i gotta b20 block an i want to do a b20 or ls VTEC but i know its rough on the bottoms but there FAST AS HELL... what if i did a b20 in a 90ls integra wit the same wiring harness an ls head an tranny an intake mani??? an just build it like that.. like lil things tho just bolt on's?? wouldnt it be fast just like that.. i8m not trying to put a whole lotta money in this shit an i got everything that i listed just tryin to figure out if its been done an how it ran.....

 

b20 and ls heads are identical unless you happen to come across a jdm b20 p8r head which has 84mm combustion chambers and vtec size intake valves. what you're proposing to do is basically a stock b20.

 

bro when i had the b20 head it looked nothing like the ls head INSIDE.... it was weard... an really all ui wanna do is have a sleeper b20 an the ls head valve cover is different... an would it get a big jump on speed wit my b20 vs. the ls....

 

you do know b20 and ls valve covers are interchangeable?

 

i dont have the b20 valve cover or the head anymore... i just have the block.. an when i did, if i did... i was gonna get new clutch good bolts for the head an b16 lower gears for the tranny... but im not sure if i should just stick wit the ls block...

which one is stronger bottoms???

 

b18b blocks are relatively stronger only because their sleeves arent one piece like the b20's.

 

All you seem to be doing is switching the block to a b20. It's perfectly fine and safe. Your car will have more oomph but overall it won't be that much faster.

In all honesty I'd leave your car alone, and just ride it out, save your money for routine maintenance.