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#1 |
Senior Member
![]() Join Date: Feb 2011
Location: Clovis Ca.
Posts: 632
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What is this motor
I need help identifying this motor, I was told it is a 350 the stamp on the front of the block is VL147695 and on the back of the block it looks like this.
5.7 L G GM SGI I have looked on every chart I can find with no luck, THANKS. |
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#2 |
Registered User
Join Date: Dec 2009
Location: DFW, TX
Posts: 764
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Re: What is this motor
Sounds like a late 80's early 90's 350 to me. Pre LT1 post carb.
EDIT: Looks like someone knows those numbers. http://wiki.answers.com/Q/Is_this_a_...G_SGI_14093638
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72 Cheyenne Super 1/2 LWB White/Dark Yellow 07 Avalanche 2LT 74 Sleek Craft Rebel Jet Boat W/Pontiac 400 Last edited by OhOneWS6; 04-30-2011 at 09:33 PM. |
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#3 |
Senior Member
![]() Join Date: Feb 2011
Location: Clovis Ca.
Posts: 632
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Re: What is this motor
more info please
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#4 |
Registered User
Join Date: Dec 2009
Location: DFW, TX
Posts: 764
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Re: What is this motor
What info are you looking for? It's a late 80's early 90's 350 Small Block Chevrolet.
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#5 |
Senior Member
![]() Join Date: Feb 2011
Location: Clovis Ca.
Posts: 632
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Re: What is this motor
I was hoping to find out what it came out of, and what kind of HP. it is suppose to put out. OR was it a crate motor ?
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#6 |
Registered User
Join Date: Dec 2009
Location: DFW, TX
Posts: 764
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Re: What is this motor
I got nothing. The only thing I find is that is was (Like most late 80's stuff) not real desirable for a performance build.
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#7 | ||
"I ain't nobody, dork."
Join Date: Sep 2007
Location: Whidbey Island, Washington
Posts: 8,940
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Re: What is this motor
The stamp on the pad on the block that is located in front of the passenger side cylinder head should end with 3 letters. That is the Engine Suffix Code. It'll tell you exactly what it is.
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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#8 |
Registered User
Join Date: Jan 2011
Location: Prescott AZ
Posts: 112
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Re: What is this motor
http://classic-web.archive.org/web/2...ww.mortec.com/
What is the casting # on the back of the block? Last edited by BIGKEV; 05-06-2011 at 07:30 PM. |
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#9 |
Scrapper 1
Join Date: Jan 2007
Location: Riverside Calif
Posts: 1,649
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Re: What is this motor
I feel any of the blocks that are stamped 5.7 are the weaker blocks if you find a 3970010 block that is at 40-60 over best off is to resleave it at one time most people told me there are over 20 million 350 blocks out there from 1968--86 Now the MR Goodwerch has a good
deal out and there costing on the block is the 3970010 350 block 4 bolt main 290 hp for 1600.00long block brand new Not sure on the casting but i hear now days guys are Resleeving the old 350 blocks |
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#10 | |
Registered User
Join Date: Jan 2011
Location: Prescott AZ
Posts: 112
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Re: What is this motor
Quote:
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#11 |
Registered User
Join Date: Mar 2008
Location: Powhatan, Va.
Posts: 376
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Re: What is this motor
I see no reason to be afraid of a 1 pc rear main seal block for a street or street and strip application. They have a lot of thing going for them : better gasket sealing surfaces, many have factory roller cam, 1 pc rear main seal, and just better machine work from GM. If you start making more than 500hp you really need to start thinking about an aftermarket block, just to protect your investment in parts. I can't imagine sleeving 8 holes in a block unless it was numbers matching for something very valuable. At the shop where I work we charge 175.00 per hole to sleeve a cylnder. It is a lot of work to do it right, I have seen many blocks that were sleeved where the sleeve moved causing the engine to have head gasket problems or consume oil and ultimately have to have the block replaced. I have seen some blocks go .080, I wouldn't want it. I have also have had a 3970010 block bored .060 in my Nova window a cylnder at 6500 rpm. I found chunks of cylnder that were under .050 thick. My advise is to have a block sonic checked before going .060. Just my .02c
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