i am ready to go ls/vtec and want to kno if putting ctr pistons in would be a good idea....
would you have to modify anything to make them fit??

 

yes and no. you will ave to modify either the rod or the piston to attach the two .as far as the block if you have a standard bore block and use a standard bore ctr piston then no but if you choose to ues an over bore piston the the block will need to be machined .25 over. this set up will also yeild a rather high compression ratio so it will require some tuning.