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2/27/14 9:12pm - Original Message: 'What heads came on a 79 L-82?'
bcousins
Former Member
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Jacksonville, FL - USA

Vette(s):
79 L-82 4-speed. Engine stock except long tube headers. Previous owner replaced upholstery and carpet with OEM. I replaced and upgraded steering and suspension.

Joined: 12/15/2009
Posts: 36
I have searched all over the web and have seen mention of the heads I have on my 79 L-82 but have not been able to identify them. 
First, what was the correct head casting # for that engine? 
The block casting # is 3970010 indicating a 350 and the ID code is V0219ZBA indicating and engine made in Flint, MI on 02 February and ZBA is the L-82 code for 1979.
The heads on the engine have this casting: GM 42 then under that 3888883 then under that D2 42. 
None of the websites I have searched list the 3888883 heads although some people have posted guesses such as from a 400 small block. 
Most posts go on to recommend one head or another for improvement but I am only trying to figure out what I have, I already know what I want to have and they are made by AFR.


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2/27/14 11:58pm - Reply: 'Re: What heads came on a 79 L-82?'
Adams' Apple Lifetime Member
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Duncanville, TX - USA

Vette(s):
#1-1974 L-48 4spd Cp Med Red Metallic/Black deluxe int w/AC/tilt/tele./p/w-p/b/ Am-Fm/map light National/Regional/Chapter NCRS "Top Flight" #2-1985 Bright Red/Carmine Cp.L-98/auto Member: NCRS, NCRS Texas, Corvette Legends of Texas

Joined: 11/8/2003
Posts: 19447
L-48 and L-82 heads in '79 were 462624 castings. ZAB is correct for L-82/4speed.
I can't find that casting number(3888883) in ANY of my reference material. My guess would be  early/mid '70s 350. I'll keep looking, tho. Definitely not original for a '79 Corvette, best I can tell.

Are you certain that is the correct number? Can you post the casting Date(s) for the head(s)?

|UPDATED|2/27/2014 8:58:18 PM (AZT)|/UPDATED|


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Joel Adams
C3VR Lifetime Member #56    
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"Money can't buy happiness -- but somehow it's more comforting to cry in a CORVETTE than in a Kia"
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2/28/14 12:21am - Reply: 'Re: What heads came on a 79 L-82?'
bcousins
Former Member
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Jacksonville, FL - USA

Vette(s):
79 L-82 4-speed. Engine stock except long tube headers. Previous owner replaced upholstery and carpet with OEM. I replaced and upgraded steering and suspension.

Joined: 12/15/2009
Posts: 36
Thanks for the response. I also can't find that casting number anywhere but that is what shows on my heads. Leads me to suspect they are from some obscure 400 engine and found in a junkyard. BTW, the engine code suffix # is ZBA, not ZAB. I believe the ZAB was a 79 L-48. This page shows both http://www.nastyz28.com/gm-chevy-codes/chevy-engine-codes-suffix-10.php 

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2/28/14 12:26am - Reply: 'Re: What heads came on a 79 L-82?'
bcousins
Former Member
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Jacksonville, FL - USA

Vette(s):
79 L-82 4-speed. Engine stock except long tube headers. Previous owner replaced upholstery and carpet with OEM. I replaced and upgraded steering and suspension.

Joined: 12/15/2009
Posts: 36
3888883 is the number cast into the heads. I should have taken a photo when I had the valve cover removed. I don't know where to find the date. I posted all of the info above that is shown on the heads;
GM D2 then under that 3888883 then under that D2 42.


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2/28/14 5:00pm - Reply: 'Re: What heads came on a 79 L-82?'
bcousins
Former Member
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Jacksonville, FL - USA

Vette(s):
79 L-82 4-speed. Engine stock except long tube headers. Previous owner replaced upholstery and carpet with OEM. I replaced and upgraded steering and suspension.

Joined: 12/15/2009
Posts: 36
My apologies to Joel at Adam's Apple. I pulled the valve cover today and see that I misread the casting number. The correct number is 3998993. I also verified it is a heavy casting and matched the casting mark on the ends of the heads with that head. There are some conflicting casting number websites but it looks like it is from a 1971-74 350. Not a great head but probably better than what came on the car. 

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3/1/14 12:21am - Reply: 'Re: What heads came on a 79 L-82?'
Adams' Apple Lifetime Member
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Duncanville, TX - USA

Vette(s):
#1-1974 L-48 4spd Cp Med Red Metallic/Black deluxe int w/AC/tilt/tele./p/w-p/b/ Am-Fm/map light National/Regional/Chapter NCRS "Top Flight" #2-1985 Bright Red/Carmine Cp.L-98/auto Member: NCRS, NCRS Texas, Corvette Legends of Texas

Joined: 11/8/2003
Posts: 19447
 That makes it better! Thumbs Up
Years used- 1968-76      
Cast # 399893              
Engine - 350       
Intake valve-  1.72"             
Exhaust valve-   1.5"              
Application- Truck


Mystery solved. Big smile


|UPDATED|2/28/2014 9:21:48 PM (AZT)|/UPDATED|


____________________________________
Joel Adams
C3VR Lifetime Member #56    
My Link


(click for Texas-sized view!)
             NCRS

"Money can't buy happiness -- but somehow it's more comforting to cry in a CORVETTE than in a Kia"
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