Chevy 3970010

Join Date: Mar 2009. Location: Booneville,Ms. Posts: 505. 350 sbc question? 3970010 How much HP? Ok I have a 3970010 block and on the back of it where the flexplate goes its got 010 stamped on it with 020 right under it. It's a 4 bolt block and I just bought another one and its got the same stampings but this one runs and I …

Chevy 3970010. The block is a 3970010 350 and I will go from there. When i dissassembled the engine I found that the engine had been rebuild already with very low miles on it. The inside is a clean as if I just built it, there is NO top edge on the cylinders and the bearings look great. The pistons look like new except for the carbon on top and are stamped .040.

3970010: 68-76: 350: 4-bolt: 3970020: 68-73: 307: ... just recently bought a 55 chevrolet 2 door sedan delivery .trying to pin down the motor size ..cant locate any ...

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.Sep 7, 2020 · 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. 1265 posts · Joined 2016. #4 · Apr 21, 2022. 350 truck motor – 4 bolt main VO217WK used in C10 to C35 trucks and industrial equipment came out of a MF combine. Built in Towanda, MI. Block 3956618 date B129 (Feb 12, 1969) Also used in 1969 302, 327, and 350. Heads 3927186 date: G318 (July 31, 1968) 64 cc, used on 69 302 SAVE FOR WHITE 68.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 ...American-made Chevrolet is one of the best-selling brands in the United States. If you are in the market for a used Chevy, whether a sedan, truck, SUV or sports car, this article h...The 3970010 number on a 350 was found on the back of your block. Its a base number for that cubic inch motor. Its been there on multiple years of 350. It is also used for all kinds of applications from light cars to heavy duty trucks. all with different compression. There is no way to get compression ratios with that number. Use the …

Chevy engine numbers are serial numbers located on the engine lock of Chevrolet vehicles. These number contain valuable information about where and when the engine was manufactured... SBC 350 V8 ENGINE MOTOR BLOCK 3970010 2 BOLT MAIN SMALL BLOCK CHEVY 30 OVER. Pre-Owned. 1 product rating. $749.99. camaro-parts-world (26,333) 99.9%. Was: $999.99 25% off. or Best Offer. Freight. SBC 350 V8 ENGINE MOTOR BLOCK 3970010 4 BOLT MAIN MJ21800 MADE IN MEXICO GM 2. 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.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. Sort by Oldest first.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.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.

The block is a 3970010 350 and I will go from there. When i dissassembled the engine I found that the engine had been rebuild already with very low miles on it. The inside is a clean as if I just built it, there is NO top edge on the cylinders and the bearings look great. The pistons look like new except for the carbon on top and are stamped .040.3970010: 68-76: 350: 4-bolt: 3970020: 68-73: 307: ... just recently bought a 55 chevrolet 2 door sedan delivery .trying to pin down the motor size ..cant locate any ...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.Material Type: Billet Aluminum. $83.98. /each. Add to Cart. Showing all 21 result s. Shop Feedback: Did you find what you are looking for? 1978 Chevy C10 Chevy Small Block V8 350 Chevy Small Block V8 Accessory Drive Belts 1978 Chevy C10 Chevy Small Block V8 350 Chevy Small Block V8 Engine Pulley Sets 1978 Chevy C10 Chevy Small Block V8 …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 ...

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May 15, 2008 · R. Ray J Neal Discussion starter. 26 posts · Joined 2008. #6 ·May 16, 2008. 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. 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.To add coolant to a Chevy Malibu, dilute the coolant with equal parts coolant and water, then pour the coolant-water mixture into the vehicle’s coolant reservoir. The coolant reser...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: ...

So; my 71 C10 had the original 307 swapped out by the previous owner. He disclosed that it was a freshened up 305 believed to be from an ‘82 Camaro. However; it has the 3970010 casting number on the rear of the block. Engine suffix code stamped on the pad behind the alternator says C2R, which comes up as an ‘82 4bbl 305 with a whopping 155hp.3959538 - 327 CID, 2-bolt main, Chevy II recessed oil filter, # used for some Chevy II "CE" replacement blocks 3970010 - 302 CID, 1969, 4-bolt main, "Z-28 Camaro" block Casting Date 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 = Jun, G = July, H = Aug, I ... This How to video will show you how to find or locate the casting numbers on your small block chevy engine block. This will show you how to also look up the ...ARP MAIN STUD KIT 209-5401 FOR VAUXHALL/OPAL 2.0L 16 VALVE. $124.95. Be the first to write a review About this product. Pre-owned: Lowest price. Add to cart. Find many great new & used options and get the best deals for 1955 Chevrolet 265 Engine Block Corvette (3703524) at the best online prices at eBay! Free shipping for many products!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."Chevy 3970010 Small Block 350 Engine Bare Block 4 Bolt ARP Main Bolts Standard. ... Listed 9 weeks ago in Mims, FL Door pickup. Message. Message. Save. Save. Share. Details. Condition. Used - like new. Small block Chevy 4 bolt main 010 engine block. Has been cleaned and checked. Has new ARP main bolts with it. TFS stamped should be ...item 5 GM Chevrolet 302 327 350 Camel Hump SBC Rebuilt Cylinder Heads PAIR 3917291 OEM GM Chevrolet 302 327 350 Camel Hump SBC Rebuilt Cylinder Heads PAIR 3917291 OEM. $799.99. Free shipping. item 6 SBC Small Block Chevy 350 Cylinder Head Bare Straight Plug Aluminum SBC Small Block Chevy 350 Cylinder Head Bare Straight Plug …Is My Chevy A 350 With This Casting Number 3970010? Hi chevy70 . just like the boys are saying, it all depends on which crank (stroke) you are using. I have two …

Oct 6, 2022 · 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. The balance is also correct 8" GM balancer correct for the timing cover.

The 3970010 number on a 350 was found on the back of your block. Its a base number for that cubic inch motor. Its been there on multiple years of 350. It is also used for all kinds of applications from light cars to heavy duty trucks. all with different compression. There is no way to get compression ratios with that number. Use the …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 …Fast shipping, item as described. A+++++ eBay seller, thanks! CHEVROLET 1971 350 STD 4.00' BORE 3970010 ENGINE BLOCK 2 BOLT CCA A F X BODY CAMARO CHEVELLE NOVA 350/307 /RF7/. Inventory is updated daily.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.Just bougt a fixed up 350 with casting nr 3970010 with 4 bolt mains, is this a LM1 or something else, Mikes page says a LM1 with casting number 3970010 os only a 2 …The 010 block casting was a VERY common 4in bore block. It was MACHINED in both 2 and 4bolt configurations. The width of the registers (that's the gap in the main web where the caps fit), FOR A SB, is what determines 2 or 4bolt configuration. AND, ONLY the center 3 webs got 4bolt caps in in the SB. ANY (NOT just an 010) 4in …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.What year and model is a 350 Chevy engine with casting no 3970010 and V0609CNN? 1996. What year is a 350 Chevy engine with casting number 3970010 and V0725ckl on front of the block?

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The 3970010 casting was introduced by GM in 1969 and was used through 1975. It was produced in both 2-bolt and 4-bolt main configuration and these applications varied greatly from year to year. In the 1969 model year, Chevrolet documentation shows the block only being used in the 4-bolt main configuration. This block saw extensive truck …Please tell me what I have. Block is a 3970010 , opposite side of block is stamped G17. Has what I assume is an original 2 barrel intake. Block deck has the following codes: V0328CHK. 18c122629. It's supposed to be a 1971 350 SBC...that's not washing out after looking at these numbers. Thanks!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. ... 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 ...1969 396 casting date C 14 9 for March 14, 1969 - note this casting date is on the rear of the engine block next to the bellhousing. 1970 396 casting date B 6 70 for February 6, 1970. Note 1970 has a 2-digit year code. …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, …Apr 11, 2008 · For this block, it would be the '69 only. If "original" heads '69 302 heads 3947041 but, also used on the '69 350. 3970010 was a common block used from '69 to '80 on the 350. Your best bet, quickest way to find out, research the block date code and engine id# on block, if not decked. I have two of these blocks 3970010 4bm myself. 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.SBC 350 V8 ENGINE MOTOR BLOCK 3970010 2 BOLT MAIN SMALL BLOCK CHEVY 30 OVER. Pre-Owned. 1 product rating. $749.99. camaro-parts-world (26,333) 99.9%. Was: $999.99 25% off. or Best Offer. Freight. SBC 350 V8 ENGINE MOTOR BLOCK 3970010 4 BOLT MAIN MJ21800 MADE IN MEXICO GM 2. ….

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 ...The #3970010 casting block is the most common four-inch bore block ever made. It comes from a 350 and likely has a forged steel crank, but the heads are terrible for performance improvements. The design uses 1.72-inch intake valves, measuring out to around 8.2:1 when appropriately installed.A popular car modification is the stereo system. Replacing the stereo enables the car owner to add an aftermarket stereo with a number of features such as MP3 players, Bluetooth co...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 ...Chevy small block casting number cross reference ... 3956618, 3970010*, 3932386: 350: 1968-79: Truck and high-performance applications (4-bolt mains)Very common 350 Chevrolet, high nickel content block, 4 bolt mains, used in high performance as well as trucks for several years. It was available from 1969 as a 350 but also used as a 302 in that year. ... Keep in mind that you should never assume that a 3970010 block is a "4-bolt main" block without removing the oil pan. The castings are the ...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.Decoding small block Chevy engine suffix codes and stamped numbers: CE - CMJ. nastyz28.com Looks like this: Hope this helps ~Andy ~Andy METHTRAPNOVA Build Thread ... 3970010 is a 350 from 69-74. Are there any other numbers and letters in the front pad? From what you've provided, this is what I came up with but others may have a … Loaded in 1 ms.. There are 2,506 casting numbers in the database.2,506 casting numbers in the database. Chevy 3970010, The #3970010 casting block is the most common four-inch bore block ever made. It comes from a 350 and likely has a forged steel crank, but the heads are terrible for performance improvements. The design uses 1.72-inch intake valves, measuring out to around 8.2:1 when appropriately installed. , item 2 1974 Small Block Chevy 350 SBC 3970010 E 10 4 010 4 Bolt Main STD 1974 Small Block Chevy 350 SBC 3970010 E 10 4 010 4 Bolt Main STD. $600.00 +$275.00 shipping. item 3 Free Shipping - GM Chevy 5.7 350 Short Block 1967-1979 3970010 w/ free hat!, Product Summary. 350. Complete rebuild assembly kit for 1969-Up Small Block Chevy Engines. New high tech, internal balanced, fatigue resistant 80-60-06 cast steel crank with near forged endurance. These 5140 forged steel claimer I-beam connecting rods - Press fit style wrist pin bore. Keith Black economy pistons feature coated skirts, wrist pin ..., GM may be replacing tens of thousands of Bolt EV batteries, but it won’t have to pick up the tab for most of them. The automaker has reached a deal that will have LG pay nearly all..., 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 …, Chevy Small Block Engine Casting Codes. 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. Choose Group to View Engine Block Codes., 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 ..., 1265 posts · Joined 2016. #4 · Apr 21, 2022. 350 truck motor – 4 bolt main VO217WK used in C10 to C35 trucks and industrial equipment came out of a MF combine. Built in Towanda, MI. Block 3956618 date B129 (Feb 12, 1969) Also used in 1969 302, 327, and 350. Heads 3927186 date: G318 (July 31, 1968) 64 cc, used on 69 302 SAVE FOR …, Aug 23, 2008 · Engine casting # 3970010--how to find the year. Thanks to some GREAT help, I found my engine casting number. By looking on the web pages some of you guys suggested, that number was used on 350's from '69 to '80 (also on '69 302's and '69 327's), both 2 and 4 bolt. , 17889 posts · Joined 2005. #2 · Aug 1, 2009. 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., 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 ..., Small block Chevy 4 bolt main 010 engine block. Has been cleaned and checked. Has new ARP main bolts with it. TFS stamped should be originally out of 79-82 truck or van. ... Chevy 3970010 Small Block 350 Engine Bare Block 4 Bolt ARP Main Bolts Standard. TG Motorsports net (18346) 78.9% positive; Seller's other items Seller's other items;, Apr 11, 2008 · For this block, it would be the '69 only. If "original" heads '69 302 heads 3947041 but, also used on the '69 350. 3970010 was a common block used from '69 to '80 on the 350. Your best bet, quickest way to find out, research the block date code and engine id# on block, if not decked. I have two of these blocks 3970010 4bm myself. , 3970010 Small Block V8 1969 302, 4 bolt, Camaro Z28. God-Bless! Helpful 0 ; Not Helpful; ... Chevy used that from 1969-1979. The Vette, Camaro, Chevelle, Nova, Monte Carlo and Trucks all had this engine. If it's a 4 bolt main, the chances it came out of a Vette are very good. The engine number you give does not cross reference., YEARS : CASTING : CID: LOW POWER: HIGH POWER : MAIN CAPS: COMMENTS: 1980-85 : 140029 : 350--2: car: 1973-80 : 330817 : 400--2: car, truck: 1975 : 355909 : 262-- 2 ..., Casting Number 3970010 Manufacturer Chevrolet Category Engine Blocks Type Small Block V8 Date 1969-1980 Notes 350, 2 bolt or 4 bolt . 75 Nova Custom 75 Nova Base. ... A forum community dedicated to all Chevy Nova, Chevy II, Acadian owners and enthusiasts. Come join the discussion about performance, modifications, classifieds, …, KARISH Discussion starter. 4 posts · Joined 2011. #1 · Aug 28, 2011 (Edited by Moderator) HI, GUYS I RECENTLY BOUGHT A CHEVY 350 cu in WITH BLOCK CASTING#14010207 I DID SOME RESEARCH AND CAME UP WITH THE FOLLOWING: IT'S A 4BOLT MAIN. L82 SERIES 350 cu in. USED FROM 1970-1972., Sep 1, 2017 ... ... Chevy small block I need. normally if it is ... 3970010 is possibly the actual number: Which ... Chevy engine · 1999 Chevrolet K1500 · BMW X5 Tran..., So; my 71 C10 had the original 307 swapped out by the previous owner. He disclosed that it was a freshened up 305 believed to be from an ‘82 Camaro. However; it has the 3970010 casting number on the rear of the block. Engine suffix code stamped on the pad behind the alternator says C2R, which comes up as an ‘82 4bbl 305 with a whopping 155hp., Aug 26, 2021 · On a small block Chevrolet, the casting number is found at the rear of the block on the driver's side (as is with Chevy's big block engines). The engine ID code stamping is located on a flat pad in front of the passenger side cylinder head (big blocks can be in the same location or above the timing chain cover, with inline-sixes stamped on the passenger side of the block behind the distributor). , 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 ..., 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 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 take it out of?, 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. 14015445 - This is another small block V8 engine that was produced from 1975 to …, from Sierra Vista AZ. mortec will tell you it's a 1969-79 350 or a 69 302, based on the casting number. not much help, really. squirrel, Apr 6, 2006. SHARE POST #8., The block is a 3970010 350 and I will go from there. When i dissassembled the engine I found that the engine had been rebuild already with very low miles on it. The inside is a clean as if I just built it, there is NO top edge on the cylinders and the bearings look great. The pistons look like new except for the carbon on top and are stamped .040., 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., May 1, 2008 · I have a chevy 350 engine with Casting No. 3970010. I was told to get the numbers from the flat panel on the "passenger" side and I did. They are TYF705125 and V1015TMM. , The #3970010 casting block is the most common four-inch bore block ever made. It comes from a 350 and likely has a forged steel crank, but the heads are terrible for performance improvements. The design uses 1.72-inch intake valves, measuring out to around 8.2:1 when appropriately installed., 1 post · Joined 2011. #1 · Jul 9, 2011. I want to ID my small block Chevy engine. The numbers I have include: (a)the casting number is 3970010, (b) there are two serial numbers on the front passengers side of the engine, these numbers are V0505TDR and C8F454789. I would really like to know cubic inches, horsepower and 4 bolt main or 2., These two numbers are the casting number and engine ID code. As the name infers, the casting number is cast into the block when the block itself is cast. This casting number will denote engine displacement, 2 or 4 bolt main caps, application year or year range, and often any specific application notes. These casting numbers are well …, 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., Oct 14, 2015 · 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 digit VIN code ...