3970010 chevy block - Yes, 3970010 is the Z-28 302. Also used in 350 applications for the Corvette, camaro, Chevt II, Chevelle and passenger. It was also used as a truck block. So yes, the Block number itself does not make it a Z-28. And as mentioned, the VIN Suffix is what makes it so. The vin stamp will use the Suffix DZ and only DZ.

 
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 .... Baldi's basic wiki

If this listing is still up it's still available!! Chevy stock 350 small block 4 bolt main. Was rebuilt at one time yhen pulled for different engine. Has been sitting in garage since 2004. Was running when pulled. Comes with felpro complete gasket set and the original 2 barrel intake and carburetor and headers. Serious Inquires ONLY1974 Small Block Chevy 350 SBC 3970010 E 10 4 010 4 Bolt Main STD. Opens in a new window or tab. Pre-Owned. $600.00. 702jimmy1967 (396) 100%. or Best Offer +$275.00 shipping. Fits Chevrolet Performance 19432109 350/383 4-Bolt Fits Chevy Engine Block. Opens in a new window or tab.Cylinder Heads- part # 14034808 casting #33417369. 1.94" Intake valve , 1.50" Exhaust Valve 76cc Combustion Chamber. 7 Bolt style Exhaust Flange Standard 85' and prior intake manifold bolt pattern. Perimeter bolt style Valve Covers. This head is very similar to the old #882 castings from the 1970's.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.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 400Am trying to get info on my small block chevy. Casting number is 3970010. Stamped numbers are V0205ZAH and 19S423482. Near as l can find out through the internet l have an engine manufactured in 1979 to be installed in a 1980 Vette. The internet only shows ZAD, then jumps to ZAK, NOTHING FOR ZAH.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...casting number 3970010 is a 350 block from 1969 - 1979 but in 1969 302 and 327 have the same casting # and im not to sure about the other # What year is a 350 Chevy engine with casting number ...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 …See full list on chevygeek.com 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 ...I just bought a chevy 350 as a builder. Complete long block for $100. Any way I got the motor out of a 1982 el camino. I don't think it was original, i.e. they only came with 305's that year, as far as I know. The casting number on the block is 3970010. From the stuff I read it could be a 1969 to 1979 350 2 or 4 bolt ( this one is a 2 bolt ). Sold · Chevy 350 small block engine #3970010. $320 $575. ... Chevy stock 350 small block 4 bolt main. Was rebuilt at one time yhen pulled for different engine. Has ... Find the casting number of your Chevy block and see the year, CID, and comments. The web page lists the casting numbers for small block Chevy engines from 302 to 454 …casting number 3970010 is a 350 block from 1969 - 1979 but in 1969 302 and 327 have the same casting # and im not to sure about the other # What year is a 350 Chevy engine with casting number ...Get ratings and reviews for the top 11 gutter guard companies in Chevy Chase, MD. Helping you find the best gutter guard companies for the job. Expert Advice On Improving Your Home...This is the cylinder block in the 57 wagon in my profile photo. I took the pictures during final assembly of the engine. It is important to note that this block is NOT a 4 bolt block. 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.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.#2. Gary S. Administrator. Lifetime Gold Member. Apr 14, 1999. 25,167. Bismarck, North Dakota. They are basically the same. Chevy made both castings and …A Chevy 350 small block engine running in an engine stand.Engine ran 4500km after rebuild.Setup:Carter AFB carburetorEdelbrock intakeHooker headersFlowmaster...I have the same casting 3970010. I think it is a 350, but it is in a 1978 Camaro LT that is supposed to have a 305. I tried looking up the number stamped on the pad by passenger side head under the alternator, but I can't find anything on it. The number appears to be V10191FJ. *Driver side exhaust manifold is 364747 GM.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 ...Big Block Chevy: Machined pad in front of the passenger side cylinder head or above timing chain cover. ... It can be done on any 3970010 (or other) block. 99% of the time, the casting # won't indicate anything. …Nov 1, 2013 ... If that happens to be the vehicle this engine is currently sitting in they "match". I'm Done. I can GUESS the casting # is 3970010 and check ...Small Block Chevy Suffix Codes: CE - CMJ. 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 ...GM/Chevy Small/Big-Block Engine Serial Number. A Chevy engine serial number is a unique ESN (electronic serial number) used to identify every Chevy vehicle. …SBC 350 Bare Engine Block Casting # 3970010 4 Bolt Main Machined and Painted. stoversps (174) 100% positive; Seller's other items Seller's other items; Contact seller; US $1,250.00. No Interest if paid in full in 6 mo on $99+ with PayPal Credit * …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 …Nov 16, 2006 · 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. Get ratings and reviews for the top 12 foundation companies in Chevy Chase, MD. Helping you find the best foundation companies for the job. Expert Advice On Improving Your Home All...Can’t find in list block casting number 3999289 from a 1974 chevy corvette. Code number T0319TRJ also has- HI PER cast in block. This is supposed to be the stock engine that came in the car.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.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. ... Used for some Chevy II CE replacement blocks: 3970010 : 69 : 302 : 4 : Z-28 Camaro : 3970010 : 69-80 : 327 : 2 : Trucks and industrial: 3970010 : 69-79 : 350 only : 2 or 4 : 3970014 : ...If you are looking for information on how to decode the suffix codes and stamped numbers on your small block Chevy engine, this webpage is for you. It covers the codes from TJT to TXB, and explains what they mean in terms of year, CID, application, VIN, HP, and more. You can also find links to other related webpages that cover … 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*. Learn about the history, features, and problems of SBC #3970010, a four-inch bore block used in many Chevy vehicles. Find out how to identify, repair, or replace this engine block if you need it.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...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 By The Numbers indicates the 3970010 block came into production in April or May, 1969, and was used through 1975. The E69 date is May 6, 1969. It was used for 350 applications in full size Chevrolet, Chevelle, Nova, Camaro (350 & 302) and Corvettes. It was also used in trucks. Hope this helps. Bob. 62 Acadian cvt sold. 63 …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.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...Fresh 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 27). Cylinder heads casting # 3927186 casting date E 27 9 (May 27, 1969). More pictures and details coming soon. This is a great complete engine. Real four bolt main, correct original ... 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. 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 Chevy 350 small block engine running in an engine stand.Engine ran 4500km after rebuild.Setup:Carter AFB carburetorEdelbrock intakeHooker headersFlowmaster...1974 Small Block Chevy 350 SBC 3970010 E 10 4 010 4 Bolt Main STD. Opens in a new window or tab. Pre-Owned. $600.00. 702jimmy1967 (396) 100%. or Best Offer +$275.00 shipping. Fits Chevrolet Performance 19432109 350/383 4-Bolt Fits Chevy Engine Block. Opens in a new window or tab.Apr 11, 2021 · 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. 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 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.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. 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 ... 3970010: 350: 69: Corvette: 4-bolt main, late 69: 3970010: 302: 69: Camaro: 4-bolt main, Z28, late 69: 3970010: 350: 69-79: Chevelle, Camaro, Nova, Monte Carlo, Pass., Truck: …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. 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. 1 product rating - SBC 350 V8 ENGINE BLOCK 3970010 4 BOLT MAIN SMALL BLOCK CHEVY FOR PARTS. $750.00. or Best Offer. Free local pickup. 26 watchers. carstarzautosalesllc (147) 100%. Chevrolet GMC Vortec 350 1 Piece Rear Main Seal 4 Bolt Main Caps w/Windage Tray. Opens in a new window or tab. Pre-Owned. $150.00.I have 2 questions about Chevy 350 blocks. I have been looking around and from what I have found is that the 010 020 block is a high nickel high tin block. ... 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 ...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 …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 ...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 ...Chevy Small Block Engine Casting Codes. First Generation Pictures; ... Passenger/Chevelle/Chevy II/Corvette/Camaro : 3970010 : 1970-80 : 350 : 145-3501 product rating - SBC 350 V8 ENGINE BLOCK 3970010 4 BOLT MAIN SMALL BLOCK CHEVY FOR PARTS. $750.00. or Best Offer. Free local pickup. 26 watchers. carstarzautosalesllc (147) 100%. Chevrolet GMC Vortec 350 1 Piece Rear Main Seal 4 Bolt Main Caps w/Windage Tray. Opens in a new window or tab. Pre-Owned. $150.00.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. 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 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. …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.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. casting number 3970010 is a 350 block from 1969 - 1979 but in 1969 302 and 327 have the same casting # and im not to sure about the other # What year is a 350 Chevy engine with casting number ... 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 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 and trucks.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 …item 7 1969-72 SBC Small Block Chevy 350 Long Block 3970010 J-25-1 Heads 3962441 B-18-9 1969-72 SBC Small Block Chevy 350 Long Block 3970010 J-25-1 Heads 3962441 B-18-9. $695.00. See all 11 - listings for this product. Ratings and Reviews. Learn more. Write a review. 4.2.3959512 Small Block V8 1962-1963 327, 2 bolt. 3970010 Small Block V8 1969 302, 4 bolt, Camaro Z28C3 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...Find the casting number of your Chevy block and see the year, CID, and comments. The web page lists the casting numbers for small block Chevy engines from 302 to 454 …Find the casting number of your Chevy block and see the year, CID, and comments. The web page lists the casting numbers for small block Chevy engines from 302 to 454 …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 …Find many great new & used options and get the best deals for 1976 SBC Small Block Chevy 350 2 Barrel Engine 3970010, 333882 Heads, 346260 at the best online prices at eBay! Free shipping for many products! ... Crate Engines for Chevy, Engine Block Parts for Ford F-350, 2 DIN Car Stereos & Head Units,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 2.1 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.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.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.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 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.

Re: how much can a 3970010 block handle, it has the 010 high nickel casting ive personally run dyno proven 976 hp on a factory 2 bolt block with aftermarket caps and a half fill .biggest problem was keeping head gaskets on, because everything moved so much at those power levels. also had some main cap walk .had to be very careful with tune up not to detonate it .. Dollar general des moines ia

3970010 chevy block

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.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.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 ...the year specific should be on bell housing flange at top of block behind distributor, will start with a letter ,a= january,b=feb etc,the second and third will be digets,the second ones are the day and third diget is the year so if the last diget is a6 it would be a 76 block..your engine is a 350 1969-1979 with 200,255,270,300,330,350,370 horse …The 2014 Chevy Equinox is a reliable and dependable SUV that has been a favorite among drivers for years. But how long can you expect it to last? Here, we’ll explore the expected l...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. 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*.Mar 22, 2005 · i was under the impression that this particular block casting 3970010 was some how stonger than other blocks high nickel or not. most of the casting number index sites show this number as "Heavy duty truck block hi perf ECT" they both came from circle track cars there must be some reason they were prefered not just for the nickel and tin content. am i incorrect. 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.Apr 11, 2021 · 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. 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.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. ... 4 Date code; 5 3970010 casting number. Chevy block casting numbers can usually be found on the rear of the block adjacent to where the block and ...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..

Popular Topics