[quote=GTX MATT]It was a stock bore '78 440 that they resealed and painted orange and put a composition head gasket on (assuming .039 fel pro?). Heads were stock 452s that they cut the guides and changed the springs on. Dulcich mentioned he measured the pistons .155 down

Ok, I guess I missed the part where they specified 452s being used. I thought they used the stock RV heads.? 452s are actually pretty decent in stock from.. Relative to what was available back then. Perhaps some RV engines came stock with 452s ? The 1973 RV 440 I have on the stand in my garage has 213s on it i believe.. the ones with the extra coolant passages = junk.