dwindsor94Z

Is there a way to see if the block in a 94Z28 is the original one or not?

Injuneer

There is a derivative of the original vehicle's VIN embossed into the rear edge of the block, and a matching number on the tranny. Shoebox has a photo showing the location of the engine VIN derivative on his website.

shoebox

...specifically, right here.

dwindsor94Z

You guys are awesome. Thanks!

matLT1

Interesting.....

dwindsor94Z

Is their anything "official" from GM that states that is what that number means? Just asking b/c my brother is fighting a case now with a local shop that charged him a core charge b/c they said his was not rebuildable, but then stuck the SAME damn block back into the car. The numbers match the VIN/Trans case, everything. Someone that represents the shop claimed that you can't tell by that.

I know thats pure BS, but just need something official if you know what I mean.

Appreciate the help guys!!!!

Projectz28

thats BS...

they are numbered like that for a reason. They are numbered so you know what engine and what trans were in what car.

Your bro should win that case without even going to court... any lawyer should have that thrown out based on stupidity

The VIN (Vehicle Identification Number) ID's the car. The serial number of the block and the trans are also the serial number of the car. Serial number is the last 6 numbers (I think, could be wrong) of each ID.

I believe its law that all vehicles in the US are numbered with these ID's. All vehicle manufactures number their vehicls, engine and trans. Helps with fighting theft.

Executioner2k5

ok i have a question what if the block doesnt have that number etched into it? i had my motor rebuilt (this sint my original block) but it doesnt have that number etched in it

shoebox

I don't know how it could be more official. That is the way GM stamped it for identification.

shoebox

It might have been a replacement block.

Executioner2k5

thats what im trying to figure out because i believe my block was a 4bolt and i heard they only got 4 bolts with the replacement motors and the only way to get another 4bolt is find and LT4 or the rebuilder used an LT4 block

Projectz28

the Vette got a 4 bolt block. Its possible that there was a motor replaced at a dealer under warranty and recieved a 4 bolt block. No real way to ever know that for sure.

BTW, I have a 4 bolt block in use with my new SR motor. I bought it on Ebay and it came out of a vette.

shoebox

If it had no stampings (and they were not purposely ground off), then it was a replacement block and was likely 4 bolt main because of that.

Executioner2k5

ok thanks i will find out for sure when i finally get to pulling my pan cause im not gonna pull my pan untill i get my engine bay done

Injuneer

ALL Corvettes had 4-bolt blocks. They are not unique to the LT4.