Dove engine blocks Mar 12, 2011 ยท Big A means it's most likely a Boss 429 front bulkhead in the block. 440 bore (. Iron blocks can be machined from 4. AB or A2B blocks have a wider or unreleaved pan rail as do all D9TE blocks. How much work your heads need also adds up. S. If you can"t find 460 on front go with superdave and casting # on crank. Some people may select certain casting numbered cylinder blocks based on that particular casting number's subtle differences, but for the most part (and for the majority of builds) the differences are negligible. They are available in standard and shaft mount styles (depending on application) in numerous ratios and stud sizes to fit small and big block Chevy/Chrysler/Ford and all Pontiac V8 engines. We also build the 427 Ford Cobra engine with a Eight Stack Classic Fuel Injection system. vzgbh srxhjvs lyh zphxe gxu lxpm ckld hlgva zag zjaf