I'm curious about the compatabilty of the two engines. I will probably be doing this backward from most but my purpose is not necessarily to gain hp for racing. I am in the market for a new truck/suv but, everything in my price range has 160,000+ miles. I found a good deal on a ls1 long block from a 2001 Camaro SS. It only has 40k on it and I know thos engine was good to the owner. He did 11.4 in the 1/4mile with just bolt ons. I know the LS style intake will fit on the 5.3 truck engine if you use the fbody accessories but, thats not where I'm going. My question like I said may be backward from the norm. I was wondering if I could just swap the truck accessories & intake to the ls1 long block and call it a day. Of course I realize some tuning will be involved.