I just looked at the engine block numbers of my 1989 V6 bird and found out that they are different from what should be in there. The number is A 090317AAK Is there a way to identify what year that block is. Would it be possibly to install an older than 1989 block and crankshaft but still use the newer heads and intakemanifold so that it looks like an 1989? The whole thing shakes a lot and so my guess is that someone installed an older block where I need to use a flexplate with a counterweight. Thanks for replys.

 

You can talk to GM about it and give them your engine ID#, they can run it and tell you what year it is, what size it is, and what it "most likely" came from originally. Call your local chevrolet dealership and ask. I had that same question one time with a V8 of mine, they were able to ID it with no problem.

 

Try to find the CASTING DATE & SEE IF
it corresonds wiht the build date of your car.
I'll bet ya got the same engine still.
PLUS you having an EXPORT CAR, things COULD be ever so slightly different.
Here's a pic of a 1995 3.4 Camaro engine under my 1985 Firebrid induction/ignition system.
I do not know where to find your block casting date with out a lot of effort for no reason. What ya need to cure is teh engien shakes, not when teh engine was built.
The engine is "sick" & needs proper diagnois, not proper cast number/date identifcation.
Thes F bodies can only use a RWD 60* engine, nothing else.
ONLY RWD 60* mills came in S series trucks & F bodies passenger.

 

That s agood idea with the date thanks. About the 2.8 I checked the Haynes manual which shows the engine number to be above the water pump. However the factory manual says that the engine identification number is located above where the starter is and the VIN derivate location is near the number one cylinder slighty below the exhaust manifold. The VIN on the engine should be the same as the position 3 and 10 thur 17 of the car VIN. The engine ID: the first letter is the source of where it was built the second two numbers are the month the fourth and fifth are the day the last three digits are the type code. Maybe that helps somebody else too. What I don t know now is what that number above and behind the water pump should be good for.

 

So much for theory. On my engine there is only the number above the waterpump and not where the GM manual says it to be. And at my GM dealer they can t make anything out of the engine number. It sucks.