Im wondering if I can't find a gsr block, and have an ls block couldn't I basically
make the gsr block.

Use the ls block, and change the crank over to the gsr, throw some forged
rods and nicer pistons, rings, put a block guard and be good to go.

Or is the gsr block more than that? Is there any other big differances?

Also is there any differance in the blocks between the b18a and the b18b blocks?

 

That is going to hurt you. Swapping the GSR stuff into the LS block isn't the greatest solution.

Keep the LS rods, crank and block and add GSR, ITR or CTR pistons and a VTEC head of your choice and you will be further ahead. Either LS block is okay.

The GSR block is basically the same except oil passages, oil squirters and webbing.

 

FYI this is probably better off in the All Motor forum.

 

umm, whats webbing? and is there any way i can make the ls block
have oil squirters.

So would getting those cams be just as good compared to a stock
gsr block?

And if im going all motor, with vtec whats a better block,
the b18a/b b18c or the b20 (crv not prelude)

 

i agree go ls vtec, instead of just turning into a gsr block. the ls is a lil better

 

Just use the LS block like everyone else said. There is no cheap way to make an LS have the oil squirters, and honestly, they're not really needed. Most stroked out or high horsepower gsr blocks that I see have the squirters removed and plugged off anyway.