'68 Firebird History

[september10]

I've had the car for 4 years and have reached the point in my restoration project whether to replace the engine with a new crate version, or rebuild the current. The current engine is 428hp out of, I was told, a Bonneville. Originally the vehicle had a 350hp out of the Factory. I don't know who put in the 428, but was told Dealerships used to perform this conversion as a "special" package before being sold (Royal Pontiac?). If this is the case, I'd prefer to completely rebuild this engine as this car could have special value. Other than ordering the Car's History from Pontiac Historic Servces (ie. Automotive Services, Inc.) what advice can you offer to determine where my car was originally sold and how determine the origin of this 428?
Thanks a Lot!

[ThunderChicken]

I, personally, would get the PHS documentation (http://phs-online.com) and see what that says.  That will tell you any special value the car has.  That may also have the dealer conversion info if that was done.

Sounds like you have a nice project!

[firebird1968]

i agree i phs my 68 firebird 400 and got a lot of good info but i got lucky my car came with a good running engine good luck