Apr 14, 2023 · Here's a breakdown of some of the most common GM truck motor casting numbers and their corresponding year, make, and model information: 3970010 - This is a small block V8 engine that was produced from 1969 to 1980. It was used in a variety of GM trucks, including the Chevrolet Camaro, Corvette, and Nova.Is the Chevy 350 block with casting numbers of 3970010 have more nickel? Blocks that have more nickel have 010 or 020 under the timing cover, meaning 10% and 20% nickel.Chevy Chevrolet small block V8 engine casting numbers ... Chevrolet Small V-8 Cylinder Block Casting Numbers ... 3970010: 350: 69: Corvette:3970010 SBC Casting Number Question. Discussion in 'The Hokey Ass Message Board' started by geemann51, Mar 3, 2009. Joined: Dec 16, 2001 Posts: 2,120. Profile Page ... thats the same number on the block im using, its a 4-bolt main, mine is a 350, great block, im running the bigger camel humps on it, its in its second hot rod, i had to punch it ...The block number - in this case 3970010 - is not the same as the block alloy casting codes (010, 020) that show alloy content and are cast inside the timing cover area on the front of the block. That's correct,and you may need to pull the cam gear to see it.It's the nickel and tin content in the block.2. Car. 71 chevelle. May 22, 2020. #1. Hello everyone, I have had a smallblock chevy engine in storage for ten years. The casting number is 3970010, now according to the chart this engine can be a 302/327/ or a 350 . my question is is there any way to figure out what it is without knowing the stroke, thanks. N.The number itself can have 6, 7 or 8 numeral digits. They might look like this “361959” or “3970010” or “14015445”. The block casting numbers do not have any letters in them. There are sometimes other individual letters found on blocks like “GM” or “CFD” for the Central Foundry Division, but they are not part of the block ...#1 · Aug 29, 2004 (Edited by Moderator) I just pulled this SBC from a 34 Vicky and this is the number on the back of the block 3970010. What I can determine is a 2 or 4-bolt main. How else can I tell without pulling the …Block casting code should be 3970010- This block was used in the 350 200 hp and 255 hp. Stamp pad: the 12s500560 is the part of the vin number of the vette. it would have been the 560th vette made that year. The 1 is probably a K meaning 350 200 hp. CKX means 350ci , 200hp with auto.As some of you may have seen, I posted recently about a 327 buildup. The person selling the engine gave me the casting number, which is 3970010. According to Mortec.com, this engine could be a 302, a 327 or a 350! I'm really interested in it being a 327 (but I would take a 302 also, hehe)...Re: Help identifying engine. 3970010. « Reply #4 on: March 18, 2013, 11:27:25 AM ». The 3970010 block is probably the most common "350" block there is. As stated it can be any 4.00" bore motor of the 3 possible. More than likely its a 350 that someone has changed the timing cover on, or maybe a car engine. If it has a 6" …Manufacturer Part Number. 3970010. Vintage Part. Yes. Block Type. V. Number of Cylinders. 8. Number of Valves. 16. Engine Size. 350. Fuel Type. Gasoline. Brand. Chevrolet. Items Included. ... The engine block was not as was advertised. The block was not bored and had to be redone at a local machine shop. The engine has not been reassembled or ...The block casting number on smallblock and big block Chevy V-8 motors is located on a ledge found at the rear of the block, most often on the driver's side. ... 3970010: 302: 69: Camaro Z/28 - 4 bolt main bearings: 3970010: 327: 69: 2 bolt main bearings - trucks: 3970010: 350: 69 - 80: 2 or 4 bolt main bearings: 3970014: 350: 70 - 76:| 1968, 1969, 1970, 1971, 1972, 1975, 1976, C3, casting, Corvette, engine, exhaust, left, manifold, number, numbers, rightRe: Engine Casting Block #3970010. 02-12-06 09:07 PM - Post# 873994. In response to joeysworld. The difference is the suffix code on the block. Could be a 145 HP 350 from a 1975 caprice. Could be a DZ 302. The difference is the code on the front of the passenger side. Just above where the water pump bolts.B. BogiesAnnex1. 17591 posts · Joined 2007. #7 · Jan 25, 2013. Your title lists the casting number as 3970010, if this is indeed an 010 casting it is the highly desireable heavy duty 4 inch bore block that was used for some 302's and 327's and a ton of 350's. It was used as a basis for high performance passenger car engines as well as heavy ...The number itself can have 6, 7 or 8 numeral digits. They might look like this "361959" or "3970010" or "14015445". The block casting numbers do not have any letters in them. There are sometimes individual letters found on blocks like "GM" or "CFD" for the Central Foundry Division, but they are not part of the block casting number.Flat top or dish pistons only, no gas ported pistons. Cylinder heads must be unaltered approved OEM and minimum 76 cc combustion chamber. GM approved head numbers are - 14079267, 3986336, 3986339, 3986339X, 3986388, 3932441, 376445, 3928454, 3932454, 3876487, 3973487, 3973487X, 3973493, 3951598, 468642, 330862, 333882, 3998920, 3998991, 3998993 ...How to decode and identify a small block chevy engine : Small Block Chevy Engine Identification Menu: Engine Summary | Engine RPO | Engine Blocks | Cylinder Heads | ... Small Block Chevy Flexplate Part Numbers. Part # DIA. Teeth: Comments: 471529: 12.75" 153: Two-piece seal blocks, int balance: 471578: 14" 168: …C1 & C2 Corvettes - Small block casting number 3780000 ? or 387000 - Anybody out there knowledgable about Block casting numbers ? ... Probably 3970010 - the most common 350 cu in casting number of all time. Reply Like. Get notified of new replies ... 387000, block, casting, chevy, corvette, numbers, small. Back to Subforum. C1 & C2 Corvettes ...This engine will be built using an genuine GM LT1 4-bolt engine block STANDARD BORE that was originally assembled by GM as a partial over the counter 370hp GM #3966921 assembly. ... 3970010 BLOCK. Other Part Number. CTB, CTC, MO, MN, DZ, LT1 350 370HP. Interchange Part Number. 3970010 CTC, LT1 350 360HP, LT1 350 370HP, 1969 Z/28, 3927186 HEADS ...3970010 SBC Casting Number Question. Discussion in 'The Hokey Ass Message Board' started by geemann51, Mar 3, 2009. Joined: Dec 16, 2001 Posts: 2,120. Profile Page ... thats the same number on the block im using, its a 4-bolt main, mine is a 350, great block, im running the bigger camel humps on it, its in its second hot rod, i had to punch it ...i'm probably gonna keep mine till it cracks. thinking about a turbo setup right now, just a mild boost setup. 350-400 hp makes me happy. it's also known as the target master crate motor. Save Share. Like. Puke Green 71. 1015 posts · Joined 2006. #3 · Jan 28, 2009. you mean like this one, Its a Mexico 4bolt;Casting number 3970010 is a very desireable block it is a 4 inch bore used for late 327s, Z28 302s, and heavy duty 350s used as performance, truck, and industrial engines. They all vary as to being 2 or 4 bolt mains. The 2 bolt blocks can be converted to 4 bolts with all the strength of factory 4 bolt versions.The block and just about all parts have a "casting number" on them. Your block #3970010 was used by GM from 1969 through 1980 in anything from a 1/2 ton pickup, to the HOT Z-28's.Gm casting number 3970010 but what is the A81 on the passenger side? A81 should be January 8, '71,'81,'91. ... casting number 3970010 is a 350 block from 1969 - 1979 but in 1969 302 and 327 have ...Might be hard to find. My understanding is the 3956618 block was used for many high performance 302 and 350 applications beginning around January of 1969 while GM retooled the Flint plant for the 3970010 block. I don't understand the complete history and exact usage, but I believe the 3956618 block was used thru the end of the 1969 model year with a few of the 010 blocksSep 14, 2012 · Chevy Small Block - Engine Block Casting Numbers Notes (for below): "High Power" is the maximum rate HP this block was used for, "Low Power" is the lowest rated horsepower RPO engine the block was used in. "Main Caps" is the number of bolts holding the cap. A "two-bolt" main, or a four-bolt main.But let us say it is an original engine according to the numbers and date on the block. I have no idea about the pad ... All i know about the engine is the engine number, date and what the pad says Engine number: 3970010 Engine date: D234 Engine pad: MJ18800 Attached Images Last edited by TheSaint; 03-14-2017 at 04:44 PM. Reply Like. 03-14-2017 ...I have a 4 bolt main,apparently 350 with the # XXXXX:vc011tbc,and,3970010.Heads have #3878487. Iwas told this is a 1969-1979, out of a car truck or vette.Any help would be greatly appreciated.I'm building a 383 stroker ,and need to know if it's a good block,and heads to use. Thanxxxx.Chevy Chevrolet small block V8 engine casting numbers ... Chevrolet Small V-8 Cylinder Block Casting Numbers ... 3970010: 350: 69: Corvette:Loaded in 1 ms.. There are 2,506 casting numbers in the database.2,506 casting numbers in the database.Jul 19, 2012 · 22 posts · Joined 2012. #3 · Jul 19, 2012. No it isn't. There is no date code or clock on rear of the engine. One forum quoted that GM moved date codes to the side of the block in the 70's. This is passenger side between the core plugs. Block code (in the usual place) confirmed as 3970010 "M" code next to this.The 3970010 block casting number was used from 1969-1979.... But the "AAB" code narrows it down to the 1976 model C-60 (big truck chassis) like a grain truck, heating oil delivery truck, Fire tanker truck, etc. So block is a 1976. Listed as 8.5-1, but will actually measure out a bit lower than that, more like 8.1-8.2:1.Second Generation Camaro Z28 Engines - LT1 Specifications. 1970 engine is used as the baseline. 1971 & 72 will be identical except where noted. 1971 had compression dropped from 11.0:1 to 9.0:1 by using different pistons and bigger CC cylinder head. 1972 is identical to 1971, except horsepower dropped 10 and rating was changed from GROSS HP to ...Hi guys, hoping someone can set me straight about the block I have. I have a bare block that has casting number 3970010, it is a 4 bolt main block with the main caps stamped 2842, it also has 010 buy the oil filter housing which means 10 percent more iron or nickel which should mean a better block. However these blocks were 302 in 69 and …The "C5F" number string is "C"=Chevrolet, "5" = year ending in 5....so with an 3970010 block being '68-80 years of use, it is an 1975 Engine. "F" = Flint Engine plant. The 333882 head castings are among the top three WORST ever produced for the SBC. Very thin, crack prone castings.3109 posts · Joined 2010. #2 · Jan 18, 2011 (Edited) .060 is the max safe overbore. Don't go all the way to 60 over for the first build though. Go 30 over this time and then 10 over for each rebuilt after. If you go 60 over now then when it comes time to rebuild you will be screwed and have to buy a new block. Like.Find many great new & used options and get the best deals for SBC 350 Bare Engine Block Casting # 3970010 4 Bolt Main Machined and Painted at the best online prices at eBay! Free shipping for many products! ... GM. UPC. Does not apply. Item description from the seller. Seller assumes all responsibility for this listing. eBay item number ...The way I understand it, if the 010 and/or 020 are under the timing cover, it's a high-nickel, high-tin block, but if the 010 is somewhere else, it denotes the casting number. The entire casting number (3970010) will be behind the left-side head surface, so you can always look there to be sure.If anyone is interested in what the 509 represents, it's the last three digits of block casting number 3951509 which was a 400 cu.in. block manufactured concurrently in the same foundrys as the 3970010 ad 3970020 blocks. Lets summarize casting numbers: 3970010 3790020 3951509 numbers under the timing chain cover 010 020 509 Hmmmmm. OK, I've ...This is the cylinder block in the 57 wagon in my profile photo. I took the pictures during final assembly of the engine. It is important to note that this block is NOT a 4 bolt block. It is a 2 bolt original 327 block, although I understand that 3970010 was also used for 302's and 350's which also have a 4" bore. Driver.The '41' on your block is called "pattern serial number 41". The foundry poured 2 castings per cask (in this case, it would have been series 21, patterns 41-42). Reason is that GM engineering was constantly making refinements to every block. If successful, the blocks were approved for the line. If not, they were destroyed.#1 · Feb 22, 2012. I picked up an engine last night at a local auction house and was trying to ID it. The numbers last night when we unloaded it were: GM3970010 block. V0707TBB on the engine pad. Intake was 3985577. I was heading over to shop in the morning to check a little closer. Any help appreciated. Thanks, Shooter. Like. Sort by Oldest first.The Big Al. 16098 posts · Joined 2007. #2 · Mar 3, 2013 (Edited) TDB = 1980 350cu 190hp GM replacement engine. The casting is a3970010 I have seen the last number left off. Could be a 2 or 4 bolt main. Note: Engine could have been rebuilt and used a 350 block for the 327. Al.What size Chevy engine has casting number 3970010? a 350 or 327 that is the question. A 350 or a 327 ... What is gm block casting number 397010? That block was used from 69-80 to build 302's, 327 ...C1 & C2 Corvettes - Small block casting number 3780000 ? or 387000 - Anybody out there knowledgable about Block casting numbers ? ... Probably 3970010 - the most common 350 cu in casting number of all time. Reply Like. Get notified of new replies ... 387000, block, casting, chevy, corvette, numbers, small. Back to Subforum. C1 & C2 Corvettes ...Re: Engine Casting Block #3970010. 02-12-06 09:07 PM - Post# 873994. In response to joeysworld. The difference is the suffix code on the block. Could be a 145 HP 350 from a 1975 caprice. Could be a DZ 302. The difference is the code on the front of the passenger side. Just above where the water pump bolts.44 posts · Joined 2004. #1 · Feb 20, 2005. Hi everyone. I am going to purchase an engine with 3970010 as the casting numbers on it. The books indicate that this block could be a 302, 327, or 350. It is a four bolt main and my …Q&A: Small Block Chevy Casting Numbers 3970010 - Explained. Check Details. 1973 Chevrolet 350 SBC Engine Block Only 4 Bolt Main 3970010 Standard. Check Details. Any help identify GM 20 3970010 010 020 Block? - Hot Rod Forum. Check Details. $199 GM 3970010 Chevy Engine block TYZ corvette, camero or conv. cab.B. BogiesAnnex1. 17591 posts · Joined 2007. #7 · Jan 25, 2013. Your title lists the casting number as 3970010, if this is indeed an 010 casting it is the highly desireable heavy duty 4 inch bore block that was used for some 302's and 327's and a ton of 350's. It was used as a basis for high performance passenger car engines as well as heavy ...Small Block Chevy Casting Numbers. Small block casting date is located on driver side rear of block on flange forward of bellhousing. Big block on the right side of engine above the oil pan rails. Casting Date Example: E038 – (E = Month, 03 = Day, 8 = Last digit of model year (1978)). Month: A = Jan, B = Feb, C = Mar, D = Apr, E = May, F ...The first place we typically look is the casting number on the back of the block. There are dozens of numbers used from 1955 through the ’90s, but there are a few standouts that indicate a performance engine. Common casting numbers for performance engines include 3970010, but ours reads 3956618, another great number to put in your memory bank.For example, you have an engine with the stamping number “3970010” and a ” CMJ ” suffix code. The ” CMJ ” suffix” corresponds to a 1974-1980 t4OO police and automatic trans appl engine. ... Engine Block Casting Day Number. The Chevy engine block identification is a specific number that indicates the casting characteristics and ...Block Casting Number = 3970010; 1969-1979, 302/350 cid, car & Truck, 2 & 4-Bolt Mains, 4 Bolt Most common. This covers a huge array of engines. An interesting thing happened in Chevy plants sometime during the 1971 model year production; early in 1970, Congress past a law requiring all U.S. auto manufacturers to standardize the Partial Engine ...While the prior 427 big-block was bored to a full 454 cubic-inches, the Corvette needed added power to GM's successful small block. The LT-1 would be one of the most significant upgrades to an engine GM ever made. ... Good story Josh but your numbers for H/P & torque were too high by 100 points. Reply-A says: March 26, 2021 at 12:01 am.Q: Stock Chevy 350 horsepower casting number 3970010? That is the number of the block. It was used to build 302, 327, and 350 engines in 2 or 4 bolt main from 1969-1980. There is a machined pad on ...The block casting number is the single most important number on a block because it will probably be the last number on a block to be altered or changed to counterfeit or misrepresent a block. ... 350/245HP Block Casting #3970010 (4 Bolt) ... Former Plant manager of GM Bowling Green Assy Corvette PlantThese numbers are from the front pad. 21B650536 K04 17 CTL. This block is a 2 bolt main and has the 3970010 cast in the back of the block then up above that is K 9 cast into the block. I looked up the head casting numbers 3998920 and it said they are 72-73 350. The intake valves are big on these [email protected]. 9732 posts · Joined 2002. #2 · Mar 15, 2014. Early large journal 4" block. Produced in both two and four bolt mains. Cast in Saginaw, Michigan and machined/assembled in Flint, Mi. Companion block to 3970010.Block casting numbers 3892657 what size motor? Updated: 9/25/2023. Wiki User. ∙ 8y ago. Best Answer. what does the casting number GM 3892657 say about this engine block. Wiki User.Only show this user. #1 · Dec 10, 2014. Im trying to verify my numbers/facts before looking at a possible purchase. Are these the correct casting numbers for a 69 302. Heads: 3927186. Block: Before April of 69 3956618, After April 69 3970010. Crank: 1178. Intake: 3932472.Chevrolet Engine Block Numbers. All engines are stamped with an engine ID code, consisting of assembly plant code, production date and suffix code. ... 3970010: 350: 2-Bolt or 4-Bolt: 3970014: 350: 2-Bolt or 4-Bolt: 3970020: 307: 2-Bolt: 3970024: 307: 2-Bolt: 3999289: 454: ... Engine Block; GM; OEM Part Numbers; Part Identification; …Oct 15, 2009 · The Engine Suffix Code is stamped on a block pad located immediately forward of the right hand or passenger side cylinder head. The entire engine code contains the assembly plant, month and day along with the engine suffix code. The way I have the block sitting is the 4 bolt main caps are facing down. To the left side is the oil pump and filter ...Block Casting Number=3970010 found above the oil filter used 1969-1979 as a 350CID used in various passenger cars and trucks, also used as a 302CID in 1969 Camaro Casting Date code B22 found adjacent to the bell housing on the passenger side of the rear of the block. the B22 is a cast number above the bell housing on the passenger side.Chevy Chevrolet small block V8 engine casting numbers - WaywardGarage.com - Hot Rods - Musclecars ... Chevrolet Small V-8 Cylinder Block Casting Numbers 1955-1985 These listings are always a work-in-progress. If you have any documented info that can be added to these pages, ... 3970010: 350: 69: Corvette: 4-bolt main, late 69: 3970010: 302: 69 ...Can you determine what type of car or truck this engine was in by the block number or casting number Casting# 3970010? - Answered by a verified GM Mechanic. We use cookies to give you the best possible experience on our website. ... The numbers on my block are.....GM(NNN) NNN-NNNNand VO912TJY. I believe it is from a 1973 truck.A number of crate motors made by GM in Mexico, may have an "M" or "ML" prefix stamped into the front pad of the block followed by a series of numbers which is the serial number of that particular crate replacement motor. You may also see a raised casting on the block or heads of "Hecho en Mexico" which means "Made in Mexico".GM engine block # 3970010 was used as early as 1968 on some 327ci engines. From 1969-1979 it was a 350ci engine. ... Gm casting number 3970010 but what is the A81 on the passenger side? A81 should ...B. BogiesAnnex1. 17591 posts · Joined 2007. #7 · Jan 25, 2013. Your title lists the casting number as 3970010, if this is indeed an 010 casting it is the highly desireable heavy duty 4 inch bore block that was used for some 302's and 327's and a ton of 350's. It was used as a basis for high performance passenger car engines as well as heavy ...Loaded in 1 ms.. There are 2,506 casting numbers in the database.2,506 casting numbers in the database.2280 posts · Joined 1999. #2 · Jul 6, 2002. It's been several years, but as best I can remember, GM dealerships sold replacement engines called "Targetmater" from the late 80's to early 90's. The engines were made in Mexico, and as best I can remember were new engines not remanufactured. In the early 90's GM had several service bulletins ...GATES 43101 Specifications. Gates Water Pumps are recognized in the industry for their durability and superior quality. Every Gates Water Pump is constructed with premium alloy materials and a 100% functional test of seals and bearings along with a 100% leakage test for both the casting and assembled water pump.It is one of the most common casting numbers for small block Chevy V8 engines from 1969 well into the 70's. It is the same block used for the ultra common 350 V8. In researching the casting number book I wrote years ago, I learned a lot about Chevrolet casting numbers. Keep in mind that 302, 327, and 350 Chevy V8 engines all used a 4" bore block.Chevy 3970010 block. Post by ventura74 » Wed Jul 26, 2017 2:42 am. Anyone know anything about the Mexican blocks? I have two with casting numbers 3970010. I've been told by a few people they are good blocks and some machinists say they know there harder by the way they machine. Just wondering if there good for a street strip block.. cobalt327. 21011 posts · Joined 2009. #2 · SThe high nickle block has the same amount of thickness Trying to dermine what year of block I have and am getting some conflicting information from casting numbers. Casting Number: 3970010 K12 from what i have read should be a 350 built 1 November 1972. Engine ID code: K01 08 CHW i have found that the CHW could be either: 1975 350 155 HP from a chevelle/1200 1978 350 m/t 185 HP from a vette/chevyII GM engine block # 3970010 was used as early as 1968 on som Good info for Chevy small block motors. Small Block Chevy Engine Block Identification --- DAN ---1978 FJ40. R. RMC73FJ40. Joined Sep 5, 2007 Threads 5 Messages 148 ... In bright sunlight with glasses on the number is 3970010. Not 387etc. Thanks for all the help. BigJim . R. RMC73FJ40. Joined Sep 5, 2007 Threads 5 Messages 148 Location ...Yes, Please make this my home page! Small Block Chevy Bore & Stroke Specifications. *Production of 305 car engines ended in 1992. +Production of 350 car engines ended in 1997. Small Block Chevy Casting Numbers. * Sometimes machined for 2-bolt mains. Note 1: Small-journal 302-CID engine uses 327 block. Sep 15, 2022 · The engine serial number in big and ...
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