Quote Originally Posted by Goinfasterthanu
wow.... some useless info here.... I do know this , i would do the LS... The b20 has MUCH more thin sleeves.... Drop a set of forged piston's and rods in and your good to go for 400whp on a ls.. The sleeves in b20's will blow out a lot sooner tha a LS.. I also think the b18b head flows better , but dont quote me on that...