Can anyone tell is this a casting number for a 350 (3870010). I saw a add for a bare block 350 and that was the casting number I was given. I looked for it but could not find any info on it. ... Chevrolet Camaro -69 , 454/TKO600 Pics. of my Camaro: ... 3970010 ,302/350 ,1969-79 ,145-370HP ,car & Truck 2 & 4-Bolt Most commonSmall Block Chevy Suffix Codes: CMK - CUD. 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 ...from Lakeville MN. According to a book i have "How to Build Vintage Hot Rod V-8 Engines" Page 72 "the small-block Chevrolet 350-ci engine blocks with a casting number of 3970010 are some of the best. you will find the digits "010" and "020" behind the camshaft gear at the front of the engine block. the "010" represents 1 percent additional …The code is 3970010 (69-79 or 80 350). I am trying to figure out any other information about this block, what year, what it came from, etc. I have not dropped the pan yet, so I do not know if it has 2 or 4 bolt mains. I am assuming that it is a 350 and not one of the '69 302s or 327s.No value in those numbers, and the deck must have been machined if the VIN or "CE" replacement codes are gone. I had a El Camino with a 010 CE replacement block, it was a 270 HP version. Swapped in a SBC 400. So, that 010 is a common 350 block, nothing special as a block unless it was coded for a an application lie a Z28 (70+) or LT1.Apr 14, 2023 · 3970010 - This is a small block V8 engine that was produced from 1969 to 1980. It was used in a variety of GM trucks, including the Chevrolet Camaro, Corvette, and Nova. 14015445 - This is another small block V8 engine that was produced from 1975 to 1985. It was used in the Chevrolet C/K truck and the GMC Sierra.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.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 ...How to identify a 4 bolt main small block chevy.This deals with one trick that I use that has always worked for me in identifying a 4 bolt main small block.s...3970010 - This is a small block V8 engine that was produced from 1969 to 1980. It was used in a variety of GM trucks, including the Chevrolet Camaro, Corvette, and Nova. 14015445 - This is another small block V8 engine that was produced from 1975 to 1985. It was used in the Chevrolet C/K truck and the GMC Sierra.Chevy Small Block Engine Casting Codes. First Generation Pictures; ... Passenger/Chevelle/Chevy II/Corvette/Camaro : 3970010 : 1970-80 : 350 : 145-350I have a 1975 Chevy 350 truck motor in the car and a Muncie M20 with a 3858403 bell housing. This is the information I have on the block: Casting: 3970010 1968-1979, 327 and 350ci, 145-375HP, 2 or 4 bolt main. Used for trucks and high performance applications. VIN Stamping: C5U114394 C - Chevy truck 5 - 1975 U - Lordstown, OH assembly plantWith the exception of a "010" and "020" found under the timing cover and on the back of the block near where the starter mounts. The 010/020 indicates the 'formula' used for the casting (% of tin and nickle) [This message has been edited by Marv Davis (edited May 15, 2001).] May 15, 2001. #3.3970010 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 ...The LT-1's connecting rods were of a heavy-duty ⅜" bolt configuration and measured 5.700" in length while weighing just under 21-ounces a piece. Opposite the crankshaft, these connecting rods supported specialized forged TRW pistons, of a high silicone aluminum construction. Each piston was secured with the use of pressed chromium-steel ...The 3970010 block was used from 1969 through 1975 in, as far as I can tell, only 4-bolt main applications" I have to question the "only 4 bolt" aspect. I have 2 3970010 blocks, one is a 2 bolt from a 72 midsize and the other is the coveted "010-020" 4 bolt block from a 73 1 ton truck.3970010 is no better than any other 70s block. It has all the same casting shifts, and machining errors like starter bolt patterns that are too far from the crank CL, lifter bores that don't point at the cam, or dowel pins that aren't registered on the crank CL, as any other casting # from the era of the worst quality control in the history of US cars.3970041, 3814660, 3970010, 3914678, 3932386, 3955618: 327: 1968-69: ... Note 1: Small-journal 302-CID engine uses 327 block. Note 2: Large-journal 302-CID engine uses 350 block. Small Block Chevy Cylinder Head Casting Numbers. ...Chevy 3970010 block. General engine tech -- Drag Racing to Circle Track. Moderator: Team. 17 posts Previous; 1; 2; ventura74 Pro Posts: 208 Joined: Fri Aug 14, 2015 12:22 am Location: Il. Re: Chevy 3970010 block. Post by ventura74 » Thu Jul 27, 2017 4:43 pm. Barry Burch wrote:I could not state with certainty the block hadSend 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.If you need to block a phone number for whatever reason, the good news is that it’s easy to set up a block list or blacklist a number for all varieties of phone services, whether i...May 3, 2015 · Please tell me what I have. Block is a 3970010 , opposite side of block is stamped G17. Has what I assume is an original 2 barrel intake. Block deck has the following codes: V0328CHK. 18c122629. It's supposed to be a 1971 350 SBC...that's not washing out after looking at these numbers. Thanks!Reviews, rates, fees, and rewards details for The My GM Rewards Card™. Compare to other cards and apply online in seconds Excellent Credit, Good Credit $0 Earn 15,000 bonus points ...The 3970010 block was used from 1969 through 1975 in, as far as I can tell, only 4-bolt main applications" I have to question the "only 4 bolt" aspect. I have 2 3970010 blocks, one is a 2 bolt from a 72 midsize and the other is the coveted "010-020" 4 bolt block from a 73 1 ton truck.PRI 2023: New Moroso Big-Block Chevy, Two-Piece Racing Oil Pans PRI 2023: Strange's New Hall Effect Driveshaft Sensor Kit Creative Automotion: ... This DZ wears a 3970010 casting number meaning its a very rare block, but still the question remains,whats it worth? Other details: E19 date code - fist week of May '69 build date ...When it comes to purchasing a new car, one of the first things you might search for is a “GM dealer near me.” And for good reason. There are many advantages to choosing a GM dealer...Small Block Chevy Suffix Codes: TJT - TXB. 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 ...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.automatic trans. H. -. -. full size/Camaro. Last updated: 12/1/2014. MadMike Maciolek. (tm) Decoding small block Chevy engine suffix codes and stamped numbers: CE - CMJ.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.On a small block Chevrolet, the casting number is found at the rear of the block on the driver's side (as is with Chevy's big block engines). The engine ID code stamping is located on a flat pad in front of the passenger side cylinder head (big blocks can be in the same location or above the timing chain cover, with inline-sixes stamped on the passenger side of the block behind the distributor).Decoding small block Chevy engine suffix codes and stamped numbers: TBT - TJS.without the suffix code, can you tell what it is by the other #s on the block? 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. But what about the other #s on it.Might be hard to find. 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 the 010 blocksI have a 69 GM block whose casting number is 3970010. The date code is L89 which matches with that cast being made late in the 69 production year. It also has the 1178 steel Z/28 crank in it. My problem is this - The engine pad ONLY displays this: C15408UThe #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.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.1 post · Joined 2011. #11 · Jul 7, 2011. Ray J Neal said: 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.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.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.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.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 …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. ... It definately has the 3970010 code at the back of the block on the drivers side. '72 sounds much better than '80! Also,without the suffix code, can you tell what it is by the other #s on the block? 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. But what about the other #s on it.1970 Chevy Nova Jan 26, 2023 #1 Looking for motors for a kid I sponsor in IMCA Hobby Stock. Found a motor on FB marketplace and theres a number on the front of the block I havent seen before. ... The block is a 3970010 sbc, but on the front of the block next the timing chain cover is the number 509. Need to make sure this block is ok for what I ...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.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 casting date E 27 9 (May 27, 1969) ... Small Block Z/28 302, DZ, GM Original : Alternative Views: PART NUMBER: ENC-302E. Currently not available with no ETA1 post · Joined 2011. #1 · Jul 9, 2011. I want to ID my small block Chevy engine. The numbers I have include: (a)the casting number is 3970010, (b) there are two serial numbers on the front passengers side of the engine, these numbers are V0505TDR and C8F454789. I would really like to know cubic inches, horsepower and 4 bolt main or 2.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.Loaded in 1 ms.. There are 2,506 casting numbers in the database.2,506 casting numbers in the database.Chris agree with others on sonic test, but personally I'd look for another block. The 350 4 bolt blocks are plentiful and often you can get them for free. I've had a 350 +.030 block crack the entire length of the #1 cylinder and also on the outside just below the deck between cylinders 3 & 5. Also cracked two 350 blocks that were +.060.2. K-20. Enter your engine SUFFIX CODE in the Search box below. E.g. 0FC, 0XA, 1XJ, etc. Or read about engine serial numbers first to identify the suffix code. Bonus: Want to know the information about your GM/Chevy engine? Enter the engine serial number suffix code in the "Search box" to find out the year, C.I.D, etc.You need to look at the full 7 digit casting number on the rear of the driver side of the block to find the 3970010 number. Somewhere in that same area is the date code. ... 1956, and 1957 Chevy owners and enthusiasts. Come join the discussion about restoration, engine swaps, reviews, performance, modifications, classifieds, troubleshooting ...What motor is a GM 3970010? 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.I have a 1969 small block chev that I would like help to verify what it is.block cast number is (3970010) the stamped number on cylinder head deck are ko4 13 ckj another one 3€€21283 and the last is 231517240. ... The engine block casting number "14010202" is associated with a small-block Chevrolet V8 engine. Specifically, it is often ...S. shooter1951 Discussion starter. 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.Find many great new & used options and get the best deals for 1969-72 SBC Small Block Chevy 350 Long Block 3970010 J-25-1 Heads 3962441 B-18-9 at the best online prices at eBay! Free shipping for many products! ... NOS GM BIG BLOCK CHEVY BBC LONG SLOT HIGH PERFORMANCE 'H' ROCKER ARMS 427 454 (#335137955154) t***v (37) - Feedback left by buyer ...Product Summary. 350. Complete rebuild assembly kit for 1969-Up Small Block Chevy Engines. New high tech, internal balanced, fatigue resistant 80-60-06 cast steel crank with near forged endurance. These 5140 forged steel claimer I-beam connecting rods - Press fit style wrist pin bore. Keith Black economy pistons feature coated skirts, wrist pin ...Find many great new & used options and get the best deals for GMC 3970010 CHEVROLET 350 4 BOLT MAIN BARE BLOCK W/ END CAPS .30 OVER OEM 1975 at the best online prices at eBay! Free shipping for many products!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 ...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 the 010 ...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.I have a 3970010 block in my 69 camaro that is stamped "CEB1362" on the pad behind the alternator. ... A forum community dedicated to 1st generation Chevy Camaros owners and enthusiasts. Come join the discussion about performance, builds, restoration, modifications, classifieds, troubleshooting, reviews, and more! ...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.Zerostart 3400017 Portable Electric Heat Magnet Heater/Transmissions, 120V, 200W. $76.93. Trending at $83.32. Find many great new & used options and get the best deals for 350 SBC Chevy Small Block Engine 2 Bolt Main 3970014 1975 at the best online prices at eBay! Free shipping for many products!Chevrolet shows this block being used as early as 1964 in 300+ hp applications and commercial trucks. Used interchangeably with #3858180 in some applications. This block has been found to have been used on some late 1965 model year L79 Chevelles built at Baltimore. 3858180: 1965 1966: 327 327: 250, 300, 350 (2)From this chart - I think you may be misreading the number - 3970010 is possibly the actual number: Which makes the engine pretty old 68-72 350 V8 - 4 bolt main. I included past this number so that you can see that the number you posted doesn't actually exist. And thus my conclusion that the 9 is most likely a 0.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" …Block casting numbers 355909 what size motor? It is a Chevy 305 or 262 cubic inch. You could tell by measuring the bore of the cylinder. A 3.671 bore is a 262 and a 3.736 bore is a 305.Feb 1, 2024 · A typical casting number for a Chevrolet small block V8 engine is 3970010. This designation shows a particular kind of engine block that was mostly used in various automobiles. The Chevy engine blocks’ casting number provides a lot of details about the engine block, such as: Displacement. 2 or 4 bolt main.3956618 is a generic small block which could be configured as a 302, 327, or a 350. The engine ID suffix code stamped on the pad on the block at the front of the passenger's side head will give you the specifics. You might get a better idea of possible value once you confirm what you have. Last edited by Easy Mike; 06-28-2017 at 07:22 AM.Are you tired of receiving unwanted calls from telemarketers, scammers, or even ex-partners? Look no further. In this article, we will introduce you to the best free apps for block...Hi guys, hoping someone can set me straight about the block I have. I have a bare block that has casting number 3970010, it is a 4 bolt main block with the main caps stamped 2842, it also has 010 buy the oil filter housing which means 10 percent more iron or nickel which should mean a better block. However these blocks were 302 in 69 and 327's ...The casting # of 3970010 indicates a 1968-1979 4.000" bore block casting....so the 1965 Corvette stamped code of "HV" for a 327/350 HP engine cannot apply here...it isn't a "corvette motor", based off the "HV" code being used in 1965, and this block wasn't even cast yet at that time. There are many of the truck, industrial, agricultural, marine ...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 ...Employees and suppliers of General Motors with one of the company’s branded credit cards can earn money to spend on a new GM vehicle. GM refers to the cash earned on the cards thro...Socrates is a Web-based program for General Motors’ employees. Employees use the program to stay informed about changes and updates within the company. Employees must register to u...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.As before, the only casting number in the back of the engine is as follows: These letters stamped in the block T, D, N with the arrow pointing to the letter N, there is the number 3 stamped about two inches from these letters, a large letter and number 4GM, and the block casting number 3970010.Apr 14, 1999. 25,179. Bismarck, North Dakota. They are basically the same. Chevy made both castings and used them pretty much interchangeably over the years. The 3970010 seems to have been made in much larger …$575.00. andrewduntov72 (2,944) 100% Buy It Now. +$225.00 shipping. 69 CHEVY DZ 302 Z28 ENGINE BLOCK 3970010 E229 CAMARO 4 BOLT MAIN STD BORE MAGGED. Pre-Owned. $3,500.00. classicjunkyard (15,985) 100% Buy It Now. Freight. 13 watchers. 1978 CHEVROLET 4 BOLT MAIN 350 ENGINE BARE BLOCK. SUFFIX: TWZ. 3970010 WE …What Block Do I Have 3970010----1969--1972---2 or 4 bolt main---Corvette,Chevelle,Camaro, Nova,Trucks as well. ... Only show this user #4 · Feb 12, 2018. Chevrolet By The Numbers lists this block as being introduced in April/May, 1969, and used through 1975 in both cars and trucks. In 1969, it was used in 350 CID applications in full size ...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.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 …SBC 350 Bare Engine Block 3970010. Casting #: 3970010. This is a 350 Chevy bare block. 4 Bolt Main Machined and Painted Chevy Orange. Block painted Chevy Orange. Block has been Bored and honed. 040".The 3970010 block has "010" in the timing cover area. The 3970014 block has "014" in the timing cover area. It's pretty obvious to me what it means, but I'm not an old wife.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 ...This is a file photo, not the actual photo of the block you will receive, but they will, Here's the applications that I found: 3970014 350 69-77 Pass,Chevelle,Camaro, N, item 6 1969-72 SBC Small Block Chevy 350 Long Block 3970010 J-25-1, Re: Engine Casting Block #3970010. 02-12-06 09:07 PM - Post# 873, I've got a 3970010 4 bolt block. Someone told me if there is a 10 o, camaro-parts-world. 99.9% Positive Feedback. Seller's other items Contact. Joined Dec 2005. Find many great ne, Chevy 3970010 block. General engine tech -- Drag Racing to Circle Track. Moderator: Team. 17 posts Previ, SNTAuto Discussion starter. 1468 posts · Joined 201, We we see a 010 020 block, and for Chevrolet, the 307/350 was a high , It's a 5.7L (350 cubic inch) small-block, V8 , If this listing is still up it's still available!! Chevy stock 350 sma, This 69 350 block has casting number 3970010 with an E (May), C1 & C2 Corvettes - How to get the most hp heads and cam for a, The block casting number on smallblock and big block Chevy V-8 moto, The block I aquired has the casting #3970010. But in front, GM engine block # 3970010 was used as early as 1968 on so, I have a Chevy 383 small block stroker gm 3970010 3200, I know that there was a big shakeup in 1969 where GM changed the struc.