Chevy 3970010

1955 Chevrolet Bel Air Unrestored 15,000 Mile Survivor 1955 Chevrolet Nomad 1964 Malibu SS Unrestored 36,000 Mile Survivor ~ SOLD ... 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 …

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). …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.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 …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.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! Chevy Casting Number identification including Block casting numbers, cylinder head casting numbers, Crankshaft and intake casting numbers. ... 3970010. 69-79. 302/350 ... 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*.

If you’re in the market for a new or used Chevrolet vehicle, it’s important to find a reputable dealership near you. With so many options available, it can be overwhelming to choos...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. 11 watchers. 1970 - 1972 LT1 Replacement Engine (4bolt 3970010 Block, Hump Heads, TRW Domes) Remanufactured. $8,995.00. custom_engine_supply (1,507) 100%. or Best Offer. +$395.00 shipping. 40 watchers. SBC 350 V8 ENGINE BLOCK 3970010 4 BOLT MAIN SMALL BLOCK CHEVY FOR PARTS.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 ...Updated: 9/19/2023. Wiki User. ∙ 13y ago. Best Answer. 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 ...item 5 GMC 3970010 CHEVROLET 350 4 BOLT MAIN BARE BLOCK W/ END CAPS .30 OVER OEM 1975 GMC 3970010 CHEVROLET 350 4 BOLT MAIN BARE BLOCK W/ END CAPS .30 OVER OEM 1975. $800.00. item 6 Brand New Replacement Main Caps (4-bolt conversion) for Chevy GM 350 (Set of 3) ...

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.7034 posts · Joined 2011. #8 · Jul 10, 2019. 3970010 = 68-80 350 2 or 4 bolt main 4 inch bore. J67= October 6 1967, or 1977. This block was not cast in 67, so that leaves 77. If it says hecho in mexico on the block, I think it was above the pad location, it is a target 350 or crate engine built in Mexico.Loads of 2 bolt small blocks were raced all through the 60s. The dz 302's although rated at something like 290 hp actually ran over 400 hp. I beleive they were 2 bolt in 67 and 68. The ticket is in using the right parts (like a forged crank and rods) and a meticulously ballanced bottom end.Sep 19, 2023 · Updated: 9/19/2023. Wiki User. ∙ 13y ago. Best Answer. 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 ... 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 …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 ...

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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.882 casting heads are 76cc castings. a 3970010 block is a 4" bore block. You have a 350 there. A 305 of that vintage would have 450 casting heads and a 460776, 777, or 778 block. I just scrapped one that was in a 79 Camaro. I have never seen a 3970010 casting block that was anything else that a 4" bore medium journal block.The 3970010 engine block casting number does not mean 350. It could be a 327, 307 or 350, 2 or 4 bolt main from 1968 thru 1978. All it can tell you for sure is that the block is a 4 inch bore. However, if you are a betting man, you would most likely win guessing 350 because it is the most common casting number for 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. Pics are of actual item. ... Chevy 3970010 Small Block 350 Engine Bare Block 4 Bolt ARP Main Bolts - $1,000 (Mims) 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 ...

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?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 … 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! $4,890.00 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.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.010 as a casting number i.e. 3970010 is found both on the outside left rear of the bell housing boss as the complete casting number and as the number "010" cast into the right side of the block ahead of the starter location. Casting number 3970010 is a very desireable block it is a 4 inch bore used for late 327s, Z28 302s, and heavy duty 350s ...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. Small Block Chevy Casting Numbers. Small block casting date is located on driver side rear of block on flange forward of bellhousing. Big block on the right side of engine above the oil pan rails. Casting Date Example: E038 – (E = Month, 03 = Day, 8 = Last digit of model year (1978)). Month: A = Jan, B = Feb, C = Mar, D = Apr, E = May, F ... 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 was wondering about ...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 …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.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?

How To Determine Whether Your Small-Block Chevy is a Builder or a Boat Anchor. By Tommy Lee Byrd – Photography by the Author. ... Common casting numbers for performance engines include 3970010, but ours reads 3956618, another great number to put in your memory bank. This means the engine could be a ’69 DZ302, a ’68-69 327, or …

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 …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.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.Small Block Chevrolet. LB=Long Block ... 70 0-B-24 3970010 350 2 SB KO304CNV, canadian 70 D-2-0 3970010 350 2 BB VO406CNN ... Chevy Small Block Engine Casting Codes. First Generation Pictures; ... Passenger/Chevelle/Chevy II/Corvette/Camaro : 3970010 : 1970-80 : 350 : 145-350 The casting number is 3970010. And on the machined pad in front of the passenger side cylinder head has these stamped onto the pad - 14W200 and a larger stamped ID V 2 on the pad. ... Engine Identification in my 55 chevy Today, I pulled off the headers off the engine and I measured the stroke with a pipe cleaner. I did this several time to ...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. Pics are of actual item. ... Chevy 3970010 Small Block 350 Engine Bare Block 4 Bolt ARP Main Bolts - $1,000 (Mims)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.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 ...

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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 ... Oct 1, 2011 · 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. The forthcoming Chevy Bolt and expected improvements in the Nissan Leaf will provide electric car owners with greatly increased driving range at affordable prices. By clicking "TRY...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 …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.It definately has the 3970010 code at the back of the block on the drivers side. '72 sounds much better than '80! Also, ... BLOCK WAS REMOVED FROM A LOW MILEAGE 1973 CHEVY TRUCK." View attachment 29309 . Save Share. Like. This is an older thread, you may not receive a response, and could be reviving an old thread. …If you’re in the market for a new or used Chevrolet vehicle, it’s important to find a reputable dealership near you. With so many options available, it can be overwhelming to choos...Block Casting Number = 3970010; 1969-1979, 302/350 cid, car & Truck, 2 & 4-Bolt Mains, 4 Bolt Most common. This covers a huge array of engines. An interesting thing happened in Chevy plants sometime during the 1971 model year production; early in 1970, Congress past a law requiring all U.S. auto manufacturers to standardize the Partial …I just pulled this SBC from a 34 Vicky and this is the number on the back of the block 3970010. What I can determine is a 2 or 4-bolt main. How else can I tell without pulling the pan? Is this an engine worth …Re: how much can a 3970010 block handle, it has the 010 high nickel casting. From what I've been able to gather a factory block is usually safe (with good prep, splayed 4 bolt caps, etc) to 600 horse. Have heard of a few that have gone to 700 or more, but it starts getting risky IMO over 600. Somewhere above 600 the factory blocks can split and ...Block Casting Number = 3970010; 1969-1979, 302/350 cid, car & Truck, 2 & 4-Bolt Mains, 4 Bolt Most common. This covers a huge array of engines. An interesting thing happened in Chevy plants sometime during the 1971 model year production; early in 1970, Congress past a law requiring all U.S. auto manufacturers to standardize the Partial …7034 posts · Joined 2011. #8 · Jul 10, 2019. 3970010 = 68-80 350 2 or 4 bolt main 4 inch bore. J67= October 6 1967, or 1977. This block was not cast in 67, so that leaves 77. If it says hecho in mexico on the block, I think it was above the pad location, it is a target 350 or crate engine built in Mexico. ….

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 known and ...For sale!! 70s Chevy small block aluminum heads, roller rockers, ARP fasteners, performer intake, .040 bore.. crane cam.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...Chevy small block casting number cross reference ... 3956618, 3970010*, 3932386: 350: 1968-79: Truck and high-performance applications (4-bolt mains)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!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 …3970010 Detail - Casting Numbers .info: engine blocks, heads, and more. Loaded in 1 ms. There are 2,506 casting numbers in the database.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. Chevy 3970010, 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 ..., 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 ..., 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., 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., Oct 6, 2010 · The block number - in this case 3970010 - is not the same as the block alloy casting codes (010, 020) that show alloy content and are cast inside the timing cover area on the front of the block. That's correct,and you may need to pull the cam gear to see it.It's the nickel and tin content in the block. , Nov 22, 2004 · My 3970010 350 block is a 10 and I'm sure it'll wear just fine as most blocks of that era were 10's. '72 GMC SWB C1500 Custom, frame-off in progress. 383 SBC, 9:1CR, Comp Cams XE262H, Scat internal balanced crank, Eagle SIR 6" rods, Keith Black dish pistons, Dart Iron Eagle 72/180 heads, Weiand Stealth intake, Stewart stage I water pump, Holley ... , 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 …, Get ratings and reviews for the top 7 home warranty companies in Chevy Chase, MD. Helping you find the best home warranty companies for the job. Expert Advice On Improving Your Hom..., Aug 5, 2015 · 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 ... , 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! $4,890.00, 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. , 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., Details for 3970010. Manufacturer. Chevrolet. Category. Engine Blocks. Type. Small Block V8. Date. 1969-1980. , 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 …, 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..., The great American sports car is going electric. GM shared the news this morning, and released the first images of the upcoming electric Chevrolet Corvette. The great American spor..., 3970010 is a 4.0" bore block, used to make 350's mostly (1968-1979), two years (1968-69) of large journal 327's and one year(1969) of 302's. The "high nickel block" thing is an car magazine/internet myth that just won't die, one of our members here and on other forums who worked for the GM casting plant in Flint, Michigan back in those days explained it all, the "010" and "020" cast numbers ..., 1955 Chevrolet Bel Air Unrestored 15,000 Mile Survivor 1955 Chevrolet Nomad 1964 Malibu SS Unrestored 36,000 Mile Survivor ~ SOLD ... 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 …, 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., The other numbers were the distributor # 1111480 and the (3) possible engine casting #'s 3932386, 3956618, and 3970010. The only other number I can think of would be the V----DZ number at the front of the engine. Thanks again for the reply. 1969 Z28, Fathom Green, DZ302, M20, 3:73, PS, TW ... C - Chevrolet Truck Division 8 - …, Small Block Chevrolet. LB=Long Block ... 70 0-B-24 3970010 350 2 SB KO304CNV, canadian 70 D-2-0 3970010 350 2 BB VO406CNN ..., Jan 22, 2007 · 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. The pad is smooth so theres no engine codes. Its cast GM 41 by the 3970010. , About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright ..., 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..., 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)., Chevy small block casting number cross reference ... 3956618, 3970010*, 3932386: 350: 1968-79: Truck and high-performance applications (4-bolt mains), Use these numbers to identify your stock Chevy intake. Chevy Casting Number identification including Block casting numbers, cylinder head casting numbers, …, 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., Chevy Casting Number identification including Block casting numbers, cylinder head casting numbers, Crankshaft and intake casting numbers. ... 3970010. 69-79. 302/350 ..., Loaded in 1 ms.. There are 2,506 casting numbers in the database.2,506 casting numbers in the database., 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., 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 bore block could be ..., 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...