x1hl2dhg x16tdsg8 x1vvkbs x4k7w5x x1h91t0o x1h9r5lt x1jfb8zj xv2umb2 x1beo9mf xaigb6o x12ejxvf x3igimt xarpa2k xedcshv x1lytzrv x1t2pt76 x7ja8zs x1qrby5j\"\u003e\u003cspan dir=\"auto\" class=\"x193iq5w xeuugli x13faqbe x1vvkbs x1xmvt09 x1lliihq x1s928wv xhkezso x1gmr53x x1cpjm7i x1fgarty x1943h6x xudqn12 x3x7a5m x6prxxf xvq8zen xo1l8bm xzsf02u\"\u003eInner I.D.: .690”\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e","brand":"Frankenstein Engine Dynamics","offers":[{"title":"OEM .505 Powder Metal Guide","offer_id":47730143592701,"sku":"914024","price":399.0,"currency_code":"USD","in_stock":true},{"title":"OEM .565 Bronze Guide","offer_id":47730143625469,"sku":"914023","price":399.0,"currency_code":"USD","in_stock":true},{"title":"M311 .565 Guide","offer_id":47730143658237,"sku":"914054","price":399.0,"currency_code":"USD","in_stock":true},{"title":"F-Series .565 Guide","offer_id":47730143691005,"sku":"914046","price":399.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0754\/7489\/5101\/files\/700Springs.png?v=1781801523"},{"product_id":"fed-ls-dual-spring-kit-660-lift","title":"FED LS DUAL SPRING KIT .660\" LIFT","description":"\u003cp\u003e\u003cspan class=\"html-span xdj266r x14z9mp xat24cr x1lziwak xexx8yu xyri2b x18d9i69 x1c1uobl x1hl2dhg x16tdsg8 x1vvkbs x4k7w5x x1h91t0o x1h9r5lt x1jfb8zj xv2umb2 x1beo9mf xaigb6o x12ejxvf x3igimt xarpa2k xedcshv x1lytzrv x1t2pt76 x7ja8zs x1qrby5j\"\u003e\u003cspan dir=\"auto\" class=\"x193iq5w xeuugli x13faqbe x1vvkbs x1xmvt09 x1lliihq x1s928wv xhkezso x1gmr53x x1cpjm7i x1fgarty x1943h6x xudqn12 x3x7a5m x6prxxf xvq8zen xo1l8bm xzsf02u\"\u003eThe FED Dual .660 spring kit is a great option for LS aftermarket performance engines. This spring kit works great for high-RPM, N\/A power, and boosted setups. Frankenstein and PAC Racing worked together to bring a very versatile spring that outperforms the typical polished .660 springs on the market. We offer this spring kit for stock valve guide (.505) and bronze guide (.565) applications. \u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"html-span xdj266r x14z9mp xat24cr x1lziwak xexx8yu xyri2b x18d9i69 x1c1uobl x1hl2dhg x16tdsg8 x1vvkbs x4k7w5x x1h91t0o x1h9r5lt x1jfb8zj xv2umb2 x1beo9mf xaigb6o x12ejxvf x3igimt xarpa2k xedcshv x1lytzrv x1t2pt76 x7ja8zs x1qrby5j\"\u003e\u003cspan dir=\"auto\" class=\"x193iq5w xeuugli x13faqbe x1vvkbs x1xmvt09 x1lliihq x1s928wv xhkezso x1gmr53x x1cpjm7i x1fgarty x1943h6x xudqn12 x3x7a5m x6prxxf xvq8zen xo1l8bm xzsf02u\"\u003eThese use a high-grade titanium retainer, black oxide steel locator, and 7mm GM valve locks. Our spring kit is a drop-in for stock heads and aftermarket heads.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"html-span xdj266r x14z9mp xat24cr x1lziwak xexx8yu xyri2b x18d9i69 x1c1uobl x1hl2dhg x16tdsg8 x1vvkbs x4k7w5x x1h91t0o x1h9r5lt x1jfb8zj xv2umb2 x1beo9mf xaigb6o x12ejxvf x3igimt xarpa2k xedcshv x1lytzrv x1t2pt76 x7ja8zs x1qrby5j\"\u003e\u003cspan dir=\"auto\" class=\"x193iq5w xeuugli x13faqbe x1vvkbs x1xmvt09 x1lliihq x1s928wv xhkezso x1gmr53x x1cpjm7i x1fgarty x1943h6x xudqn12 x3x7a5m x6prxxf xvq8zen xo1l8bm xzsf02u\"\u003eKit includes: \u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"html-span xdj266r x14z9mp xat24cr x1lziwak xexx8yu xyri2b x18d9i69 x1c1uobl x1hl2dhg x16tdsg8 x1vvkbs x4k7w5x x1h91t0o x1h9r5lt x1jfb8zj xv2umb2 x1beo9mf xaigb6o x12ejxvf x3igimt xarpa2k xedcshv x1lytzrv x1t2pt76 x7ja8zs x1qrby5j\"\u003e\u003cspan dir=\"auto\" class=\"x193iq5w xeuugli x13faqbe x1vvkbs x1xmvt09 x1lliihq x1s928wv xhkezso x1gmr53x x1cpjm7i x1fgarty x1943h6x xudqn12 x3x7a5m x6prxxf xvq8zen xo1l8bm xzsf02u\"\u003eFED .660 dual spring (16) \u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"html-span xdj266r x14z9mp xat24cr x1lziwak xexx8yu xyri2b x18d9i69 x1c1uobl x1hl2dhg x16tdsg8 x1vvkbs x4k7w5x x1h91t0o x1h9r5lt x1jfb8zj xv2umb2 x1beo9mf xaigb6o x12ejxvf x3igimt xarpa2k xedcshv x1lytzrv x1t2pt76 x7ja8zs x1qrby5j\"\u003e\u003cspan dir=\"auto\" class=\"x193iq5w xeuugli x13faqbe x1vvkbs x1xmvt09 x1lliihq x1s928wv xhkezso x1gmr53x x1cpjm7i x1fgarty x1943h6x xudqn12 x3x7a5m x6prxxf xvq8zen xo1l8bm xzsf02u\"\u003eGM LS locks (32) \u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"html-span xdj266r x14z9mp xat24cr x1lziwak xexx8yu xyri2b x18d9i69 x1c1uobl x1hl2dhg x16tdsg8 x1vvkbs x4k7w5x x1h91t0o x1h9r5lt x1jfb8zj xv2umb2 x1beo9mf xaigb6o x12ejxvf x3igimt xarpa2k xedcshv x1lytzrv x1t2pt76 x7ja8zs x1qrby5j\"\u003e\u003cspan dir=\"auto\" class=\"x193iq5w xeuugli x13faqbe x1vvkbs x1xmvt09 x1lliihq x1s928wv xhkezso x1gmr53x x1cpjm7i x1fgarty x1943h6x xudqn12 x3x7a5m x6prxxf xvq8zen xo1l8bm xzsf02u\"\u003eTitanium retainers (16) \u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"html-span xdj266r x14z9mp xat24cr x1lziwak xexx8yu xyri2b x18d9i69 x1c1uobl x1hl2dhg x16tdsg8 x1vvkbs x4k7w5x x1h91t0o x1h9r5lt x1jfb8zj xv2umb2 x1beo9mf xaigb6o x12ejxvf x3igimt xarpa2k xedcshv x1lytzrv x1t2pt76 x7ja8zs x1qrby5j\"\u003e\u003cspan dir=\"auto\" class=\"x193iq5w xeuugli x13faqbe x1vvkbs x1xmvt09 x1lliihq x1s928wv xhkezso x1gmr53x x1cpjm7i x1fgarty x1943h6x xudqn12 x3x7a5m x6prxxf xvq8zen xo1l8bm xzsf02u\"\u003eLocators for stock or bronze guides (16) \u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"html-span xdj266r x14z9mp xat24cr x1lziwak xexx8yu xyri2b x18d9i69 x1c1uobl x1hl2dhg x16tdsg8 x1vvkbs x4k7w5x x1h91t0o x1h9r5lt x1jfb8zj xv2umb2 x1beo9mf xaigb6o x12ejxvf x3igimt xarpa2k xedcshv x1lytzrv x1t2pt76 x7ja8zs x1qrby5j\"\u003e\u003cspan dir=\"auto\" class=\"x193iq5w xeuugli x13faqbe x1vvkbs x1xmvt09 x1lliihq x1s928wv xhkezso x1gmr53x x1cpjm7i x1fgarty x1943h6x xudqn12 x3x7a5m x6prxxf xvq8zen xo1l8bm xzsf02u\"\u003eViton High Heat Valve Seals (16)\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"html-span xdj266r x14z9mp xat24cr x1lziwak xexx8yu xyri2b x18d9i69 x1c1uobl x1hl2dhg x16tdsg8 x1vvkbs x4k7w5x x1h91t0o x1h9r5lt x1jfb8zj xv2umb2 x1beo9mf xaigb6o x12ejxvf x3igimt xarpa2k xedcshv x1lytzrv x1t2pt76 x7ja8zs x1qrby5j\"\u003e\u003cspan dir=\"auto\" class=\"x193iq5w xeuugli x13faqbe x1vvkbs x1xmvt09 x1lliihq x1s928wv xhkezso x1gmr53x x1cpjm7i x1fgarty x1943h6x xudqn12 x3x7a5m x6prxxf xvq8zen xo1l8bm xzsf02u\"\u003eSpring specs: \u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFED .660\" Lift Spring Kit\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eInstalled Height: \u003cstrong\u003e1.800\"\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSeat Pressure: \u003cstrong\u003e149 # @ 1.800\"\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eOpen Pressure: \u003cstrong\u003e396 # @ 1.140\"\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eMax Recommended Lift: \u003cstrong\u003e.660\"\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eCoil Bind Height: \u003cstrong\u003e1.085\"\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSpring Rate: \u003cstrong\u003e375 lbs\/in\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eO.D.: \u003cstrong\u003e1.293\"\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eOuter I.D.: \u003cstrong\u003e.948\"\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eInner I.D.: \u003cstrong\u003e.670\"\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eSpring Pressure by Valve Lift\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e.575\" Lift — \u003cstrong\u003e358 #\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e.600\" Lift — \u003cstrong\u003e370 #\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e.625\" Lift — \u003cstrong\u003e380 #\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e.650\" Lift — \u003cstrong\u003e390 #\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e.660\" Lift — \u003cstrong\u003e396 #\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Frankenstein Engine Dynamics","offers":[{"title":"OEM .505 Powder Metal Guide","offer_id":47801207947517,"sku":null,"price":450.0,"currency_code":"USD","in_stock":true},{"title":"OEM .565 Bronze Guide","offer_id":47801207980285,"sku":null,"price":450.0,"currency_code":"USD","in_stock":true},{"title":"M311 .565 Guide","offer_id":47801208013053,"sku":null,"price":450.0,"currency_code":"USD","in_stock":true},{"title":"F-Series .565 Guide","offer_id":47801208045821,"sku":null,"price":450.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0754\/7489\/5101\/files\/660.png?v=1783364632"},{"product_id":"fed-dual-conical-700-lift-valve-spring-kit","title":"FED Dual Conical .700 Lift Valve Spring Kit","description":"\u003cp class=\"x_MsoNormal\"\u003e\u003cb\u003e\u003cspan\u003eNEW FED Dual Conical .700 Spring Kit - PRE-ORDER (Will ship end of October)\u003c\/span\u003e\u003c\/b\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"x_MsoNormal\"\u003e\u003cspan\u003eThe NEW FED Dual Conical .700 Spring Kit is the go-to choice for LS aftermarket performance engines. Designed for high-RPM naturally aspirated and boosted applications, this spring kit delivers improved valve-train stability, reduced mass, and increased RPM capability.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"x_MsoNormal\"\u003e\u003cspan\u003eWhile some may say a valve spring is simply a valve spring, performance comes down to what the spring can do for your application. At FED, our formula is simple: \u003cb\u003elighter mass, non-interference, increased valve-train stability, and more RPM.\u003c\/b\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"x_MsoNormal\"\u003e\u003cspan\u003eFeaturing an \u003cb\u003eovate conical design\u003c\/b\u003e, the FED Dual Conical spring uses a smaller-diameter retainer that is approximately \u003cb\u003e5 grams lighter\u003c\/b\u003e than our standard FED .700 dual spring. The non-interference design also reduces spring-to-spring contact, minimizing heat generated by rubbing friction. This helps promote longer spring life and improved durability in demanding applications.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"x_MsoNormal\"\u003e\u003cspan\u003eThe spring kit is available for both \u003cb\u003estock valve guides (.505\")\u003c\/b\u003e and \u003cb\u003ebronze valve guides (.565\")\u003c\/b\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"x_MsoNormal\"\u003e\u003cspan\u003eEach kit includes:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul type=\"disc\"\u003e\n\u003cli class=\"x_MsoNormal\"\u003e\u003cspan\u003eHigh-grade titanium retainers\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"x_MsoNormal\"\u003e\u003cspan\u003eBlack oxide steel locators\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"x_MsoNormal\"\u003e\u003cspan\u003e7mm GM valve locks\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"x_MsoNormal\"\u003e\u003cspan\u003eDrop-in fitment for stock and aftermarket cylinder heads\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"x_MsoNormal\"\u003e\u003cspan\u003eWhether you're building a high-RPM naturally aspirated combination or a serious, boosted LS engine, the \u003cb\u003eFED Dual Conical .700 Spring Kit\u003c\/b\u003e is engineered to provide the stability, durability, and RPM capability your valve train demands.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"x_MsoNormal\"\u003e\u003cspan\u003eKit includes:\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"x_MsoNormal\"\u003e\u003cspan\u003eFED Dual Conical .700 dual spring (16)\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"x_MsoNormal\"\u003e\u003cspan\u003eGM LS locks (32)\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"x_MsoNormal\"\u003e\u003cspan\u003eTitanium retainers (16)\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"x_MsoNormal\"\u003e\u003cspan\u003eLocators for stock or bronze guides (16)\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"x_MsoNormal\"\u003e\u003cspan\u003eViton High Heat Valve Seals (16)\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"x_MsoNormal\"\u003e\u003cspan\u003eSpring specs:\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"x_MsoNormal\"\u003e\u003cspan\u003eMax Valve Lift: .700\" \u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"x_MsoNormal\"\u003e\u003cspan\u003eInstalled Height: 1.800\"\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"x_MsoNormal\"\u003e\u003cspan\u003eSeat Pressure: 179 lbs @ 1.800\"\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"x_MsoNormal\"\u003e\u003cspan\u003eOpen Pressure: 490 lbs @ 1.100\"\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"x_MsoNormal\"\u003e\u003cspan\u003eSpring Rate: 444 lbs\/in\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"x_MsoNormal\"\u003e\u003cspan\u003eCoil Bind Height: .975”\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"x_MsoNormal\"\u003e\u003cspan\u003eOuter O.D.: 1.153\" Top of spring \u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"x_MsoNormal\"\u003e\u003cspan\u003eOuter O.D.: 1.315\" Bottom of spring\u003c\/span\u003e\u003c\/p\u003e","brand":"Frankenstein Engine Dynamics","offers":[{"title":"OEM .505 Powder Metal Guide","offer_id":71165507567869,"sku":"914240","price":495.0,"currency_code":"USD","in_stock":true},{"title":"OEM .565 Bronze Guide","offer_id":71165507600637,"sku":"914241","price":495.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0754\/7489\/5101\/files\/DualConical2.jpg?v=1787239255"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0754\/7489\/5101\/collections\/DualConical2.jpg?v=1791473842","url":"https:\/\/frankensteined.net\/collections\/spring-kits.oembed","provider":"Frankenstein Engine Dynamics","version":"1.0","type":"link"}