i have a 92 LS motor im testing the waters on. still in car running, about to go another route. im unsure of the milage. this is the short block only. no tranny, dizzy alternator, intake mani or ex manni. although i can throw in a bare LS intake mani.im not in a rush to sell but lookin to sell out right. no trades. lmk......steve 352-364-1712