i have a few questions about the k20a3. i picked one up for dirt cheap, i have a some what build b18c1 for now so not in a hurry to finish this, but would like to build a k20 to drop in for next year.

for starter i know the k20a3 head is not the best. so question is, do i keep the a3 head and build it or go with the a2 head? if go with a2 head what else will be needed besides the head its self?

as for the block i would like to just keep it stock for now, just looking to break 200hp for now, and have room to advance after. so if suggested i could go with new rods and pistons now.

mainly i just need to know what to do with the head for starters. as if i am correct the k20a3 and a2 block is the same?

also i have read the crank is different? is this correct?

 

The search button is your friend:

https://honda-tech.com/forums/k-series-153/oem-cams-vtec-killer-style-2642386/

 

thanks. and i have been reading about the vtec killer set up. and very possible might just go with that for now.

 

NP. Probably the best bang for the buck set for a K20a3