For example, 9 is 1969, the second is the month. The first digit is the last numeral of the year. Several digits appeared only the first two decode as the date. Up front a small flat area on the driver's side carried another code that identified the engine build date. Example is 9F02G196957 will have 196957 stamped into it. If the engine is originally installed it will have the Mustang's partial VIN stamped into the rear of the block, just above the area where the bellhousing attaches. Example of date code in casting C9ZE is C meaning the decade, 9 meaning year, Z meaning car line, E meaning Eng. A2: Casting numbers on a BOSS 302 should be C80E-6015-B, C8FE-6015-B for early '69. This is possible since I have a D0ZE-A block cast in late June 69. I read that late '69 cars were built with D0ZE-A blocks.
These blocks were used for a time in place of the C9 castings. These are the race block castings not machined for dry deck. What and when? What is the correct engine casting numbers for a BOSS 302 block? What casting date code ranges should be on a BOSS 302 block? A1: My car 9F02G194310 has its original block which is a C8FE casting. heres a copy and paste from some other forums talking about serial numbers on boss 302s: It's an EJ25 engine, serial #P085832.Īny help or info would be much appreciated, Thanks.A boss 302 will have thread in freeze plugs, so if the freeze plugs dont thread into the block then its just a standard block. I'm not the first to ask but there were no answers in any of the other threads that I could find. I was trying to find out what year the engine was built so that I could get the proper parts for it but no one seems to know what these numbers mean. The timing belt and tensioners were redone when the engine was installed about 40K miles ago.
It's a smooth running engine and has about 75K miles on it total now. I recently bought a 2002 OBW with a replaced Japanese "low mileage" used engine, (about 35K miles). The numbers must mean something as Head Gasket manufacturers have specific gaskets for certain number ranges, yet no one seems to know what else these numbers mean, or if a manufacturing date can be found from them. The six digit number on the engine, close to the transmission on the drivers side is the number. I've looked everywhere on line, called the local Subaru dealer, checked the forum here, but no answer to this question.
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