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08-27-2013, 11:50 AM | #1 |
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Location: Falls City, Nebraska "100 Miles From Nowhere"
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Deciphering Engine Codes
Doing some research on a 350ci motor I just purchased...It came out of a 72 C-10 2wd with a 350thm...The deck stamp is T1029CMA and the casting number at rear of the block 39700(1*)4 (not sure about the "*one")...The casting date is 1/23/73. This appears to be a factory 4bbl intake and Quadrajet...Heres some pics...Any help would be greatly appreciated Thanks in advance! ~Michael~
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Michael of the clan Hill, "Two Seventy Two's" 71 1-ton Dually 350 4-Speed 71 C/50 Grain Truck, 350 Split-Axle 4-Speed 02 3/4 ton Express 14 Indian Chief Vintage 1952 Ford 8N, "Only Ford Allowed On The Property" "Be American, Buy American" Last edited by Ironangel; 08-27-2013 at 11:57 AM. |
08-27-2013, 12:39 PM | #2 |
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Re: Deciphering Engine Codes
Look here. Lots of links to decipher what you got.
http://www.crankshaftcoalition.com/w..._Chevy_engines |
08-27-2013, 02:33 PM | #3 |
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Re: Deciphering Engine Codes
Thanks Geezer! Got a handle on the casting number...The code stamp on the front right deck is whats throwin me...T1029CMA I know "T" is the Plant suffix and the date follows as Oct 29...Cant find the "CMA" suffix meaning...Anybody care to take a stab? Thanks...~Michael~
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Michael of the clan Hill, "Two Seventy Two's" 71 1-ton Dually 350 4-Speed 71 C/50 Grain Truck, 350 Split-Axle 4-Speed 02 3/4 ton Express 14 Indian Chief Vintage 1952 Ford 8N, "Only Ford Allowed On The Property" "Be American, Buy American" Last edited by Ironangel; 08-27-2013 at 04:02 PM. |
08-27-2013, 05:06 PM | #4 |
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Re: Deciphering Engine Codes
T Tonawonda assembly plant
10 October 29 29th day of October CMA 74 L65 350 2bbl comes back as car engine, if you have a VIN code stamped somewhere in the block that can be decoded as well. 3970014 68-79 350cid block
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Thanks, Tim * VIN/Model Decoders * Power Team Charts (engine/transmission/gear ratio) * Post Your Pickup SPID ** Blazer SPID ** Suburban/Panel SPID * RTFM ... Read The Factory Manuals... download 'em here Highlanders ** Do you have a 1972 Plaid Pickup? ** Plaid Blazer ** Plaid Suburban Last edited by SS Tim; 08-28-2013 at 02:37 AM. |
08-27-2013, 06:43 PM | #5 |
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Re: Deciphering Engine Codes
Awesome! Thank you Tim! Where on the block would I look for the VIN? And again Thank you Tim! Your "The Man!"
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Michael of the clan Hill, "Two Seventy Two's" 71 1-ton Dually 350 4-Speed 71 C/50 Grain Truck, 350 Split-Axle 4-Speed 02 3/4 ton Express 14 Indian Chief Vintage 1952 Ford 8N, "Only Ford Allowed On The Property" "Be American, Buy American" |
08-27-2013, 07:38 PM | #6 |
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Re: Deciphering Engine Codes
It can be several places. The engine assembly code pad, but I suspect you would have seen that. Try the block above the oil filter and the bellhousing flange for alternate locations.
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Thanks, Tim * VIN/Model Decoders * Power Team Charts (engine/transmission/gear ratio) * Post Your Pickup SPID ** Blazer SPID ** Suburban/Panel SPID * RTFM ... Read The Factory Manuals... download 'em here Highlanders ** Do you have a 1972 Plaid Pickup? ** Plaid Blazer ** Plaid Suburban |
08-27-2013, 08:03 PM | #7 |
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Re: Deciphering Engine Codes
Thanks Tim 1970-73 3970014 350 200 300 2/4 LA built Camaro I got those numbers and info with the casting number from this site http://www.nastyz28.com/sbchevy/sblock.php What I couldnt find was suffix "CMA" and you helped clarify that Now then, whats an "LA built Camaro?" Los Angeles or Louisiana? This motor appears to be a factory 4bbl, havent pulled the pan yet to verify the 2 or 4 bolt main...Whatever it is, it's going to be a winter build project...I pulled the oil filter today and antifreeze came spilling out with the oil...I'll update later...Thanks again Tim!
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Michael of the clan Hill, "Two Seventy Two's" 71 1-ton Dually 350 4-Speed 71 C/50 Grain Truck, 350 Split-Axle 4-Speed 02 3/4 ton Express 14 Indian Chief Vintage 1952 Ford 8N, "Only Ford Allowed On The Property" "Be American, Buy American" |
08-27-2013, 08:58 PM | #8 | |
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Re: Deciphering Engine Codes
Quote:
Base on your provided casting date and assembly code, I gave you the most likely applications. 74 L-65 350 V8 8.5cr 2bbl 145hp In that list you will see there is in fact a 74 camaro application. While nastyZ28 has a lot of information there is a lot of missing information too. What they are trying to say in your quote is a Van Nuys, California assembled Camaro. But then they also only list 3970014 as a 70-73 block which it is not. Actual listed uses are from 68-79. Based upon your assembly code it is most likely a 2 bolt main. While it might have a factory 4bbl intake and carb that does not mean they are original to that block and being 40 years later in a vehicle other than it was originally built for pretty much makes everything a gamble. Might try looking up the intake codes and dates too along with the carb application.
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Thanks, Tim * VIN/Model Decoders * Power Team Charts (engine/transmission/gear ratio) * Post Your Pickup SPID ** Blazer SPID ** Suburban/Panel SPID * RTFM ... Read The Factory Manuals... download 'em here Highlanders ** Do you have a 1972 Plaid Pickup? ** Plaid Blazer ** Plaid Suburban |
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08-28-2013, 04:05 PM | #9 | ||
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Re: Deciphering Engine Codes
Water in oil usually means either a blown head gasket, or a cracked block or head... Keep fingers crossed it's a gasket or one of the heads.
Could be a water jacket gasket from the intake manifold as well. But you should get the block and heads t a machine shop to magnaflux for cracks. Gary
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'cuz chicks dig scars... My 1972 GMC 1500 Super Custom (Creeping Death) "long term" build thread. The Rebuild of Creeping Death after the wreck Quote:
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