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Topic Review (Newest First)
09-01-2019 11:28 AM
KHanson after looking closer at the photos and some research I feel it was a bad stamping and the J is most likely a U with makes sense being a 68 295 hp 350 thanks for all your help
09-01-2019 10:32 AM
Hipster_G This site may be of help.

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

https://www.mortec.com/castnum.htm
09-01-2019 10:32 AM
BogiesAnnex1
Quote:
Originally Posted by KHanson View Post
I Have a 68 RS SS Camaro 350 Power Glide Automatic With a engine code MJ2380 is anyone able to decode?
If that is a big block it would be a period correct prefex of a 427 for a Corvette in front of an automatic, go figure? If a small block, it' most likely a Mexico built crate motor. Pull a rocker cover to get the head casting if you can't see the block casting number. The casting numbers can be a lot of help in tracking down what the motor is.

The GMPP crates use a different code from production, that leaves off the suffix. The standard Chevy production code has a prefex of 2 letters that tell where cast and assembled, a date code of numbers, then a suffix code telling application of two to three letters. Production engines on this same pad as the build code also are stamped with part of the chassis VIN number which is what is meant by the term "numbers matching" of engine and chassis.

The casting numbers will provide a rough path to determining what size and configuration of the engine; for the block's as 305 use one set of numbers, 4 inch bore like 302, 327, 350 a different set, and 400 another unique set of casting numbers. Heads can be a little trickier as there is some slop over between 305 and 350 heads and between 350 and 400 heads.

Bogie
09-01-2019 09:18 AM
KHanson Yes I now it doesnt have the right heads wondering if the motor was changed as well
09-01-2019 09:00 AM
Hipster_G You trying to figure out what the block is?
09-01-2019 08:02 AM
KHanson
engine # decode

I Have a 68 RS SS Camaro 350 Power Glide Automatic With a engine code MJ2380 is anyone able to decode?

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