Gm 3970010 block number

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This is what i have on you #s 3970014 block =350 1970-1976 can either be a 2 or 4 bolt engine. don't about the 200hp. Cole. Like. C. Canuckcamaro Discussion starter. 32 posts · Joined 2011. #3 · Mar 10, 2011. Yeah that is …These 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 heads.Loaded in 1 ms.. There are 2,506 casting numbers in the database.2,506 casting numbers in the database.block casting number is 3970010. The numbers I can't nail down are on the passenger side front of block. top one is "K12 12 TMR" under that and lower is "C41129113". looking on some other sites i have found this info: 1) TMR= 1980 350 out of a van,bus,a/t,cal. body style c-30 or 3500. 2) 1968 3970010 327. 1969-79 350 out of car/truck vet.Mar 15, 2014 · [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.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.

Have a small block that I recently purchased and was told it was a GM crate motor. Upon further inspection I found the casting number 3970010 on the block which I see online as a 69-79 350 2 or 4 bolt mains. Only other numbers I see in that area is a K 1 above the oil filter casting.Specifically, to do a GM engine serial number lookup, take a look at the 8th digit of the VIN. Note that the code may overlap. For example, a ‘G’ signifies that it has a 5.7L LS1 engine. However, it may also mean it’s a 6.0L L96 Vortec 6000 engine (and if you own one, be wary of the Chevy 6.0 engine problems).All these are identified here. Quickly, A = Chevelle, F = Camaro, X = Nova. If you're looking at the engine code - this is already known. If you're looking at the casting # information and it mentions 3970010 "A/F/X/Y/B".... basically this means "it's used in everything", whereas if it simply states "Y"... this means Corvette. Decoding small ...What year is the Chevy motor with the casting numbers of gm 3970010? it is a 1969-1979 motor it was used in cars, trucks, and vettes ... What year is your 350 with block numbers vo802ckd casting ...Gm casting number 3970010 but what is the A81 on the passenger side? A81 should be January 8, '71,'81,'91. ... 2 bolt engine block number 3970010 350? This does not appear to be a question.i have a small block 3970010. lg1969 said: It's used on 69' 302 Z/28 4 bolt main. 327 truck and industrial. 350 from 1969 - 1980. The block can be either 2 or 4 bolt main. You have to look at suffix letter in front of the block on the pass. side. Behind the alt. There two or three letters.Apr 28, 2014 · How to find out the CID of a 3970010 engine number identification. 3970010 shows 68-1969 327 2 bolt and also shows 69-1979 3970010 350 185 370 2. This id # located on drivers side rear engine block stamped on pad. R.S.rear engine block has c-110 on it and R.S. front engine block has 12347 and drivers side of block 371 and 386 and 11618N suffix ...

I got a freebee block that I am trying to sell but I nned to ID it first. The casting number is 3970010, and the code stamp/suffix is V0709HV. From what I found the casting number indicates it is 1969-79 350ci for a car, truck, or Vette. But then the suffix code indicates it was built July 09, 1965 and is from a 327ci Vette.re: 3970010. Can you post the id letters and numbers that you see on the engine block on the the small extension of the block surface just below and ahead of the head on the passenger side. I have some books that might reveal some info re: the year of the engine. BTW my own 383 stroker has a number that I cannot seem to find anywhere yet.There is no way a 3970010 could have came in a VanNuys 12B built 69 Camaro. the 3970010 V0926DZ stamped block is most likely from later 69 and that casting date is probably I 18 9. Sometimes the 9's look like 8's. Team Camaro Gold Member #14. 1969 Camaro RS/SS Azure Turquoise.May 15, 2008 · 1 post · Joined 2011. #11 · Jul 7, 2011. Ray J Neal said: Based on the suffix TJA I found it is one of two motors. 1973, 160hp conversion cab truck, or 1979, 165hp forward cab w/ AT. Based on the 3998991 heads (1972/1973) I would think it is the 160HP model. So Pretty much LOW compression motor.I need to know how to tell if i have a chevy 302 motor the block number is 3970010 is there any other markings how to. Customer Question. ... Here is my 350 chevy block numbers TLF700392 and the other block number is XXXXX and the heads have J128 and1416616.Can you tell me the horse power?It is in a 1971 chevy pickup.And if it is a 1971? Th ...I was with the understanding that a 010 or 020 cast in the block under the timing chain cover WERE higher nickel alloy content. 3970010 casting number alone did not signify high nickel, but the casting numbers under the timing cover were. The 3970010 block were a good place to "start" when looking for a high nickel content block.

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I need to know how to tell if i have a chevy 302 motor the block number is 3970010 is there any other markings how to. Customer Question. ... Here is my 350 chevy block numbers TLF700392 and the other block number is XXXXX and the heads have J128 and1416616.Can you tell me the horse power?It is in a 1971 chevy pickup.And if it is a 1971? Th ...A casting date indicates it could be a 1975 motor. I appreciate any help you can give me. Block 3970010 used on 350 CI corvette from 1970 thru 1979, also used on camaros. CMB engine suffix is from 1972 and 1975 camaro 350 CI engines. Looks like you have a 1975 camaro 350 CI block in the car manufactured in the Flint engine plant on April 7.Decoding/Numbers » 3970010 engine decode help ... 2018, 02:18:23 AM » I acquired what I was told was a 1969 350 that was taken out of a 1956 Chevy Belair in good running condition to be replaced with a 383 and 5 speed. Casting number - clearly 3979910 ... This block is from the 70's. The VIN derivative is probably under the paint on the stamp ...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.Chevy small block engine chevrolet casting number 3970010 plus gearboxOfferup locally simplest Casting 700r4 gearbox chevy chevrolet block engine plus number smallPulled from 1983 silverado chevy 350 engine motor 4 bolt main block. Check Details. Chevy small block engine chevrolet casting number 3970010 plus gearbox. Offerup gm bolt .. Check ...1 post · Joined 2008. #1 · Aug 3, 2008. I have recently aquired a chevy small block and I'm having trouble finding out exactly what it is. I have found Four numbers. 3970010 along with "hecho en mexico" on the back drivers side. 254 on the back passenger side. 010 on the drivers side in front of the oil filter. and the engine code is "MK01800."

| 1968, 1969, 1970, 1971, 1972, 1975, 1976, C3, casting, Corvette, engine, exhaust, left, manifold, number, numbers, rightThe block # is 3970010. I ordered this engine new over the parts counter from a Chevy dealer in 1972. I thought it was a 1970 LT1, but the CEC prefix doesn't match up with anything I can find in the books. ... 1972 when I paid Luby Chevrolet in Denver, CO $434.36 for a block with part number 3966921. According to information I have found on …Chevy Casting Number identification including Block casting numbers, cylinder head casting numbers, Crankshaft and intake casting numbers. ... 3970010. 69-79. 302/350 ...3970010 Block Engine & Drivetrain. Register or Log In To remove these advertisements. The 1947 - Present Chevrolet & GMC Truck Message Board Network > General Truck Forums > Engine & Drivetrain: 3970010 Block Web 67-72chevytrucks.com: User Name: Remember Me? Password ...Found a motor on FB marketplace and theres a number on the front of the block I havent seen before. ... The block is a 3970010 sbc, but on the front of the block next the timing chain cover is the number 509. Need to make sure this block is ok for what I need it for. ... New Member. Joined Mar 11, 2023 Messages 1 Karma 0 Car 1967 Chevy Malibu ...back block number=gm 39700010 thank joe68. joe68. 10-30-2006, 08:50 PM. ... The block identification would be the same on either (as above, usually these were 3970010 - alternatively, just 010 - blocks). To determine whether your engine is a 327 or 350, you could measure the stroke or pull the pan off the block and check the crank …Don't forget to follow us on Facebook, and if you run a website or write for a blog, please link to our site! Chevy V8 Casting Number Locations. Chevy V8 SBC Block and Head Casting Numbers. Chevy V8 BBC Block and Head Casting Numbers. Chevy V8 "W" Motor 348-409 Casting Numbers. Chevy V8 Crankshaft Casting Numbers.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".Chevy Small Block Engine Casting Codes. First Generation Pictures; ... The Engine Block Casting code is one of the best ways to identify a Chevy engine block. This Casting number is usually found at the rear of the block on the left or drivers side on top of the bellhousing flange. ... 3970010 : 1969-69 : 350 : 255-3503970010 350 block is what I'd call the normal 350 4 bolt main block. GM used millions of these over the years. Some of them have 2 bolt caps installed. same block casting is used for both 2 and 4 bolt caps. AFAIC a real 69 Z/28 302 block will have the 386 casting number and the partial VIN ending in the DZ code stamped into the front of the ...Need 70 Z-28 Block Casting Number. Hi, and thanks in advance for any help. I am looking at a June 1970 Z-28. It has a 3970014 block in it. I thought they came with the 3970010 blocks. The seller swears that he has had many 1970 Z's with the 3970014 blocks, and they are original. My books show the 3970014 was used in a 70 camaro but with the 300 ...

Ok you have a 3970010 block, now look at the date code on the back of the block. If the date code is anything higher than 71 it is a 350. 68-70 it could be a 302, 327, or 350. The 302 block had additional stamping that read DZ, most likely it is not a DZ block. Next look at the heads and crank, check the casting numbers and dates on the heads.

What year is a 350 Chevy engine with casting no 3970010 and c5j129384? Updated: 9/14/2023. Wiki User. ∙ 15y ago. Best Answer. casting number 3970010 is a 350 block from 1969 - 1979 but in 1969 ...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 ...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 ...GM engine block # 3970010 was used as early as 1968 on some 327ci engines. From 1969-1979 it was a 350ci engine. It could be a 2 or 4 bolt block used in cars, trucks and even corvettes. Casting number 3970010 is a common small block engine casting. It was used in 1968 on the 327 2-bolt engines used in the "A" body, and it was used as a 350 ...Are you looking for a fun and engaging way to boost your brainpower? Look no further than free block puzzle games. These addictive games not only provide hours of entertainment but...Small Block Chevy Suffix Codes: HR - TBS. GM body designation. All these are identified . Quickly, A = Chevelle, F = Camaro, X = Nova. If you're looking at the engine code - this is already known. If you're looking at the casting # information and it mentions 3970010 "A/F/X/Y/B".... basically this means "it's used in everything", whereas if it ...3970010 350 70 Corvette 300, 350, 370 HP Bolt Main 3970010 350 71 Corvette 270, 330 HP, 4 Bolt Main 3970010 350 72 Corvette 200, 225 HP, 4 Bolt Main So- It appears the casting number in this case was used many years (68 to 79) to build 302/327/350s. You might be able to narrow it down from the stamping on the front of the block.

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According to most sources, the 3970010 casting was used for '68 327, and '69-'79 or '80 350 engines, and possibly one year for a 302, but not the 305, which has a different bore. Two numbers don't add up here. Assuming a 350, which didn't come out until '69, the block date code would be from '78, but the second digit of the VIN code (6 ...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.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.Anyone know this block GM 41 3970010. ... Looking through my 1965-69 chevrolet by the numbers book this block came into production sometime in late april or early may of 1969 and was used through 1975.It was produced in 2 and 4 bolt application except for 1969 which were all 4 bolt main.They also explain that the date should have three digits ...Loaded in 1 ms.. There are 2,506 casting numbers in the database.2,506 casting numbers in the database.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 year is a 350 Chevy engine with casting 3970010 and 15y146329? The back of the block will have a series of letters and numbers cast into it. That is what determines the date.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 ...Jan 3, 2022 · GM engine block # 3970010 was used as early as 1968 on some 327ci engines. From 1969-1979 it was a 350ci engine. It could be a 2 or 4 bolt block used in cars, trucks and even corvettes. Casting number 3970010 is a common small block engine casting. It was used in 1968 on the 327 2-bolt engines used in the "A" body, and it was used as a 350 ...From Chevy-Camaro.com. The casting number 3932388 was only used in 1969 and is rare because not many cars much less Camaro's got this block casting number that are known. The book Chevrolet By the Numbers 1965-69 says this engine was put in 1969 passenger cars and Camaro's. Their notes say this: "Very little is known about this block". ….

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.Re: 3970010 Block Seems to me like the late '70s and '80s blocks had the last 3 digits of the block casting number on the side of the block, don't know why though. 2003 S10, 2.2 auto- the daily driver, currently with a 2"/2" drop and some minor engine bolt-onsAnyone know this block GM 41 3970010. ... Looking through my 1965-69 chevrolet by the numbers book this block came into production sometime in late april or early may of 1969 and was used through 1975.It was produced in 2 and 4 bolt application except for 1969 which were all 4 bolt main.They also explain that the date should have three digits ...1. Location. Dallas, TX. Car. '82 Chevy K20. Jan 3, 2015. #2. Casting No. 3970010 = '69 327 from Camaro, '69 327 from trucks and industrial, or '69-'80 (vehicles unlisted). You'll need at least your assembly date (number stamped in front of pass side head, which is No. 4 on the location diagram on this site) to narrow it down, assuming that ...Feb 22, 2012 · S. shooter1951 Discussion starter. 2 posts · Joined 2009. #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.Big Block V8: Date: 1968-1969: Notes: 396, 2 bolt or 4 bolt, Truck: Added to DB: December 25, 2010 (4898 days ago) Loaded in 1 ms. There are ...In today’s digital age, protecting your privacy is more important than ever. With the increasing number of unwanted calls and telemarketing scams, it’s essential to have the tools ...Earlier this year, GM announced plans to go green by 2035 with the vehicles it produces and by 2030 with how it produces them. Now, the company has announced that it will be early ...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.C3 Tech/Performance - Small Block Engine Numbers - I just inherited a complete small block engine and could use some help interpreting the numbers. Casting number: 3970010 (350 with 2 or 4 bolt mains?) Pad - 2 numbers: 111201979 (1979 ?) and K0609CGC. Thanks for the help. Brian :seeya Gm 3970010 block number, High Nickel GM #3970010 Engine Block "010 020" Marked Block decoding High Nickel! I estimate this motor makes around 420hp at 5500rpm and around 450ft lbs torque. ... Interchange Part Number. 3970010 CTC, LT1 350 360HP, LT1 350 370HP, 1969 Z/28, 3927186 HEADS, L48 300HP, 1970 CAMARO SS ENGINE, 3972116, 3972110, ss rs camaro motor engine, 302 DZ ..., 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 ..., A simple Google search for the TBC engine code would have taken you to www.nastyz28.com and you would have found the following: TBC 1979 350 conv. cab, m/t,fed L LS9 165 4 C-10 to 2500. Your engine was a 350 from the factory with a manual transmission behind it in either a 1/2 or 3/4-ton pickup, and it put out 165 horsepower from the factory ..., The number on the back of the block is 3970010. The number on the front of the - Answered by a verified Chevy Mechanic. ... small block chevy motor casting number(NNN) NNN-NNNNwas wondering how i can tell if this is a four bolt main with out removing the pan thaanks ..., 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 – ... 3970010: 327 – – 2: A: 1969-79 ..., re: 3970010. Can you post the id letters and numbers that you see on the engine block on the the small extension of the block surface just below and ahead of the head on the passenger side. I have some books that might reveal some info re: the year of the engine. BTW my own 383 stroker has a number that I cannot seem to find anywhere …, I have a 1969 small block chev that I would like help to verify what it is.block cast number is (3970010) the stamped number on cylinder head deck are ko4 13 ckj another one 3€€21283 and the last is 231517240. Any and all help would be appreciated. Thanks Jerry Lizotte Ontario Canada. On 19/08/2022 at 4:27 PM Reply, First, small block chevy block castings changed certain features over the years, and early model 3970010 blocks had a longer pad in the numbers-stamping area in front of the passenger cylinder head. The short, almost square pad you show in your photos is from mid-to late 1970's., Alan L. Colvin Corvette by the numbers also mentions that the 3970014 blocks were cast at the Tonawanda "metal casting plant" in 1972, however Alan's book also states that there were 5 facilities producing the block and that it is possible that one of the remaining four plants produced the block., That casting number is the most common 4" bore block that GM ever made. Depending on your use, the clearance could change. High performance and racing engines usually use clearances a little loose to compensate for higher oil volume and pressures. For a stock rebuild I shoot for between .002 and .003, trying to get right around .0025. Gary, 2749 posts · Joined 2012. #4 · Jun 25, 2015. If I remember correctly, the casting number should be located on the rear of the block, on the driver side. Just in front of the tranny mount and below where the head bolts on. The casting number should identify a range of years and models that block was used in. Les., I know that there was a big shakeup in 1969 where GM changed the structure and put all drivetrain into a division, and from that time forward casting numbers appear to be shared, for example 3970010 blocks appear across Tonawanda, McKinnon and Flint engine plants from mid 1969., Big Block Chevy Dart 308, 320, 340, 360, 370, PRO1, Iron Eagle Step 1: For best results, it is necessary to check the stud girdle for fit before final installation. The stud girdle is designed to fit only Dart 308, 320, 340, 360, 370, Pro1, and Iron Eagle cylinder heads. The application is stamped on the stud girdle., Are you looking to improve your English speaking skills and speak fluently? Speaking good English fluently is a valuable skill that can open up numerous opportunities in both perso..., These are actually core box pattern numbers for block casting assembly. I will look for the post and add a link to this thread. ... The blocks with the 3970010 casting number, were built 69-80 (and maybe later). They were built in BOTH 2- and 4-bolt versions. ... I have seen GM uses the 010/020 block and the 010 K block. Pre 86, 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., This is what i have on you #s 3970014 block =350 1970-1976 can either be a 2 or 4 bolt engine. don't about the 200hp. Cole. Like. C. Canuckcamaro Discussion starter. 32 posts · Joined 2011. #3 · Mar 10, 2011. Yeah that is what i have come up with also but there's a few., 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., 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., Specifically, to do a GM engine serial number lookup, take a look at the 8th digit of the VIN. Note that the code may overlap. For example, a 'G' signifies that it has a 5.7L LS1 engine. However, it may also mean it's a 6.0L L96 Vortec 6000 engine (and if you own one, be wary of the Chevy 6.0 engine problems)., Chevy small block engine chevrolet casting number 3970010 plus gearbox 700r4Gm 350 engine block #3970010 chevy truck chevrolet Gm 3970010 2 bolt main block original chevy 350 for sale in black diamond, wa1969 302 350 sbc small block chevy 2 bolt main engine block 3970010 010 d-23-9., The exact same blocks running down the exact same assembly line were drilled both ways. First, small block chevy block castings changed certain features over the years, and early model 3970010 blocks had a longer pad in the numbers-stamping area in front of the passenger cylinder head., Apr 14, 1999. 25,179. Bismarck, North Dakota. They are basically the same. Chevy made both castings and used them pretty much interchangeably over the years. The 3970010 seems to have been made in much larger …, VF292800 - is an example of a over the counter crate engine. "2800" is the last 4 digits of the GM part # for the crate engine assembly. The final digit could be a year code. Another example: A Targetmaster engine (p/n 14009800) built in 1985 could have a code stamped as follows: A0198005 (A = january, 01, 9800 = pn, 5 = 1985)., I've got a 350 SBC that I'm rebuilding but I'm not sure of the year of the block and I need to order my gasket set; I thought I had casting codes in one of my books, but I was wrong. Hoping for some help. . .. . .here's the casting code: GM 3970010 I don't know the engine ID number (I will find out tomorrow when I pull the heads off though)., What year is a 350 Chevy engine with casting no 3970010 and c5j129384? casting number 3970010 is a 350 block from 1969 - 1979 but in 1969 302 and 327 have the same casting # and im not to sure ..., 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 ..., J. javamxcars Discussion starter. 7 posts · Joined 2006. #1 · Nov 16, 2006. I speak with a lot of friends , and the opinon is the same , the question is: the chevy block 3970010 with number 010 .020 is for the nickel ,ok is it for 1% tin and 2% nickel or is 10 % tin and 20% nickel ? Like. 10. #Lemanster: Our Ultimate Road-trip Cruiser Build!, Chevy block small casting 700r4 gearbox chevrolet engine plus numberCasting chevy number gearbox 700r4 chevrolet block engine plus small 350 sb chevy complete engine$199 gm 3970010 chevy engine block tyz corvette, camero or conv. cab., Mar 21, 2019 ... Comments80. William Lesh. Chevrolet mechanic 20 plus years. Only way to know it's a 4-bolt main is to ..., Jan 26, 2009 · 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., 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 ..., Thanks - I have a 69 with a block cast as GM 41 3970010 I believe its a 1978 block (J 78) and it has the smaller front pad, which is blank. The dipstick is on the drivers side. No made in Mexico script either in the back. ... The '41' on your block is called "pattern serial number 41". The foundry poured 2 castings per cask (in this case, it ...