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...
even with the forged internals, you will probably need some head work to reach 400whp. you can probably get it, but it will be A LOT easier with a good valve job and p&p. yes the b20 has thinner sleeves so the ls is better for boost. good post goinfasterthanu