1972 CA l48 engine
Team Owner
Joined: Sep 2006
Posts: 31,270
Likes: 4,362
From: Westminster Maryland
Hi,
The NB2 code appears to indicate an engine headed to California with a different carb, emission controls, an AIR pump, and a different cam.
Are these the CDH and CDJ engines?
PJ… haven't answered your question…. increased emission control for stricter requirements in California than in the rest of the states?
Regards,
Alan
The NB2 code appears to indicate an engine headed to California with a different carb, emission controls, an AIR pump, and a different cam.
Are these the CDH and CDJ engines?
PJ… haven't answered your question…. increased emission control for stricter requirements in California than in the rest of the states?
Regards,
Alan
Last edited by Alan 71; Jan 25, 2015 at 12:31 PM.
Team Owner
Joined: Sep 2006
Posts: 31,270
Likes: 4,362
From: Westminster Maryland
Hi,
The cam specs (lobe lift) are listed in the Specification Section of the Chassis Service Manual (Engine Section 6).
I only have the 71 manual so I can't check it for 72.
For 71 they're .2600" for intake and .2733" for exhaust. This compares to the 71 LT-! cam of .3057" and .3234", for example.
The overlap isn't noted.
Regards,
Alan
The cam specs (lobe lift) are listed in the Specification Section of the Chassis Service Manual (Engine Section 6).
I only have the 71 manual so I can't check it for 72.
For 71 they're .2600" for intake and .2733" for exhaust. This compares to the 71 LT-! cam of .3057" and .3234", for example.
The overlap isn't noted.
Regards,
Alan
Thread Starter
Pro
Joined: Oct 2008
Posts: 645
Likes: 1
From: Hayward Wi
The engine I have is a CDD code L48 I know its not a vette engine but im sure its the same thing.
Now I seen it in a verry detailed spec thing from 1972 on the chevelle and its simular cars as well as another sight too. The book gives specs that are what im sure are exadurated.
The reason I ask is because I was thinking it was the 929 cam but now im not to sure of this and wanted to know. What cam grind it was
Btw the engine was a junk yard find of a odd nature.. runs good and has good oil pressure.
Now I seen it in a verry detailed spec thing from 1972 on the chevelle and its simular cars as well as another sight too. The book gives specs that are what im sure are exadurated.
The reason I ask is because I was thinking it was the 929 cam but now im not to sure of this and wanted to know. What cam grind it was
Btw the engine was a junk yard find of a odd nature.. runs good and has good oil pressure.
Last edited by PuddleJumper; Jan 25, 2015 at 02:04 PM.
Drifting
Joined: Oct 2005
Posts: 1,615
Likes: 150
From: Forth Worth TX
Last edited by Revi; Jan 25, 2015 at 02:27 PM.
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Drifting
Joined: Oct 2005
Posts: 1,615
Likes: 150
From: Forth Worth TX
Hey there,
Scroll down to "Corvette", large pdf files of info. for each year. You can download and save them on your computer or print them out.
https://www.gmheritagecenter.com/gm-...tion-kits.html
Scroll down to "Corvette", large pdf files of info. for each year. You can download and save them on your computer or print them out.
https://www.gmheritagecenter.com/gm-...tion-kits.html
Last edited by Revi; Jan 25, 2015 at 02:31 PM.
Thread Starter
Pro
Joined: Oct 2008
Posts: 645
Likes: 1
From: Hayward Wi
Do you guys got any idea what camshaft that is as I see its not a 929 cam.. or would it be just like the 929 cam.. trying to get a idea of its base power in desktop dyno so I can see what I can do with what I got.. as I know that works off gross hp bot net lol..
And dose anyone know what purpose this difrent cam served? Extra power to deal with the extra crap or?
And dose anyone know what purpose this difrent cam served? Extra power to deal with the extra crap or?
Drifting
Joined: Mar 2014
Posts: 1,744
Likes: 278
From: Akron OH
Hi,
The NB2 code appears to indicate an engine headed to California with a different carb, emission controls, an AIR pump, and a different cam.
Are these the CDH and CDJ engines?
PJ… haven't answered your question…. increased emission control for stricter requirements in California than in the rest of the states?
Regards,
Alan
The NB2 code appears to indicate an engine headed to California with a different carb, emission controls, an AIR pump, and a different cam.
Are these the CDH and CDJ engines?
PJ… haven't answered your question…. increased emission control for stricter requirements in California than in the rest of the states?
Regards,
Alan
Thread Starter
Pro
Joined: Oct 2008
Posts: 645
Likes: 1
From: Hayward Wi
would be my thoughts too but the chevelle L48 CA and non CA version are both 175HP for 1972..