inline six ID

Can anyone please help ID my sixer. I've looked extensively with no luck. The casting # on the block reads GM 2775308 and yes I double checked. I've checked numerous ID sights with no luck. Any help would be appreciated. thanks.

 

Have you tried here?

http://www.inliners.org/

There is a casting #'s page and if you can't find it there ask on the bulletin board. Everyones really helpful.

 

The date code would help. It'll look something like A 4 7, or C 28 3.

 

Look just above the starter. there should be a code resembling what hethen just said.

 

also read this thread

http://www.jalopyjournal.com/forum/showthread.php?t=184304

there are several numbers on the block that will help you identify it

 

Wasn't having much luck with inliners.org. The block casting #(behind the starter on the p***enger side) read as given. The casting date reads"G 10 73. OK, It's a 73. Does that make it a 250? Because I can't find that casting code.Thanks again.

 

BTW, below the casting # reads" Hecho en Mexico". Don't know if that makes any difference.

 

If it says 73 that usually means it was cast in '73 to go in a '74 year model. Which makes it a '74. The new models came out in September I believe. Or that is the way it was done in the 50's if I'm not mistaken. Someone correct me if I'm wrong.

 

mexican engines had different casting numbers, right? so it's not surprising that you can't find it in the usual lists.

Sounds like it's either a 250 or a 292, the 292 is almost 2" taller than the 250. The 250 has the side motor mounts exactly opposite each other, the 292 has one forward of the other a couple inches.

 

The code there is as follows. The letter is for the month. The numbers are for the day and year. So yours would was made on July 10th 1973 and it went into a 74 year model car or truck.

 

G1073 stands for July 10th, 1973.

 

There's also a stamped number to the rear of the dizzy that can sometimes help. Chilton and Motors manuals usually have the stamped codes listed. Otherwise, take that stamped code to your local GM dealership. They should be able to pin it down for you.

 

The # stamped on the pad behind the dizzy is ce301760. I'll go take a look at the motor mount location. Thanks squirrel and everyone I've been pulling out what's left of my hair. I cant move foward on this until I'm posotive what the hell it is.

 

sounds like an over the counter replacement engine. I had a few Mexican replacement 292s that came out of UPS trucks, they'd wear out several engines in the life of a truck...eventually they switched them over to the 4.3 V6.

 

Thanks again guys. By the look of the mounts it's a 250. BTW, does anyone know of a sight that has exploded views/ diagrams of this motor?

 

if it's a 250 the side covers will look like this



if it's a 292 they will be a lot taller, like this:



The old Chevy parts catalogs (that the dealers had) have some exploded views, the factory shop manuals have some more.....I like old Chevy publications....if you need specific info pm me I could probably scan a few pages.

 

You are the man Squirrel

 

No kidding! Thanks again.

 

CE Engine information:

"Another type of stamping found on some blocks is the "CE" code. You might see something like this "CE123456" on the front pad of the block deck on the p***enger side. The "CE" which has been known to stand for "Chevrolet Engine" or "Crate Engine" was used on blocks that were warranty replacement motors. The "CE" prefix was also used on "over the counter" blocks and engines. If a customer had problems with their original engine, while it was under warranty, it would have been replaced with an engine that was stamped "CE" with a number following it. The number following the "CE" code was the serial number for that particular engine. Also if someone purchased a new motor from the Chevrolet Parts counter, the front pad on the p***enger side of the block may have been stamped with a "CE" code.

A number of crate motors made by GM in Mexico, may have an "M" or "ML" prefix stamped into the front pad of the block followed by a series of numbers which is the serial number of that particular crate replacement motor. You may also see a raised casting on the block or heads of "Hecho en Mexico" which means "Made in Mexico". Many of the new GM crate motors are being made in Mexico. Later model crate engines, sold over the counter by Chevrolet or GM Performance Parts, may have different prefix code identifiers stamped in to the front pad on the block, such as "ZZ3" or three letter codes such as "**A". "