Where exactly are those dopey little numbers?

[jhellwig]

Where exactly are the numbers on the block of a small block chevy? Specificaly the ones that tell what the motor is and where it came from and all that good junk. I have asked people this question and they don't seam to reside where the say they are. My 83 blazer was supposed to have a 305 in it but the way the engine compartment looks makes me think that engine has been swaped.


Oh I suppose that I also need to know a web site that I can find out what those numbers mean.

And......................................................go.

 

[colbystephens]

someone will get on with the website - i'm not sure off hand. however, i believe that the numbers are, unfortunately, on the back of the motor just below the driver's side head. they should be on a ledge of the block which is parallel to the ground such that you could see those numbers if you were to look straight down over the back of the head - assuming you can get YOUR head in there w/ out removing the hood. anyway - that's where they are on my block - which happens to be a 6.2. conveniently on mine, the number 6.2 is printed on the front of the block on the same type of surface as the other numbers under the front passenger side of the head.

 

[big83chevy4x4]

they're on a small pad under the alternator, sticks out from under the head. it will have 2 sets of numbers 1 that matches the serial of the VIN if its original, and the other saying where/when the motor was built. you need the last 2 or 3 letters of this.
then go here and look it up.

 

[jhellwig]

The link doesn't work for me.


Hope fully I find the number on the front of the block. One person told me it was on the ear below the head on the drivers side but I must be blind or it isn't there.


Thanks.

 

[DEMON44]

http://www.mortec.com/

 

[beater_k20]

http://www.mortec.com/

wont tell you what it came out of, and in the case of a 4.00" bore block (302/327/350) wont be able to tell you what it is, just that it is a 4.00" bore block (the majority of them are 397001 or 3970010). the number i mentioned will come up as all 3, a 302, a 327, and a 350, available in both 2 and 4 bolt mains.

you need the 3 letter suffix code from under the alternator in front of the cylinder head.

 

[big83chevy4x4]

the link works for me, go to www.73-87.com click on chevy id, then on small block suffix codes. or you can go to www.nastyz28.com then numbers decoding, then chevy engine suffix codes, they have the same exact information

http://www.73-87.com/chevy_ids/scmenu2.htm
http://www.nastyz28.com/spmenu.html

 

[DEMON44]

That was only for # location, I should have mentioned that, just got lazy....

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