So I recently blew my motor(oil pan of death...) I cant find a aluminum 6.0 so I'm going with a iron block and plan on building out to a 402 stroker. I have a BTR Stage 3 Cam (specs: 218/224 .553/.553 110+0) Putting in ls7 lifters all my pushrods and rockers are good. I gotta get my heads cleaned up with new valves( motor only blent one valve slightly). My heads are a 799 and 243(dont know why they are like that saw that some came from the dealer like that) which already been worked on from the guy I bought the truck from. So my question is this, I know the heads are compressed to 10:9:1 but with the stroker do I need to up the compression cause it will be a 402? And if so to what compression? Still trying to figure this whole motor thing out and will appreciate any help.