IDing a 4l60E (engine family)
Thread Starter
Joined: Sep 2007
Posts: 4,188
Likes: 292
From: woodbine, md
IDing a 4l60E (engine family) I picked up an engine and trans, sup to be a 5.3, if its the orig trans hoping the tag
will reveal the engine family. The 4 large letters are OCHD-the O would be the year,
obs 2000, has the 12 o clock bolt hole. Not sure what the rest mean, conflicting info
on line, but I think the D is the obs, 4L60E. The CH is sup to be the engine faimly
according to one source, not another, lol. Anyway, cant find what CH is, if engine
family. I realize the trans could have been swapped at one time, but doesn't look like it.
will reveal the engine family. The 4 large letters are OCHD-the O would be the year,
obs 2000, has the 12 o clock bolt hole. Not sure what the rest mean, conflicting info
on line, but I think the D is the obs, 4L60E. The CH is sup to be the engine faimly
according to one source, not another, lol. Anyway, cant find what CH is, if engine
family. I realize the trans could have been swapped at one time, but doesn't look like it.
TECH Junkie
Joined: Dec 2012
Posts: 3,615
Likes: 1,327
From: Iowa
Why do you care? it's not like one is inherently stronger if it came behind a tbi 350 vs a 6.5 diesel vs a 5.3 lm7
Bellhousing, input shaft type, and tailhousing...that's all that really matters physically.
You can update anything internally to make it work best for your setup
Bellhousing, input shaft type, and tailhousing...that's all that really matters physically.
You can update anything internally to make it work best for your setup
TECH Junkie
Joined: Jun 2008
Posts: 3,202
Likes: 1,390
From: Nitro Alley
As Maroon Monster said... what is the difference in reality...
The transmissions did not vary just because a different size/ output engine was in front of it.
It is a 4L60E transmission for all that matters.
On top of that; It also doesn't matter if the transmission is a 60 or 65 variant... They are essentially all the same and need to be modified regardless.
If you really need to know, OCHD with a 2 piece case is: For 2000 Chevy two wheel drive Tahoes, Suburbans, and Silverados with a 5.3L engine.
The transmissions did not vary just because a different size/ output engine was in front of it.
It is a 4L60E transmission for all that matters.
On top of that; It also doesn't matter if the transmission is a 60 or 65 variant... They are essentially all the same and need to be modified regardless.
If you really need to know, OCHD with a 2 piece case is: For 2000 Chevy two wheel drive Tahoes, Suburbans, and Silverados with a 5.3L engine.
Thread Starter
Joined: Sep 2007
Posts: 4,188
Likes: 292
From: woodbine, md
Thanks-I was trying to ID the engine, 4.8 or 5.3 before I bought it-the trans looked like
it had never been sep. from the engine, but I didnt think the engine was a 2000, maybe the trans
was swapped early on. It ended up being a 5.3, I only wanted the engine, but the trans was
left on it. Never been inside a 60E, rebuilt some 80E's, I guess a project later on.
it had never been sep. from the engine, but I didnt think the engine was a 2000, maybe the trans
was swapped early on. It ended up being a 5.3, I only wanted the engine, but the trans was
left on it. Never been inside a 60E, rebuilt some 80E's, I guess a project later on.
TECH Junkie
Joined: Jun 2008
Posts: 3,202
Likes: 1,390
From: Nitro Alley
If you guys are ever trying to identify an engine...
The best ways to do so, are from:
-The Vin of the car of truck that the engine was originally installed (the 8th digit of the VIN relates to the engine RPO).
-The RPO sticker of the car or truck that the engine was originally installed (one of the L designated codes will be for the engine).
-The partial VIN that is etched into the cylinder-block of the engine.
-The partial VIN that is etched into the transmission case
Most importantly...
The Broadcast Code of the transmission is NOT a good way to identify an engine!
The Broadcast Code of the transmission does not provide any engine specifics by it self...
For example a partial VIN is needed to know if a 6.0L engine is a LQ4 or LQ9.
The transmission Broadcast Code will not provide the information required to know this.
The best ways to do so, are from:
-The Vin of the car of truck that the engine was originally installed (the 8th digit of the VIN relates to the engine RPO).
-The RPO sticker of the car or truck that the engine was originally installed (one of the L designated codes will be for the engine).
-The partial VIN that is etched into the cylinder-block of the engine.
-The partial VIN that is etched into the transmission case
Most importantly...
The Broadcast Code of the transmission is NOT a good way to identify an engine!
The Broadcast Code of the transmission does not provide any engine specifics by it self...
For example a partial VIN is needed to know if a 6.0L engine is a LQ4 or LQ9.
The transmission Broadcast Code will not provide the information required to know this.
