Hot Rod Forum : Hotrodders Bulletin Board - Reply to Topic -- Hot Rod Forum

Register FAQ Search Today's Posts Unanswered Posts Auto Escrow Insurance Auto Loans Advertise
Hot Rod Forum : Hotrodders Bulletin Board > Tech Help> Hotrodding Basics> engine # decode
User Name
lost password?   |   register now

Thread: engine # decode Reply to Thread
Send Trackbacks to (Separate multiple URLs with spaces) :

Register Now

In order to be able to post messages on the Hot Rod Forum : Hotrodders Bulletin Board forums, you must first register.
Please enter your desired user name (usually not your first and last name), your email address and other required details in the form below.
User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:
Please select your insurance company (Optional)


Additional Options
Miscellaneous Options

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.
09-01-2019 10:32 AM
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.

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
engine # decode

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

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

All times are GMT -6. The time now is 03:17 AM.

Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2020, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2020 DragonByte Technologies Ltd.
Copyright 1999 - 2012. All Rights Reserved.