I've been searching everywhere and found a little info through forum search but could not find anymore info then 87-91 5.0 305 engine. The guy I bought the car from said the engine was swapped from another camaro of later year , and did not have any other information for me. Running great so far! I'm guessing its from a thirdgen it is installed in a 71 camaro and has an Edelbrock 1405 carburetor on it.

Here are the numbers i have found

Drivers side: 5.0 LG SGI L069

Passenger side: 14093627

 

Under the suffix is the last of the vin of the vehicle the engine came from.
What are you wanting to know you have the casting number and know it’s a 305.

 

ahh thank you that makes perfect sense because i could not find that code anywhere LOL

 

Doesn't too much matter what it came out of. Cast iron (and aluminum) has an AMAZINGLY short memory: it carries NOTHING with it about the other car. A motor is built out of PARTS, and the end result is determined EXCLUSIVELY by the PARTS, and not what sheet metal (or even fiberglass!!) it was previously wrapped in.

Furthermore it's possible to take the HEADS off of ANY small block Chevy and put them onto ANY small block Chevy BLOCK. Only takes a few minutes. Looking up that stamping number on the BLOCK won't tell you what HEADS somebody might have put on it. It's not particularly likely that this motor is a complete factory assembly lifted straight out of something and dropped into something else: that's just simply not what usually happens in The Real World. It's FAR more likely that it's a short block from somewhere random and a pair of heads from somewhere else random and a random aftermarket cam, than an intact "motor".

Research PARTS, not stamping codes.

In those years there were basically 2 kinds of 305s: TPI & carb ones, which had one kind of heads; and TBI ones, which had some other kind of heads. Get the head casting # and it'll be immediately clear whether you have the better or the more pathetic ones, if in fact they're from those years. Other years of 262.5/265/267/283/302/305/307/327/350/400 also have heads that will bolt right up to that block. You can get acoupla quick clues from outside: are the valve cover bolts down the center (87-up) or around the edges (86-back); do they have bolt holes in the ends for the accessories to bolt to (69 to 73 up, depending on chassis) or are the ends completely blank; and so forth.

 

Sounds good yes they are center bolts so my next step will be finding the head numbers I will remove the valve covers this weekend and try to find them . I think I will also change the valve cover gaskets while I am at it. I'm pretty new but I want to learn.