Does anyone know if there is a problem with my 429 blowing head gaskets,or is a 11.3 to 1 compression too much for fel-pro gaskets. Would I be better off using edelbrock head gaskets for this engine or what. I may be doing something wrong. I put a new radiator(3 core) and with just a couple of half hard runs for a quarter mile or so, I keep blowing head gaskets. Please give me any advice you can. I'm stumped. Thanks.