let me say this is a great website. i'm having a problem with my 292. i put this engine in over a year ago and it ran fine after i changed the head- first on was cracked. now all of a sudden when i set it to specs it sputters and won't accelerate. when i set it by ear and a vacume gauge it runs fine. timing should be 4 deg BTDC but i have to set it farther mabey 15 deg BTDC i don't know for sure its off the tab. i need some insight because i have no auto training and only know what i have read. thanks hoggyrubber