i just joined hybridz today, but ive been on zdriver for bout 5 years. im just about to start my first v-8 swap myself. from what i understand, and dont quote me, the engine blocks are the same, everything internally is the same minus maybe the cam, because different cams would be used in trucks and vans because they are made to haul. as apposed to a v-8 out of a sport car or sedan. and the tranny would be geared different for hauling as well.. well gents thats my 2 cents. if you have any info for someone who has never swapped a v-8 into a z please, help a guy out and pm me. thanks