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Engine Codes

Forum: C3 Engines, Driveline and Handling

13 Messages
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Engine Codes

Posted: 8/29/06 8:09amMessage 1 of 13
j
jbova2
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Joined: 8/28/2006
Posts: 33

Asking for any and all help on the stamped in numbers on my block.

These are the numbers on the front right portion of the block

V0212CMJ

I understand that V is for Flint and the 0212 stands for Feb. 12

Does anyone know what the CMJ stands for?

Thank you,

JB

 

 

 

jbova238958.3568171296
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Engine Codes

Posted: 8/29/06 8:33amMessage 2 of 13
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71Shark
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Edmond, OK - USA
Joined: 7/13/2006
Posts: 400
Vette(s): 1971 Brands Hatch Green L48 Coupe Automatic Driver - restored 1995

Acccording to one site I found, CMJ was listed twice. In 1974 it said t400 police.  It was listed again for 1980 as a 305 auto trans car.

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Engine Codes

Posted: 8/29/06 8:59amMessage 3 of 13
r
ranger3
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North Charleston, SC - USA
Joined: 3/20/2004
Posts: 4208
Vette(s): 1975 L48 AT AC T-top
Look on the rear of the block, driver's side, and find the six digit number.They will be raised numbers much bigger than those on the front pad. If you post that number you can get more info from the members.
Scott
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Engine Codes

Posted: 8/29/06 11:55amMessage 4 of 13
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cthulhu
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Hot Springs, AR - USA
Joined: 4/24/2004
Posts: 3236
Vette(s): 69 Conv #'s match 427, TKO-600/.64, 3.36HD-Posi, HT, T/T, PS, PB, PW, SP, Leather, Comp XE264HR & Roller Rockers & Lifters, Air-Gap RPM intake, Holley St Av 770 VS, MSD 6AL+Dist+Blaster SS, K&N, Jet-Hot Hooker Side-Pipes, Steeroids, Al Rad, Spal Fans

I came up with the same info..

 

with the date and casting we can narrow it down

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Engine Codes

Posted: 8/29/06 7:42pmMessage 5 of 13
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Adams' Apple
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Duncanville, TX - USA
Joined: 11/8/2003
Posts: 22720
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
JB...
CHECK HERE to locate the various casting number/VIN locations.

Joel Adams
C3VR Lifetime Member #56    
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(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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Engine Codes

Posted: 8/29/06 9:18pmMessage 6 of 13
O
Okie Dude
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Eastern Oklahoma County, OK - USA
Joined: 1/3/2006
Posts: 1560
Vette(s): 1980 Black L48 T-Tops
If you look on the drivers side and the number is 5.0L, I can tell you how you will feel...
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Engine Codes

Posted: 8/30/06 3:27amMessage 7 of 13
j
jbova2
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Posts: 33

Hey, Thanks for all of the valued input. I'm new here and am very impressed with the responses and welcomes.

Here we go...

Casting number is 3970010

350- 1969 - 1980 2 or 4 blt (Have not had the pan off "yet")

327 - 1969 2 blt. (NOT)

302 - 1969 2 blt Truck or Industrial (NOT)

Based on the front right stamping it certainly appears this is a basic 350 block from 69-80, I would like to know if it is the original block.(I stand corrected It is Not the original as the VIN number is not even close) From the enormous pile of reciepts I recieved with the car I see that the previous owner had this block punched .020 over bored and  .010/.010 cut off the crank. It has Edelbrock Aluminum heads, intake, and carb. HEI Ignition and stock exhaust manifolds.

She runs like a top albiet a tad rich. Like I mentioned this one is a great driver 1972 with a 1980 front clip (Go Figure?) Frame off and "Literally Everything" on the chassis, braking system, cooling system and suspension is new. Fresh engine, new T400 trans, and new rear end.

Just put twin electric fans on it, and fabbed up a air dam to direct the air through the rad. Almost running too cool now. The fans are programable, so I still need to tweek the on/off settings to work with the 180 deg thermostat.

Again, Thank you all for the help and directions to a really helpful site.

JB

jbova238959.1559259259
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Posted: 8/30/06 4:51amMessage 8 of 13
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cj5nutz
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Ronda, NC - USA
Joined: 6/7/2006
Posts: 1057
Vette(s): 77 & 71 & 85

That should make you one sweet ride.   

Welcome to the best C3 site on the net.

I like blue! 



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Posted: 8/30/06 5:48amMessage 9 of 13
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Redwingvette
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Waterford, MI - USA
Joined: 9/13/2002
Posts: 1795
Vette(s): 1973 Red coupe

Thanks guy's, you have once again proved me right. Joe is a friend of mine and I told him he needed to join this site. See you later Joe.

 

Brian - NCM Lifetime Member

73 coupe L48, Flat-top pistons, Performer RPM Heads, Crane Cam and roller rockers, Holley 650 vac sec. Performer intake,
3.55 gear BTO 200-4R trans,
Leather seats, Seatbelt Plus 3point seatbelts, Pioneer CD player
Magnaflow Exhuast System

Dewitt radiator and dual electric fans
Borgeson Steering box
 


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Posted: 8/30/06 7:47amMessage 10 of 13
O
Okie Dude
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Eastern Oklahoma County, OK - USA
Joined: 1/3/2006
Posts: 1560
Vette(s): 1980 Black L48 T-Tops
Guys;

I read in a 350 rebuild book that you could tell a 4-bolt by 3 freeze plugs in each side rather than 2 for the 2-bolt. 

Is this true or urban legend?
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