ok i nead to no how i could find out if i have a 305 or 307 in my 1985 digital berlinetta camaro how do i go about doing that ???????????

 

It's a 305.

 

not if the motoer has been changed how can i check useing the numbers on the block ?

 

How much you wanna bet it's a 305? Maybe a 350, but not a 307.


Look for the casting # behind the drivers head. It's nearly impossible to see, so good luck. Dig and scrub and you should see a 5.0 or a 5.7 on it. Also the casting number itself, which you can look up at mortec.com to confirm.

 

ok ill bite since im really amused by this thread and am curious too lol

what makes you think its possibly a 307 if its not the original 305 ?

of all the engine sizes chevy made why do you pick 307 ?

its highly unlikely, but not impossible its most likely a 305 or 350, over anything else

why dont you give us numbers off the engine


if the balancer is really small and really skinny then its pretty possible its a 307 or 327

but if its really wide then its a 305 or 350

 

http://www.mortec.com/castnum.htm

 

the cast number is
3931633 it was rebilted a wile back by a friend of mine and i am prttey sure it is a 307 because that is the moter i want it an the guy i bot it from has not lied to me yet y i wanted a 307 just because u never see them much and i like to be weard but if some 1 can find out for sure it is a 307 tell me thax

 

It's probably a 307, but that's a head casting number. You need the casting number from the block.

 

There is a reason why you don't see many 307's. They were produced using a very low nickel casting alloy that made them soft and reduced longevity.