Quote:

What do you mean by slightly changed ?



the world block still oils the cam bearings from the main bearing saddles but they don't feed the rockers thru the #4 main/cam journal , the heads are fed directly off the main galleys so you need to put a restrictor inline , the blocks are tapped for screw in restrictors.

if you go to the new products section and find the thread about the world blocks you will see it all .