I am searching for the best piston and rod combo I can use on my stock stroke 427 BBC. I want to chose a top shelf rod Crower, Carrilo etc. I plan on having a .070 bore but can stick with the .060 bore the eng presently has. I really want to find the lightest combo without sacrificing strength. So far I have only been able to find pistons that will except a 6.385 length rod. They are the KB. 772-70. They weigh 625 grams. They will yeild the 10:5 to 1 to 11:5 to 1 compression ratio I desire. I couldnt find any pistons that would accept a 6.535 rod as I imagine the pin would be in the ring grove. I thought I would ask if anyone new the longest rod with the lightest forged piston combo I can find in off the shelf parts for a 427 BBC .060 or .070 bore. Thanks to all that help I welcome all advice.