{"product_id":"klm-s58-stage-3-engine-build-1-300-whp","title":"KLM S58 Stage 3 Engine Build (1,300 WHP)","description":"\u003cp\u003e\u003cstrong\u003eYou will receive an email after placing this order to confirm freight and final shipping cost.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eStage 3 keeps the factory 3.0L stroke and shifts the focus to the head. We do 5-axis CNC porting in-house along with a full valve job, smoother ports, less turbulence, better seal, more air moving through the head at the same displacement. Rods, pistons, bearings, and cams carry over from Stage 2, and oversized ARP studs with the in-house machining that fits them carry through as well.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eIt is built to safely support tuning up to 1,300 WHP, not a promise that your engine makes 1,300 WHP out of the box. Send us your engine or buy a core from us and we build the whole thing start to finish. Either way it comes back ready to run once it's through break-in.\u003cbr\u003e\u003cbr\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cstrong\u003e\u003cem\u003eKey Specs\u003c\/em\u003e\u003c\/strong\u003e\u003cbr\u003eRated to safely support tuning up to 1,300 WHP.\u003cbr\u003eEvery build follows our researched and validated Stage 3 spec. Individual engines are not dyno tested.\u003cbr\u003eBreak-in period required. Instructions included with every build.\u003cbr\u003eSend in your own engine or purchase a core from KLM for a complete build.\u003cbr\u003eTurnaround is typically 3 to 4 weeks, occasionally longer depending on parts availability and build queue.\u003cbr\u003e\u003c\/p\u003e","brand":"KLM Race","offers":[{"title":"Default Title","offer_id":43465063759946,"sku":null,"price":20999.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0614\/5431\/9690\/files\/f0e4b4b7-S58-Stage-3.jpg?v=1774364137","url":"https:\/\/www.klmrace.com\/products\/klm-s58-stage-3-engine-build-1-300-whp","provider":"KLM Race","version":"1.0","type":"link"}