Here's the applications that I found: 3970014 350 69-77 Pass,Chevelle,Camaro, Nova,Monte Carlo 2 or 4 bolt main. 3970014 350 69-79 Truck 2 or 4 bolt main. 3970014 350 72 Corvette late '72,200 HP,255 HP 4 bolt main. dustinadkins433 and Admin.3970010 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.The 3970010 casting was used on 69' 302s/327s and 69-80 350s. They were 2 or 4 bolt mains. You can find the date code on the drivers side rear of the block on the flange, front passenger side of the head pad, and on the oil filter boss. ... GM man 199 Replies. shovelrick 199 Replies. Recommended Communities. AVS Forum 1M+ members ...1548 posts · Joined 2008. #1 · Aug 6, 2015 (Edited) For years I have seen certain Chevy small block cylinder blocks, the ones with the "010/020" cast into the timing recess and behind the bellhousing flange, referred to as "high nickel" blocks. I have heard various renditions of the 010/020 designation meaning that the block has 10% nickel ...[ January 30, 2024 ] Crafting A Chevy Trucks Cowboy Boot Shift Knob Builds and Examples [ January 29, 2024 ] High Performance 1962 Pontiac Catalina 4 Speed Revival Builds and Examples ... 3970010: 350: 2-Bolt or 4-Bolt: 3970014: 350: 2-Bolt or 4-Bolt: 3970020: 307: 2-Bolt: 3970024: 307: 2-Bolt: 3999289: 454: 2-Bolt: 3999290: 402: 2-Bolt: Also ...I was looking through my 1969 Camaro Reference Book and wrote down some numbers to look for which a couple of them were the intake manifold casting # 3932472 and the cylinder head casting # 3927186 like you mentioned. The other numbers were the distributor # 1111480 and the (3) possible engine casting #'s 3932386, 3956618, and 3970010.Find many great new & used options and get the best deals for 3970010 chevy 350 block Std Bore Block at the best online prices at eBay! Free shipping for many products! ... Engine Block Parts for Chevrolet Chevy II, Engine Block Parts for Ford F-350, STD Fenders, Engine Block Parts for Ford F-350 Super Duty,Mar 6, 2013 · 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" harmonic balancer it ...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.The TBM suffix on the number stamped on the pad on the front of the engine is for a 1970 307 out of a G-10 van. The only trouble is that the casting number on the back of the block should be 3970020 instead of 3970010. If the 010 number is right you might pull the valve cover and check the casting number on the head.To SBC Block Casting Number 14010207. C3 Tech/Performance - SBC Block Casting Number 14010207 - I am having a 383 stroker built for my 71 . I had specified to the engine builder I wanted a casting#3970010 block since this was the original. I was concerned about all the accessory holes, clutch cross-shaft mount , etc.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).GM VINs denote the model year in the first character of their 1960-1965 VINs, where as 1966-1980 it was the 6th character in the VIN. This will be denoted by a single digit for the last year of a decade (1966=6, and so on). An Early Chevy Small Block Casting Date Code Block casting dates are alpha-numeric, where the first character is a …3970010 means it a 302 or 350 made between 69 and 79 for car & Truck. It had 2 or 4 bolts. you can look up here- https://chevygeek.com/chevy-block-casting-numbers-full-list …Right there was two numbers stamped over each other but that one was the most prevalent. acording to the casting number AND using the stamped suffix of TBC would make that engine a 1970 350 4 bolt main that came out of a truck with 255 HP. Gary. Category: GM. Satisfied Customers:Kdemmons Discussion starter. 4 posts · Joined 2020. #1 · Sep 7, 2020. I have a Chevy engine with the casting number 3970010 from I can see they use this for a couple of engines the VIN is v0610chf I can decode most of it except for the hf at the end can anybody help me out. Like.SNTAuto Discussion starter. 1468 posts · Joined 2011. #1 · Jan 12, 2013. I would like to know for sure what I have. It is a casting 3970010 block. Thepan is off and is a 2 bolt main. Is there any way to know if its a 302, 327 or 350 or did they all use the same crank and rods. Its deck has been milled so no numbers to get on right front side.3970010 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.The small block Chevy ("SBC") is a series of 90-degree V8 automobile engines produced between 1955 and 2003 for various GM vehicles under the Chevrolet name. Production displacement varies from 262 CID to 400 CID. Due to the long run of these engines and the high number of vehicles they were installed into, they are a very …3956618 is a generic small block which could be configured as a 302, 327, or a 350. The engine ID suffix code stamped on the pad on the block at the front of the passenger's side head will give you the specifics. You might get a better idea of possible value once you confirm what you have. Last edited by Easy Mike; 06-28-2017 at 07:22 AM.BriTon Motorsports said: Looking for original Specs in technical information on the fallowing casting number and partial engine id Casting Number :10243880 Engine ID: 1M0823 8P04. the fallowing is what I've come up with (not sure if accurate) It's a Small Block Chevy block built in Mexico somewhere near August (or possibly June) 23rd of 1996.Nov 11, 2005. 8,399. living the dream in my own world... rwflather said: I also have a 3970010 block. It has the 010 and 020 on the back and front, so I also know it is a high tin/high nickel block. The casting date is I 3 9, so I assume it is late 69/early 70 block, and is a 4 blt main block.The chance of it being a 302 is almost nil, and it being a 327 is almost as small. The 3970010 casting number was most commonly used to build 350s. Chances are probably 99.5% that its a 350. Also, he said he got it out of a truck so that eliminates the 302 and almost completely eliminates the 327. Dustinweaver, what year truck did you …Block 3 #3970010 GM 350 4 Bolt Main.Date L.16.1.Dec 16,71.Std Bore 010 High Nickel. Block 4 #10125327 LT 1 350 2 Bolt Main.Date A.21.5 Std Bore.$175 Block 5 #3970010 GM 350 4 Bolt Main.D.17.9.April 17,69.Std Bore.010/020 Front Pad CE I have a set of Nos 461 Camal hump heads with 2.02/1.6 valves with the original boxes1 post · Joined 2010. #6 · May 15, 2010. 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.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.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 a 350 Chevy engine with casting 3970010 and ...Download Ebook Chevy 350 V8 3970010 Engine Manual Read Pdf Free Original Corvette 1968-1982 Internal Combustion Engine Manual Collector's Originality Guide Corvette 1968-1982 ... Chevy Small-Block V-8 Interchange Manual, 2nd. offsite.creighton.edu Edition Camaro Restoration Guide, 1967-1969 Diesel Engine Repair Manual ToyotaChevy small block engine chevrolet casting number 3970010 plus gearboxCasting 700r4 gearbox chevy chevrolet block engine plus number Running 1974 chevy corvette l48 350 engine 3970010-soldOfferup gm. 350 sb chevy complete engineOfferup locally simplest Chevy engine sure chevrolet has tell diagram also further feel questions please reply ifChevy ...I have a 3970010 block, which was offered in both 2-bolt and 4-bolt configurations. Email Report Mike Senior Member Posts: 8136 Reg: 06-30-00. User Info. Send Private Topic ... 1966,1997,1999,2002,2005, 2008 plus 30+ other chevy cars and trucks along the way. 2008 corvette sold and waiting on a C-7. Email Report Rick_L Member #409 Posts: 28115Fresh 69 Camaro Z/28 302 DZ complete engine. This is the real deal, black casting # 3970010 casting date E 14 9 (May 14, 1969), engine pad stamp code V0527DZ (May …The blocks with the 3970010 casting number, were built 69-80 (and maybe later). They were built in BOTH 2- and 4-bolt versions. Again, it has been stated that the 4-bolt versions got higher tin-nickle percentages added to them. NOPE. ... We have another GM retiree on our CRG site who worked his career in the Tonawonda NY engine plant; he told ...Re: Engine block code 3970010 and suffix TBF. 03-11-04 09:48 AM - Post# 407727. In response to Destructo. The 010 that people refer to is the number under the timing chain cover, not the last three digits of the casting number. This engine, based on the suffix code you provided "TBF" came from either a 1970 Chevy 2wd truck which originally had ...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 ...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 ...Looking to ID further. Looking at a Chevy engine with the 3970010 casting number and trying to find out more info. The numbers on the machined pad on the front passenger side of the block are 151420105 K10 3P CMJ. From the info I'm looking at the CMJ means "1974 350 T400 Police" or "1980 305 full size/Camaro", but shouldn't the 9 …Mar 6, 2013 · 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" harmonic balancer it ...About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright ...The chance of it being a 302 is almost nil, and it being a 327 is almost as small. The 3970010 casting number was most commonly used to build 350s. Chances are probably 99.5% that its a 350. Also, he said he got it out of a truck so that eliminates the 302 and almost completely eliminates the 327. Dustinweaver, what year truck did you …DoubleVision. you can use any harmonic balancer from the small block chevy line, except the 400 small block, which is externally balanced. Stock balancers differ in diameter and weight, and the timing marks are in different places on different engines, I`d recommend the use of the 6 or 8 inch balancer with the timing tab at the 2 o clock position.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.Zerostart 3400017 Portable Electric Heat Magnet Heater/Transmissions, 120V, 200W. $76.93. Trending at $83.32. Find many great new & used options and get the best deals for 350 SBC Chevy Small Block Engine 2 Bolt Main 3970014 1975 at the best online prices at eBay! Free shipping for many products!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. Four bolt main blocks are desirable in high performance applications because the extra strength of ...Chevy Casting Number identification including Block casting numbers, cylinder head casting numbers, Crankshaft and intake casting numbers.Jan 22, 2007 · C3 General - Block casting GM 41 3970010 with a 78 date code. Whats GM 41 mean? 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. Did all the 010...Chevy GM 3970010 series Engine Block with 4-Bolt Mains and connecting rods with ARP bolts, chrome oil pan . series 010 casting nodular iron. 350 cubic inch bored .030 over Will need honing and clean up , . call me at show contact info ask for Tom. post id: 7740204564.Mar 23, 2005 · Needed freezeplugs and cambearings and was ready for assembly. Took him FOREVER to find a buyer at $200, then the person that finally bought it was happy as a clam to have found it. FYI...not all 3970010 castings are high nickel. A "010" cast in the area behind the timing gear would denote a high nickel block.350 sb chevy complete engine$199 gm 3970010 chevy engine block tyz corvette, camero or conv. cab 700r4 casting gearbox chevy chevrolet block engine plus number350 engine l48 chevy 1974 corvette running. Offerup locally simplestChevy 350 engine block 3970010 for sale in surprise, az Engine sb chevy complete yorkshire located westRunning 1974 ...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. geemann51. Member. from Fischer, TX. I just picked up a SBC 3970010 4-bolt block. Mortech lists this as a 69 327 or a 69-80 350. I'm assuming it's the latter, but how …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 ...Chevy Chevrolet small block V8 engine casting numbers - WaywardGarage.com - Hot Rods - Musclecars ... 3970010: 350: 69: Corvette: 4-bolt main, late 69: 3970010: 302 ...Mortec also has information on Chevrolet V-8 bore and stroke numbers, GM crate motors, Holley carb tuning tips, and crankshaft journal sizes. We are constantly adding new engine codes and auto parts to the site. Since 2012, Mortec hosts free car mechanic forums, staffed by seasoned auto technicians with unmatched experience and a passion for ...$199 GM 3970010 Chevy Engine block TYZ corvette, camero or conv. cab. Check Details. Q&A: Small Block Chevy Casting Numbers 3970010 - Explained. Check Details. Puzzled about my Engine Codes, please Help! - Camaro Forums - Chevy. Check Details. Chevy 350 / 325 HP High Performance Balanced Crate Engine - Five Star.Chevy Casting Number identification including Block casting numbers, cylinder head casting numbers, Crankshaft and intake casting numbers. ... 3970010. 69-79. 302/350 ...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.SBC V8 305 SMALL BLOCK CHEVY ENGINE MOTOR 2 BOLT MAIN 14094766. + shipping. Engine 8-350 5.7L Gasoline VIN K 8th Digit Fits 87-96 CHEVROLET 30 VAN 173k Mile. + $300.00 shipping.Find many great new & used options and get the best deals for SBC 350 V8 ENGINE BLOCK 3970010 4 BOLT MAIN SMALL BLOCK CHEVY FOR PARTS at the best online prices at eBay! Free shipping for many products! ... Engine Block Parts for Chevrolet Chevy II, Engine Block Parts for Ford F-350, Engine Block Parts for Ford E-350 Econoline,Need to know gm engine id number 3970010? Updated: 10/24/2022. Wiki User. ∙ 14y ago. Best Answer. 4bolt 350ci. Wiki User. ∙ 14y ago. 4bolt 350ci.The block casting number you gave doesn't exist, but it is fairly easy to figure out what you meant...."397010" is a digit short, the actual number is probably "3970010" which is a 4.00" bore block made from 1968-1979. The date code "B125" come out as "B" = February, "12" = day, "5" = last digit of year, which for that block casting would have ...item 3 sbc 350 v8 engine motor block 3970010 4 bolt main mj21800 made in mexico gm 2 sbc 350 v8 engine motor block 3970010 4 bolt main mj21800 made in mexico gm 2. $699.99. item 4 sbc 350 v8 engine motor block 3970010 2 bolt main small block chevy 30 over sbc 350 v8 engine motor block 3970010 2 bolt main small block chevy 30 over. …The 327 Chevy engine has 365 horsepower at 3,200 rpm. The 327 cubic inch displacement top-end carbureted V8 motor has a bore and stroke of 4 inches by 3.25 inches. The torque rating is 350 lb-ft. at 4,000 rpm. The compression ratio is 11:1. The compression rating is 140 pounds per square inch. We have much more information about the ever ...item 3 Free Shipping - GM Chevy 5.7 350 Short Block 1967-1979 3970010 w/ free hat! Free Shipping - GM Chevy 5.7 350 Short Block 1967-1979 3970010 w/ free hat! $4,890.00Alternator and Power Steering Brackets Kits, Billet Aluminum, Natural, Saginaw P Series, Long Water Pump Style, Chevy, Small Block, Kit. Part Number: ICB-551576. 4.41 out of 5 stars. Estimated Ship Date: Tuesday 5/28/2024...Loading Estimated Ship Date: Tuesday 5/28/2024.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.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 ...Check Details. GM 3970010 - 4 Bolt Main Block Original Chevy 350 Motor Engine for Sale. Check Details. 434 chevy engine. Check Details. Chevy Small Block Engine Chevrolet Casting Number 3970010 Plus Gearbox. Check Details. $199 GM 3970010 Chevy Engine block TYZ corvette, camero or conv. cab. ← 396 Jeep Wrangler 3d Print Wide Body Kit →.On the block, back of the driver side: GM 3970010. So it is a 350 cu. in, right? 2. On the block, back of the passenger side: could not find date code. ... The casting was used in 1976 for 350's for sure, But,,,, The 3970010 block is probably the most plentiful small block casting ever, and just happens to be ripe for using to build a 302, 327 ...GM p/n 471529 for 12.75" 153 tooth w/ Converter Bolt Pattern of 9.75" or 10.75" (measured across) or GM # 471598 for 14" 168 tooth w/ Converter Bolt Pattern of 10.75" or 11.50". if you have a 10.75" converter pattern, match the flywheel to the starter so you won't have to buy a new starter. "When used separately, women and alcohol can be alot ...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. Trending Questions .$199 GM 3970010 Chevy Engine block TYZ corvette, camero or conv. cab. Check Details. Q&A: Small Block Chevy Casting Numbers 3970010 - Explained. Check Details. Puzzled about my Engine Codes, please Help! - Camaro Forums - Chevy. Check Details. Chevy 350 / 325 HP High Performance Balanced Crate Engine - Five Star.2 Answers. 3970010 = casting number of an 350 small block. V0408TDR = V - motor made in Flint, 0408 - made in april 8th, TDR - in 1980 for an californian sold car with 155 hp, auto trans and C-10 body. C8F438333 = partial VIN number, it should match the VIN on the body of the original car: C - engine code, Chevy small block; 8 - engine model ...6269318. 454. 72. Holley. Rectangular port Aluminum. Chevy Casting Number identification including Block casting numbers, cylinder head casting numbers, Crankshaft and intake casting numbers.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 ...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 ...Posts: 186. 3970010 Engine Suffix Help. I recently purchased a 67 Sb 2wd. The seller did not know which engine it had but suspected it was a 305 or 307. The Engine Casting number is 3970010 and the Suffix is V0199800 (Front Passenger Side of engine). The Casting number is leading me to believe it's a 350. It's highly doubtful that its a 302 …GM of Mexico: For a complete list and breakdown of Small Block Chevrolet Suffix Codes, visit Nastyz28.com. 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. ... 3970010: 327 - - 2: A: 1969-79 ...Info on gm block 3970010 looking for all origanal. That is just the casting number indicating it might be a 4-bolt main 350. You will need the stamped numbers on the block right in front of the passenger side head. Read full answer. Jul 26, 2016 • Cars & Trucks. 0 helpful.This same basic block served in a LOT of different applications. Basically, it is just a large journal 350 block. It is a platform for EITHER an economy-oriented low-horsepower cruiser which gets maximum gas mileage on the highway, or for a really hot race-only engine...depending which parts you add to it.. Countless engines intended for …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 TBM suffix on the number stamped on the pad on the front of the engine is for a 1970 307 out of a G-10 van. The only trouble is that the casting number on the back of the block should be 3970020 instead of 3970010. If the 010 number is right you might pull the valve cover and check the casting number on the head.Any of the caps on a stock block other then the 2482 are just a std. grey cast iron cap. Now the 400 4 bolt center caps are nodular iron cap same material as the 2482 350 center caps. Hmm, so all of the 2 bolt caps are gray, as well as #1 and #5 on 4 bolt engines, 350 and 400]. Interesting.It is a 3970010 4 bolt main 350. Dished pistons with the valve relieves. Cam had one rounded off lobe and the lifter that ran on that lobe was concaved. Heads are 3998991's This seems to be a low compression smogger type motor. Other than the cam lobe all the other items including pitons are in very good shape.yes most all 3970010 are 350, but some in '69 were passenger car 327 and 302 camaro blocks, in which are the same 4" bore like the 327 were as well, in which also shared this block casting. but since it has the three digit suffix stamping code (CKL) it will be a 1970 and later engine. 3970010 was from 1969 to 1979, car truck or van, and can be ...Lot of variables may affect your decission. C1 & C2 Corvettes - Anyone know this block GM 41 3970010 - I know its a 350, (I believe), has a drivers side dipstick and a 8 for its build year. I would think 1978 cause the small pad in the front of the engine is the smaller square shape not the longer more narrow older style pad for 1968.3932386, 3956618, 3970010 were used for the 69 DZ block and were all 4 bolt blocks. All the above block casting numbers were ALSO used for 327 motors. Check the numbers and good luck . Gold Founding Member #158 Old Blue The TC Search >> HOW-TO TC photo >> HOW-TO. Save Share. Like. F. frank rizzo Discussion starter ...GM Engine Stamping Info Please. top left "corner" GM 3970010 and in the next "bay" is 11. Pretty sure this isn't a "south of the border" block as no Hecho En Mexico stamping. I was told this is a mid-70's block....true or false? As you can see this was a rather common casting number.. Jan 22, 2007 · Anyone know this block GM 41 3970010. I know iSome smallblock blocks may also have the BL I have a choice of 2 clean std bore blocks to use for a 383 mild street build max 500 HP, 1 is 3970010 4 bolt with good sonic test etc. Other one is GM Goodwrench Mexico build 10066036 4 bolt with little use, not yet sonic tested. Is there any advantage in using the Mexican late model 2 piece seal block ? if so, can anyone let me know details ...Moreover, since our sources indicate that the 3970010 block debuted in about April of 1969, an October-dated 3970010 block seemingly could not have been used in a 1969 model vehicle (GM factories tended to switch over from one model year of production to the next model year in July each year. Hence, an October of 1969 component would normally ... Item description from the seller. Up for sale: CHEVROL What is gm casting number 3970010? It's a 4" bore block. Has been used for 302, 327, and 350 engines. What is gm block casting number 397010? Find many great new & used options and get the bes...
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