3970010 chevy block - Order Status. 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 stamp code V0527DZ (May 27). Cylinder heads casting # 3927186 …

 
Small Block Chevy BLOCK # 3970010 Engine Block Casting Numbers This is probably the most common 4" bore SBC Block cast. It has been used in many different applications. Only way I know to be sure of 2 or 4 bolt mains is to pull pan.SBC BLOCK # 3970010 Engine Block Casting Numbers This is probably the most common 4" bore SBC Block …. Remnant 2 emote button

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 …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 ...Thats a common high nickel block.Should have an 010 under the timing cover.Good block a 2bolt one of these is better than a 4 bolt newer block were they skimpt on materials. The heads are good factory heads for mild performance if you can redo them with just guides and a valve job go for it if they need seats etc...look for something better.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, …Car shoppers, take note: The Chevy Volt has received a $4,400 price cut amid low sales and a new model. By clicking "TRY IT", I agree to receive newsletters and promotions from Mon...Details for 3970010; Manufacturer: Chevrolet: Category: Engine Blocks: Type: Small Block V8: Date: 1969-1980: Notes: 350, 2 bolt or 4 bolt, may be mistaken as 8970010: Added to DB: December 20, 2010 (4879 days ago) Loaded in 1 ms. There are ...This 69 350 block has casting number 3970010 with an E (May) 2 1969 casting date. All cylinders are standard bore. The block was originally installed in a big 1969 Chevrolet truck. The suffix code stamped on the deck pad is WM. No V.I.N. stamping anywhere on the block.[ http://www.castingnumbers.info/site/search/3970010 ] Showing 2 results on 1 page. 3970010. Manufacturer: Chevrolet Category: Engine Blocks Type: Small Block V8 Date ...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 8.1-8.2:1.3970010 - 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, …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 Select Block Casting Group ALL Block Codes 262, 265, 267 302, 305 or 307 327 350 400General Motors said it has secured more than 110,000 reservations for its new all-electric Chevrolet Silverado, which includes reservations from more than 240 fleet operators, Chai...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.General Motors said it has secured more than 110,000 reservations for its new all-electric Chevrolet Silverado, which includes reservations from more than 240 fleet operators, Chai...The Chevy big/small-block engine VIN (vehicle identification number) is a combination of digits that indicate the type of vehicle the engine is installed in, the model year, and the assembly plant. The engine VIN also contains six digits that are used to denote the last six digits of the vehicle’s VIN. The engine’s VIN is important to some ...OEM SBC HP Rating 3970010. I have a high nickel 010 block casting number 3970010, that is at the machine shop right now. It's a 4 bolt block NOT splayed, with stock caps. I hear they are good for about 850 hp at the crank and the main webbing is critical after that. I am putting a callies compstar crank and rods in it with JE slugs.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! $4,890.00The ignition firing order for a 454ci Chevrolet is 1, 8, 4, 3, 6, 5, 7, 2. From the front of the engine, the odd cylinders are on the right side, with cylinder 1 being the closest....hello my old man has this small block chevy engine that im trying to find out what it is. the casting # is 3970010 (3970010 302/350 69-79 ...Small Block Chevy BLOCK # 3970010 Engine Block Casting Numbers This is probably the most common 4" bore SBC Block cast. It has been used in many different applications. Only way I know to be sure of 2 or 4 bolt mains is to pull pan.SBC BLOCK # 3970010 Engine Block Casting Numbers This is probably the most common 4" bore SBC Block cast. It has ...Engine Casting Block #3970010 - Chevy Message Forum - Restoration and Repair Help. Chevy Forums FREE technical assistance for your restoration and repair. …Chevy 350 Details about GM 3970010 Small Block Chevy 350 Bare Block 4 Bolt 4.030 Bore I-20-6 Date. Where is the serial number on an engine block? The engine serial number is on a metal plate attached to the block, typically found on the left-hand side of the engine.Casey, One: the 3970010 is a medium journal main diameter block, the 1967 and earlier small blocks were small journal. Your hopes of it being a 65 Vette motor are for naught. 3970010 could NOT possibly have been in a production era that was small journal only.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 goal is to convert this block into a 383.Jan 3, 2022 · 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 block from 1969 through 1979 as both 2-bolt blocks and 4-bolt blocks in Chevy cars, trucks, and Vette. It was used in horsepower applications from 185 through 370. THE BLOCK ID # IS 3970010 WHICH IS A 350 USED FROM 1969-1980 ACCORDING TO MY BOOKS "chevy small block interchange manual" and "chevy small block parts interchange manual". THE # ON THE HEADS IS 462624 USED ON 350 FROM 1975-1986 FROM SAME BOOKS. THE HARMONIC BALANCER ON THE OTHER …OEM SBC HP Rating 3970010. I have a high nickel 010 block casting number 3970010, that is at the machine shop right now. It's a 4 bolt block NOT splayed, with stock caps. I hear they are good for about 850 hp at the crank and the main webbing is critical after that. I am putting a callies compstar crank and rods in it with JE slugs.Aug 3, 2008 · 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." THE BLOCK ID # IS 3970010 WHICH IS A 350 USED FROM 1969-1980 ACCORDING TO MY BOOKS "chevy small block interchange manual" and "chevy small block parts interchange manual". THE # ON THE HEADS IS 462624 USED ON 350 FROM 1975-1986 FROM SAME BOOKS. THE HARMONIC BALANCER ON THE OTHER …Nov 8, 2019 ... Chevy 1973 350 #3970010 block bored . 060 over with standard stock (N) crank polished, 4130 H beam rods, Flat top Hypertech two valve ...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 ...Mar 15, 2006 · Harmonic Balancer. HI GUYS, I'M JUST GOING THROUGH AN ENGINE THAT I PICKED UP A WHILE BACK. THE BLOCK ID # IS 3970010 WHICH IS A 350 USED FROM 1969-1980 ACCORDING TO MY BOOKS "chevy small block interchange manual" and "chevy small block parts interchange manual". THE # ON THE HEADS IS 462624 USED ON 350 FROM 1975-1986 FROM SAME BOOKS. General Motors said it has secured more than 110,000 reservations for its new all-electric Chevrolet Silverado, which includes reservations from more than 240 fleet operators, Chai...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.3970010 sbc id. I found a block and cant fint proper info on it. 3970010 on back of block. Pad in front of passenger side head. has B&B on way left side and 1022 on far right side. Front and rear mains are 2 bolt, rest are 4 bolt. By oil filter it has 010 then 020 then 167, under timing chain cover. is 010 then 509 then 020 with other #s ...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. Any help appreciated. …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 …Feb 20, 2015 ... Very nice running 350 removed from a 1975 Corvette. The mileage is unknown but it runs very strong with no weird noises, knocks, or smoking.Sep 19, 2013 · Chevy’s First-Generation Small-Block V8 Casting Numbers. 10036033 Small Block V8 350, 4-bolt, Goodwrench crate engine, 2-piece rear seal. 10051182 Small Block V8 2 bolt, Bow Tie block, 3.75-4.30 bore, 1-piece rear seal. 10051184 Small Block V8 4 bolt, Bow Tie, 4.00-4.160 bore, 1-piece rear seal. Restore60s said: Original starter number for your block is #119497. Thats a Delco part #. Walked out to the shop & wrote the number down.---:thumbup: Kind of a broad statement. 4 starters for any given chevy small block. 153 tooth flexplate. 168 tooth flexplate. 153 tooth flywheel.Same engine the stamp number passenger side front behind alternator on the block is T51509012 Any help would be appreciated . Reactions: crunchyg. TXK20 New Member. Joined Jan 3, 2015 Messages 10 Karma 1 Location Dallas, TX Car '82 Chevy K20 Jan 3, 2015 #2 Casting No. 3970010 = '69 327 from Camaro, '69 327 from trucks and …Small Block Chevy BLOCK # 3970010 Engine Block Casting Numbers This is probably the most common 4" bore SBC Block cast. It has been used in many different applications. Only way I know to be sure of 2 or 4 bolt mains is to pull pan.SBC BLOCK # 3970010 Engine Block Casting Numbers This is probably the most common 4" bore SBC Block cast. It has ...A Chevy 350 small block engine running in an engine stand.Engine ran 4500km after rebuild.Setup:Carter AFB carburetorEdelbrock intakeHooker headersFlowmaster...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 Location Lawrenceville, GA. ... Could be one of the following, all listed as 3970010 69 302 4 bolt main from a camero 69 327 truck and commercial 69-80 350 2 or …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 ...Chevrolet Engine Block Numbers. All engines are stamped with an engine ID code, consisting of assembly plant code, production date and suffix code. ... Bolt-In 9-Inch Rear End Swap for 1988-98 Chevy Trucks Builds and Examples [ February 15, 2024 ] Making A Checkered Flag Shift Knob Builds and Examples ... 3970010: 350: 2-Bolt or 4 …Loaded in 1 ms.. There are 2,506 casting numbers in the database.2,506 casting numbers in the database.SBC 350 Bare Engine Block Casting # 3970010 4 Bolt Main Machined and Painted. stoversps. (174) 100% positive. Seller's other items. Contact seller. US $1,250.00. No Interest if paid in full in 6 mo on $99+ with PayPal Credit*.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.3914678 is the casting number for a 68 MO block and is a 2 bolt block. 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 …Apr 27, 2006 · Re: how much can a 3970010 block handle, it has the 010 high nickel casting I copied this info from a post at HOT ROD, earlier this year. It said that the figures were aquired from SUPER CHEVY, POP HOTRODDING, and some local shops. None completely agreed, so lower values were used and rounded down. 2-bolt w/ OE main bolts = 400hp 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.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 ...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 ...3970010 block question. I purchased a 67 with an unknown 350 with the 010 block and the last three letters on the block pad are TMM--I have another 010 block with the same pad letters TMM that I know is a 4 bolt main it also has the casting K9 next to the block numbers on the rear--I was told this is a better block casting because of the …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 Cheverolet 283 small-block engine was first produced in 1957, generating between 185 and 283 HP, and maxed out at 315 HP in 1961. This engine became famous as the basis for lar...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.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.It is a 3970010 four bolt block which sounds like it was produced from 69-79. It appears to be a higher nickel block as it has the 010 casted behind the timing chain cover and the back of the block above the crankshaft flywheel flange. Be nice to know what year it was casted. I have 3 E 17 on the right side between the frost plugs.The Chevy big/small-block engine VIN (vehicle identification number) is a combination of digits that indicate the type of vehicle the engine is installed in, the model year, and the assembly plant. The engine VIN also contains six digits that are used to denote the last six digits of the vehicle’s VIN. The engine’s VIN is important to some ...Sep 10, 2016 · 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. 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.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.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.69 CHEVY DZ 302 Z28 ENGINE BLOCK 3970010 E229 CAMARO 4 BOLT MAIN STD BORE MAGGED. Opens in a new window or tab. Pre-Owned. $3,500.00. classicjunkyard (15,985) 100%.1 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.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.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.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. ... This photo is also of a 3970010 block, cast in 1969, that does NOT have the 010/020 cast under the timing chain cover. This is the cylinder block in ...3970010 block question. I purchased a 67 with an unknown 350 with the 010 block and the last three letters on the block pad are TMM--I have another 010 block with the same pad letters TMM that I know is a 4 bolt main it also has the casting K9 next to the block numbers on the rear--I was told this is a better block casting because of the …Chevy Small Block Engine Casting Codes. First Generation Pictures; ... Passenger/Chevelle/Chevy II/Corvette/Camaro : 3970010 : 1970-80 : 350 : 145-350Small 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 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.The first step to decoding the Chevy engine block code is to locate and identify the code on the engine assembly stamp correctly. Next understand the block code. The code has 15 ch...See full list on chevygeek.com 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.Until you take the pan off, don't assume its a 4 bolt just because of the casting number... been burned by that issue myself. Got a 77 3/4 ton van... was original, and a 3970010. Got it home, cut the van apart around it, put it on the stand. Started to disassemble it for the rebuild and found it was a 2 bolt. So I forked out a lil extra and put ...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 ...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.Thats a common high nickel block.Should have an 010 under the timing cover.Good block a 2bolt one of these is better than a 4 bolt newer block were they skimpt on materials. The heads are good factory heads for mild performance if you can redo them with just guides and a valve job go for it if they need seats etc...look for something better.Chevy Casting Number identification including Block casting numbers, cylinder head casting numbers, Crankshaft and intake casting numbers. Search your casting number. Chevy Block Casting Numbers. Use these casting numbers to identify the block you have. ... 3970010. 69-79. 302/350. car & Truck 2 & 4-Bolt Most common. 3970014. 68-79. 350. …

Small Block Chevy BLOCK # 3970010 Engine Block Casting Numbers This is probably the most common 4" bore SBC Block cast. It has been used in many different applications. Only way I know to be sure of 2 or 4 bolt mains is to pull pan.SBC BLOCK # 3970010 Engine Block Casting Numbers This is probably the most common 4" bore SBC Block cast. It has .... Blizzard of 1978 snowfall totals

3970010 chevy block

A user asks if SBC #3970010 is a good block for rebuilding and gets various replies from other users. The block is a 2 or 4 bolt main cast in Mexico and used in different models and years of Chevy cars …Chevy 350 Details about GM 3970010 Small Block Chevy 350 Bare Block 4 Bolt 4.030 Bore I-20-6 Date. Where is the serial number on an engine block? The engine serial number is on a metal plate attached to the block, typically found on the left-hand side of the engine.C3 Tech/Performance - 1970 LT1 engine number - My 350 engine has an engine number starting with CEC. The 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. What does...Restore60s said: Original starter number for your block is #119497. Thats a Delco part #. Walked out to the shop & wrote the number down.---:thumbup: Kind of a broad statement. 4 starters for any given chevy small block. 153 tooth flexplate. 168 tooth flexplate. 153 tooth flywheel.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 number ...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 ...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. Attachments. 3970010 2 bolt …Apr 27, 2006 · Re: how much can a 3970010 block handle, it has the 010 high nickel casting I copied this info from a post at HOT ROD, earlier this year. It said that the figures were aquired from SUPER CHEVY, POP HOTRODDING, and some local shops. None completely agreed, so lower values were used and rounded down. 2-bolt w/ OE main bolts = 400hp 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 was wondering about how much horsepower a block like this can handle and is the 020 anything special I've seen 010 …The Chevy 6.0 liter small block engine is an eight-cylinder engine aligned in the V formation and is called the Vortec L96. As of 2015, it is used primarily in Chevy’s heavy-duty t...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 block from 1969 through 1979 as both 2-bolt blocks and 4-bolt blocks in Chevy cars, trucks, and Vette. It was used in horsepower applications from 185 through 370.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..

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