Video 740 Horsepower Ford with LS1 COP Advertisement ByEngine Builder on Oct 24, 2013 Custom Built Ford Engine for customer race car. 414 Cubic Inch. Using LS1 COP with BigStuff3 Engine Management system. Engine averaged 740 hp with back to back pulls.AdvertisementClick Here to Read MoreAdvertisement Advertisement In this article:BigStuff3, Ford Loading Post... Loading Post... Loading Post... Advertisement VIDEOS Watch Engine Builder's latest discussions and explanations. SHOP Shop the latest Engine Builder merchandise. SUBSCRIBE Stay up to date by signing up for the Engine Builder newsletter.