Exhaust manifold dates

[HemiSuperBee]

Going through my junk and would like to know what is a good range for dates for exhaust manifolds for Superbirds. Intakes too. Thanks.

 

[70gtx440dana]

Your question could be answered with some detail if you provided the vin of your bird. These casr were built over a few months. Early versus late would have different date codes. In general, manifolds should be dated in the 8/69 to 11/69 range. With 11/69 being late for some cars.

 

[dadsbee]

Who knows! My 69 Bee's SPD was Feb 25th and the engine wasn't built until the 27th and the exhaust manifold on one side was cast on the 28th!