3970010 gm

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. Parts Only.

Restored 55 chevy Belair Blown, Fuel Injected ... Casting number 3970010 cast date J231 - Cast on Oct 23rd 1971 12c138930 = is the partial VIN of the car it came out of, with the C indication Southgate Plant which built only Passenger (Impalas etc) cars. It was a 1972 Passenger Car and was the 38930th one made.Jul 29, 2010 · High nickel block.Stud the bottom end,square everything (machine work).I've used this very block in several drag motors.Making 580H.P right now with one thats 7 years going strong...600 H.P is what I'd rate it at pretty easy. (best block to use IMO for a drag app.) with less than 400 cubes. Reply. 07-30-2010, 09:33 AM. # 4.The antilock brake system (ABS) is controlled by its own computer. When it senses a problem, the ABS module on the dashboard will light up. When the problem is fixed, the module wi...Good short block prep with proper clearances (rod,main,rod side clearance piston gap etc). Vortec heads with a drop in spring kit or have the guides cut, .028" thick head gaskets and self aligning roller rockers. Retrofit hydro roller cam in the 220/ [email protected] range 500ish lift, RPM airgap intake, 1-5/8" headers, 600-650cfm carb, good quality ...Feb 10, 2023 · The cylinder head casting number and casting date code is visible with the valve cover off. The 3927186 casting number, often referred to as “186,” could have 1.94/1.50-inch valves or 2.02/1.60-inch valves, but we’re betting on the smaller combo, as this engine was 300 hp. The date code “B189” means February 18, 1969.The 3970010 block is a common 4.0" bore block that was available as a 2 or 4 bolt main. This block was used in many cars and trucks from the late 60's until the late 70's. It was the base for many HP GM engine offerings and is a good base for a mild performance build-up.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. For help go to engine Code help or engine decoding FAQ. Choose Group to View Small Block Engine Suffix Codes.

Any of the caps on a stock block other then the 2482 are just a std. grey cast iron cap. Now the 400 4 bolt center caps are nodular iron cap same material as the 2482 350 center caps. Hmm, so all of the 2 bolt caps are gray, as well as #1 and #5 on 4 bolt engines, 350 and 400]. Interesting.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 ...3970010 350 block is what I'd call the normal 350 4 bolt main block. GM used millions of these over the years. Some of them have 2 bolt caps installed. same block casting is used for both 2 and 4 bolt caps.Most will have 1 inch 20 Fuel inlet . 1975 and up quadrajets use a different metering rod . This carburetor has a part number of 17056228 and used on 77 BOP 75-77 Chev/GMC/Truck . Check here for specific Muscle car Info. Referenced by ; Rochester 17056228.General Motors (GM) is an iconic American automobile manufacturer that has left an indelible mark on the automotive industry. With a history spanning over a century, GM has consist...Welcher Motor ist das GM 3970010. Welcher Motor ist das GM 3970010 (15.06.2008, 16:13 ) oregano88. Weiß jemand bescheid? Was für ein Motor ist das? Motornummer 3970010. Ist das der originale L48 Motor meiner 1977 Corvette? (15.06.2008, 16:17 ) Porter. KLICK !, ..... (15.06.2008, 16:26 ) Wesch. Hallo Ist tatsächlich der einzige verbaute Block in 77 für …

The chance of it being a 302 is almost nil, and it being a 327 is almost as small. The 3970010 casting number was most commonly used to build 350s. Chances are probably 99.5% that its a 350. Also, he said he got it out of a truck so that eliminates the 302 and almost completely eliminates the 327. Dustinweaver, what year truck did you …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 usage ...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.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 ...

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Tags Chevy 350 Subjects. Animals & Plants Arts & Entertainment Auto Beauty & Health Books and Literature Business Electronics ... What is a GM 3970010?3932386, 3956618, 3970010 were used for the 69 DZ block and were all 4 bolt blocks. All the above block casting numbers were ALSO used for 327 motors. Check the numbers and good luck . Gold Founding Member #158 Old Blue The TC Search >> HOW-TO TC photo >> HOW-TO. Save Share. Like. F. frank rizzo Discussion starter ...Download Ebook Chevy 350 V8 3970010 Engine Manual Read Pdf Free Original Corvette 1968-1982 Internal Combustion Engine Manual Collector's Originality Guide Corvette 1968-1982 ... Chevy Small-Block V-8 Interchange Manual, 2nd. offsite.creighton.edu Edition Camaro Restoration Guide, 1967-1969 Diesel Engine Repair Manual Toyota1969 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. 1970 454 casting date of C 10 70 for March 10, 1970.

The blocks with the 3970010 casting number, were built 69-80 (and maybe later). They were built in BOTH 2- and 4-bolt versions. Again, it has been stated that the 4-bolt versions got higher tin-nickle percentages added to them. NOPE. ... We have another GM retiree on our CRG site who worked his career in the Tonawonda NY engine plant; he told ...My understanding is the 3956618 block was used for many high performance 302 and 350 applications beginning around January of 1969 while GM retooled the Flint plant for the 3970010 block. I don't understand the complete history and exact usage, but I believe the 3956618 block was used thru the end of the 1969 model year with a few of …Chevy block small 700r4 gearbox casting chevrolet engine plus number$199 gm 3970010 chevy engine block tyz corvette, camero or conv. cab Gm 350 engine block #3970010 chevy truck chevroletSbc cylinder head identification 15552.Block gm identify any help hotrodders forum finishChevy small block engine chevrolet casting number 3970010 plus gearbox $199 gm 3970010 chevy engine block tyz corvette, camero or conv. cabChevy small block engine chevrolet casting number 3970010 plus gearbox.Small Block Chevy Suffix Codes: TBT - TJS. GM body designation. 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 ...Oct 27, 2010 · 1968 3970010 327 2 bolt. This is a side post from my original post about my motor. Everybody knows the 010 block was used on 69 to 79 350s. Everybody do some research and let me know what you find on a rare 010 block 327 2 bolt built in 68 what they were in and maybe how many were produced if any. Keep and open mind and search more than one site.Alternator and Power Steering Brackets Kits, Billet Aluminum, Natural, Saginaw P Series, Long Water Pump Style, Chevy, Small Block, Kit. Part Number: ICB-551576. 4.41 out of 5 stars. Estimated Ship Date: Tuesday 5/28/2024...Loading Estimated Ship Date: Tuesday 5/28/2024.Jan 12, 2013 · 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.

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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.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.This is a file photo, not the actual photo of the block you will receive, but they will basically look new when received. 6/6/1969 F 6 9 3970010 BJ 2B. 1969-1979 Chevy Corvette Camaro Nova Truck Used 3970010 V8 Bare 2 Bolt Block | eBayFind many great new & used options and get the best deals for 1973 Chevrolet 350 4 Bolt Main W/Hi-Perf Camel Hump Heads & Corvette Covers.NICE at the best online prices at eBay! Free shipping for many products!3970010 block. Jump to Latest Follow ... We sonic test every stock GM block that comes in the shop and the 010-020 blocks don't seem to be any better then the 010 blocks from what we have seen. Save Share. Like. C. curtis73. 7033 posts · Joined 2005 Add to quote; Only show this user #9 · Nov 17, 2006. Mustangsaly said: I thought a high …Where the 3970010 is cast it just has a GM id above it and to the right of the number it has K 11 but thats it. Seems to be a bit of an oddball. As far as the 010 behind the timing chain there is a larger number 2 just above it but with no zeros. The higher nickel/tin is what I found in trying to research this block casting on the internet.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.We we see a 010 020 block, and for Chevrolet, the 307/350 was a high percentage of engines made in the 70's. At one time, the Chevrolet division had more model engines than all the other GM lines combined. 1960's 70's. Pontiac, Buick, Oldsmobile, Cadillac had mostly one design engine. with 2-3 cubic inch separation 350/400/455 Cadillac 472/500.Aug 26, 2021 · 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 first place we typically look is the casting number on the back of the block. There are dozens of numbers used from 1955 through the ’90s, but there are a few standouts that indicate a performance engine. Common casting numbers for performance engines include 3970010, but ours reads 3956618, another great number to put in your memory bank.

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The 327 Chevy engine has 365 horsepower at 3,200 rpm. The 327 cubic inch displacement top-end carbureted V8 motor has a bore and stroke of 4 inches by 3.25 inches. The torque rating is 350 lb-ft. at 4,000 rpm. The compression ratio is 11:1. The compression rating is 140 pounds per square inch. We have much more information about the ever ...When comparing mechanical roller to hydraulic roller cam specs, remember to subtract the lash from the mechanical roller lifter's net valve lift numbers. So if the cam has a gross valve lift of 0.550 but requires .020-inch lash, the net valve lift is really 0.530 inches.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. It's very common for suffix codes to be used again in later years for a totally ...Nov 11, 2005. 8,399. living the dream in my own world... rwflather said: I also have a 3970010 block. It has the 010 and 020 on the back and front, so I also know it is a high tin/high nickel block. The casting date is I 3 9, so I assume it is late 69/early 70 block, and is a 4 blt main block.I have a choice of 2 clean std bore blocks to use for a 383 mild street build max 500 HP, 1 is 3970010 4 bolt with good sonic test etc. Other one is GM Goodwrench Mexico build 10066036 4 bolt with little use, not yet sonic tested. Is there any advantage in using the Mexican late model 2 piece seal block ? if so, can anyone let me know details ...Send Private Topic. View Profile. Re: Decode Small Block 3970010. 12-13-06 03:06 PM - Post# 1050067. In response to DonSSDD. On the block deck at the front of the pass side head are a set of engine codes. Find them, post them and I will tell you exactly what it is. Should be 2 different sets like this example'. 18N300001 con vim.That casting number is the most common 4" bore block that GM ever made. Depending on your use, the clearance could change. High performance and racing engines usually use clearances a little loose to compensate for higher oil volume and pressures. For a stock rebuild I shoot for between .002 and .003, trying to get right around .0025. Gary1970 - 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. Parts Only.Loaded in 1 ms.. There are 2,506 casting numbers in the database.2,506 casting numbers in the database.3970010 then there is the clock looking marks that looks like it is pointing to 3, and then a "T", a "D", and an "N" with a mark pointing to the "D" ... Cam is a GM LT-1 (solid lifters), cast in December, 1975 (service part). Block was made at McKinnon Industries (Canada), cast November '73. :thumbsup: JohnZ CRG. Save Share.What is gm casting number 3970010? It's a 4" bore block. Has been used for 302, 327, and 350 engines. What is gm block casting number j 1532142 4bolt and what year? ….

Mar 15, 2013 · Posts: 186. 3970010 Engine Suffix Help. I recently purchased a 67 Sb 2wd. The seller did not know which engine it had but suspected it was a 305 or 307. The Engine Casting number is 3970010 and the Suffix is V0199800 (Front Passenger Side of engine). The Casting number is leading me to believe it's a 350. It's highly doubtful that its a 302 or 327.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.Tags Chevy 350 Subjects. Animals & Plants Arts & Entertainment Auto Beauty & Health Books and Literature Business Electronics ... What is a GM 3970010?could some chevy cylinder heads-casting #10110810 thats 91 and up, fit on a chevy small block 350 casting #3970010 thats years 1969-1980 4-bolt main … read more kalamykidSmall Block Chevy Suffix Codes: TBT - TJS. GM body designation. 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 ...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 ...1969-79 3970010 350 185 370 2 or 4 car, truck, Vette 3970010 350 69 Corvette Late 69, 4 Bolt Main 3970010 302 69 Camaro Z/28, Late 69, 4 Bolt Main ... There's no such thing as a "302 block" - 302's used the same 350 block as millions of other Chevy cars and trucks; just had different crank, rods, and pistons installed in it. Save Share.1005 posts · Joined 2002. #4 · Oct 31, 2002. The only why to i.d your motor with out tearing it down, is with the stamped (Suffix ) Code on the right front (Passenger side) Of the block.Just below the head. The 3970010 casting numbers were used for 302/327/ and 350 blocks.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 different origin and date: K = St. Catherines, Ontario (some GM engines were cast in Kosai, Japan [K] however for this block, I highly doubt it) 09 26 = September 26 3970010 gm, GM Engine Stamping Info Please. top left "corner" GM 3970010 and in the next "bay" is 11. Pretty sure this isn't a "south of the border" block as no Hecho En Mexico stamping. I was told this is a mid-70's block....true or false? As you can see this was a rather common casting number., 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. ... Thanx for the information. I decided to purchase this block since older genuine GM cast iron blocks are getting ..., 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 ..., Trying to find out what this motor is casting # 3970010 and the # behind the alternater # k0302tdt - Answered by a verified Chevy Mechanic, 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., Actually, the "010/020" cast into the front bulkhead under the timing cover turned out to be simply the identifier for the foundry pattern for the front bulkhead, which was shared by the 3970010 (350) and 3970020 (307) blocks; it had nothing to do with the iron alloy, which was never altered for any particular production block (although the alloy was …, 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. ... Truck/Chevelle/Chevy II/Camaro : 3970010 : 1969 : 302 : 290 : 4 : Z-28 Camaro : 3970020 : 1970-73 : 307 : 2 : 3970024 : 1969-73 ..., looking for id information on my small block chevy egine numbers. the block casting number is XXXXX the block number is XXXXX … read more. RICK. Service Director. High School or GED. 423 satisfied customers. Gm casting number 3970010, 350 4 bolt mail block., 22 posts · Joined 2012. #3 · Jul 19, 2012. No it isn't. There is no date code or clock on rear of the engine. One forum quoted that GM moved date codes to the side of the block in the 70's. This is passenger side between the core plugs. Block code (in the usual place) confirmed as 3970010 "M" code next to this., This is a file photo, not the actual photo of the block you will receive, but they will basically look new when received. 6/6/1969 F 6 9 3970010 BJ 2B. 1969-1979 Chevy Corvette Camaro Nova Truck Used 3970010 V8 Bare 2 Bolt Block | eBay, Can someone help me, to identify this motor. I need to know what parts are compatible with it. V = Flint Plant 10 = October 15= 15th day of the month TMM = 74 350 …, High quality parts were used throughout: 3970010 high-tin GM block, forged everything, roller everything, AFR 195 "Eliminator" CNC heads, 10.5:1 SCR, Edelbrock RPM Air-Gap port-matched to heads, custom Comp Cams hydraulic roller designed for maximum torque and good low-speed output. Goal was absolute maximum performance consistent with 25mpg ..., 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 individual letters found on blocks like "GM" or "CFD" for the Central Foundry Division, but they are not part of the block casting number. Also some of ..., Small Block Chevy Suffix Codes: HR - TBS. GM body designation. All these are identified . Quickly, A = Chevelle, F = Camaro, X = Nova. If you're looking at the engine code - this is already known. If you're looking at the casting # information and it mentions 3970010 "A/F/X/Y/B".... basically this means "it's used in everything", whereas if it ..., The first one or two digits indicate the month of manufacture. Yes, it’s that simple: 01 for January, 02 for February, and so on. What follows are two or three digits that specify the day of the month. So, “093” would signify that the engine was cast on the 9th of March. The tale doesn’t end here, though., 1981 Chevrolet El Camino. Oct 21, 2020. #1. I recently bought a 1981 El Camino with a bunch of cool stuff done. The most interesting is the 90's era VORTEC heads on a "3970010" 70's era block. (I think) I am attaching the casting number / Block Stamp and date code from the block. Has anyone seen this conversion?, Engine Code Stamping Number. This code contains important information about the engine, such as the plant where it was produced and the date of production. For example, the engine code stamping number on a Chevy 327 engine might read “V0404HC”: “V” stands for the Flint, Michigan plant. “0404” indicates April 4th as the build date., In 1972, an iconic strike at GM's Lordstown plant forced America to confront the human need for meaningful work. When General Motors announced last month that it was shutting down ..., Best Answer. I can't give you an exact year based on casting number alone because Chevy used that casting for several years from 1969 through the mid 1970's. It's one of the better (and more ..., To SBC Block Casting Number 14010207. C3 Tech/Performance - SBC Block Casting Number 14010207 - I am having a 383 stroker built for my 71 . I had specified to the engine builder I wanted a casting#3970010 block since this was the original. I was concerned about all the accessory holes, clutch cross-shaft mount , etc., Jul 18, 2007 · 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 yet., 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)., Donny Discussion starter. 6 posts · Joined 1999. #4 · Jul 23, 2000. The front pad has been machined and there are no other numbers visible on this block as it is still in the vehicle. The numbers are definitely 3870010. One other note, the damper is BIG and the heads are "186". Thanks guys., 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., I know that there was a big shakeup in 1969 where GM changed the structure and put all drivetrain into a division, and from that time forward casting numbers appear to be shared, for example 3970010 blocks appear across Tonawanda, McKinnon and Flint engine plants from mid 1969. This may partly have been to do with strikes that also see …, Only show this user. #1 · Dec 10, 2014. Im trying to verify my numbers/facts before looking at a possible purchase. Are these the correct casting numbers for a 69 302. Heads: 3927186. Block: Before April of 69 3956618, After April 69 3970010. Crank: 1178. Intake: 3932472., Engine Gasket Sets, Full, AM General, Cadillac, Chevy, GMC, 5.7L, Kit. Part Number: FEL-260-1735T. 5.0 out of 5 stars. Estimated Ship Date: Tomorrow. Free Shipping...Loading Estimated Ship Date: Tomorrow. Free Shipping; Fel-Pro Engine Gasket Kits 260-1000AT. Fel-Pro Engine Gasket Kits 260-1000AT, 3970010 shows 68-1969 327 2 bolt and also shows 69-1979 3970010 350 185 370 2. This id # located on drivers side rear engine block stamped on pad. R.S.rear engine block has c-110 on it and R.S. front engine block has 12347 and drivers side of block 371 and 386 and 11618N suffix code should be the 12347# but no luck help please, Send Private Topic. View Profile. Re: Decode Small Block 3970010. 12-13-06 03:06 PM - Post# 1050067. In response to DonSSDD. On the block deck at the front of the pass side head are a set of engine codes. Find them, post them and I will tell you exactly what it is. Should be 2 different sets like this example'. 18N300001 con vim., Re: Chevy 3970010 block Post by Blue Malibu » Tue Sep 29, 2015 12:56 am We used to have a good deal with a local dealership, paid them the scrap price foe complete engines, and we had a bunch of those blocks, some were out of vehicles, but most were returned core gm goodwrench engines., Trying to find out what this motor is casting # 3970010 and the # behind the alternater # k0302tdt - Answered by a verified Chevy Mechanic, Hallo, es geht um einen GM V8 5.7 Motor, dessen Typ nicht genau bezeichnet werden kann; d. h. man kann nicht sagen es ist ein Mercruiser 350 xy oder Volvo Penta 5.7 GL. Der Block hat die Gussnummer GM 3970010, die Köpfe haben Ventilddeckel mit mittiger Verschraubung (4 je Deckel). Die Kolben tragen u. a. die Bezeichnung 345NP und …, 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.