Started to do a little research and now beliving engine is not original to my car. Duz anyone know what would be the correct block code and heads #'s for an early production (dec. 1968) 1969 firebird 350 HO with manual tras?
Engine in car has block code of WN sorry couldn't get cast # or date code without removing distributor or intake as it is to hard to look behind engine. Heads are cast #48 with date code of J308. Any help on what this engine maybe? Also sounds like I atleast may have a nice set of heads here anyways as I see these being advetised as ram air heads? ANy help is appreciated.
Stephen