my boss has a 73 duster that he drag races . has a 400 block stroked to a 472. its an alcohol motor. now the problem he is having is new to me . after 3 1/8th mile passes the intake valley pan split down the middle. its about a 7in crack right down the center . this is one of the most bizzare thing ive ever ran into. any ideas on this one???

Last edited by 71scamp440; 06/01/10 11:18 AM.
71 scamp big block with 915 heads 727 trans