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3970010 gm - Fresh 69 Camaro Z/28 302 DZ complete engine. This is the real deal, black casting # 39700

GM 3970010 - 4 Bolt Main Block Original Chevy 350 Motor Engine for Sale. Running 1974 chevy cor

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.Chevrolet Small V-8 Cylinder Block Casting Numbers 1955-1985 These listings are always a work-in-progress. If you have any documented info that can be added to these pages, please contact me and let me know.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.GM provides two separate discounts to the family members and friends of GM employees. To receive the Family First discount, a purchaser must be a family member of a GM employee. Em...from Sierra Vista AZ. mortec will tell you it's a 1969-79 350 or a 69 302, based on the casting number. not much help, really. squirrel, Apr 6, 2006. SHARE POST #8.The Big Al. 16098 posts · Joined 2007. #2 · Mar 3, 2013 (Edited) TDB = 1980 350cu 190hp GM replacement engine. The casting is a3970010 I have seen the last number left off. Could be a 2 or 4 bolt main. Note: Engine could have been rebuilt and used a 350 block for the 327. Al.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 ...The 3970010 block casting number was used from 1969-1979.... But the "AAB" code narrows it down to the 1976 model C-60 (big truck chassis) like a grain truck, heating oil delivery truck, Fire tanker truck, etc. So block is a 1976. Listed as 8.5-1, but will actually measure out a bit lower than that, more like 8.1-8.2:1.The 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 …1976 Corvette Performance & Specifications. Powertrain, Steering, Brakes, Dimensions, & Suspension. By 1976, the United States economy was on the mend from the 1973 - 1975 global economic recession. The recession, which had been caused in part by the 1973 oil crisis, had caused gas prices to soar which, in turn, had made automotive ...Jack parts auto 2475 culver call near any pm before city caChevy 350 / 325 hp high performance balanced crate engine Sb chevy complete engineChevrolet chevy engine 350 camero 3970010. Offerup gm bolt350 sb chevy complete engine Chevy 350 / 325 hp high performance turn-key crate engineEngine chevy crate 350 turnkey engines down.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. You can ...GM provides two separate discounts to the family members and friends of GM employees. To receive the Family First discount, a purchaser must be a family member of a GM employee. Em...B. BogiesAnnex1. 17591 posts · Joined 2007. #7 · Jan 25, 2013. Your title lists the casting number as 3970010, if this is indeed an 010 casting it is the highly desireable heavy duty 4 inch bore block that was used for some 302's and 327's and a ton of 350's. It was used as a basis for high performance passenger car engines as well as …Chevy Casting Number identification including Block casting numbers, cylinder head casting numbers, Crankshaft and intake casting numbers. ... 3970010. 69-79. 302/350 ...How to find out the CID of a 3970010 engine number identification. 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 ...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.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 ...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’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.3970010 302/350 69-79 145-370 car & Truck 2 & 4-Bolt Most common 3970014 350 68-79 200-255 car & Truck 2 & 4-Bolt ... "The 267 was introduced in 1979 for GM F-Body(Camaro), G-bodies (Chevrolet Monte Carlo, El Camino, and Malibu Classic) and also used on GM B-body cars (Impala and Caprice models). ...There is no way a 3970010 could have came in a VanNuys 12B built 69 Camaro. the 3970010 V0926DZ stamped block is most likely from later 69 and that casting date is probably I 18 9. ... A forum community dedicated to 1st generation Chevy Camaros owners and enthusiasts. Come join the discussion about performance, builds, restoration ...We have V6, V8, and L4 engine block types, and bare blocks of various materials including aluminum, billet aluminum, steel, cast iron, and ductile iron. Find the perfect foundation for your Chevy, Ford, or Mopar build-up, including Chevy 350 and 454, Ford 302 and 351w, Hemi, Corvette, LS, and LSX engines. Explore Summit Racing's vast ...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 ...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?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 ...The Block Casting Number is GM 35 3970010. The Engine ID Stamping is no longer visible due to deck resurfacing. I don't plan on removing the oil pan or valve covers to look at other codes, just trying to determine anything I can from the outside of the motor. ... 3970010 = 68-80 350 2 or 4 bolt main 4 inch bore J67= October 6 1967, or 1977 ...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 ...The 3970010 block were a good place to "start" when looking for a high nickel content block. Last edited by builder; 05-03-2010 at 02:57 PM. Reply Like 05-03-2010, 03:05 PM #13 Solid LT1 ... Please show me GM documents to prove me wrong and I will retract my post. Edit: David Vizard says this in his book "Budget Building Max Performance Chevy ...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 ...yes most all 3970010 are 350, but some in '69 were passenger car 327 and 302 camaro blocks, in which are the same 4" bore like the 327 were as well, in which also shared this block casting. but since it has the three digit suffix stamping code (CKL) it will be a 1970 and later engine. 3970010 was from 1969 to 1979, car truck or van, and can be ...what cam should i use to have a nice idle sbc 350 3970010. #Lemanster: Our Ultimate Road-trip Cruiser Build! Better choice: Summit Racing SUM-K1103 - Summit Racing® Cam and Lifter Kits - Overview - SummitRacing.com has been used by several members here with good results,and comes with lifters. Summit Racing SUM-1102 - Summit Racing® Camshafts ...Need starter part number for SBC 3970010. SB 350, 882 heads, Long Tube headers, Comp 280 Magnum cam, Pefrformer RPM intake, Edebrock 600 CFM manual choke carb, 3.92 gears. DL3510S in a duralast number. Bringing history and technology together. Since chevy used 2 different flexplates and starters, a single part …Also forgot to mention this block was used for both 327 and 350 cubic in. motors. Became a 350 for 68 up in most Chev. lines. Block usually will have the 10/20 tin nickel content. However, it can come in either a 2 or 4 bolt main configuration. Generally the 010 blocks are good for making perfornance engines.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...The Hummer H3 comes standard with the Homelink system. This system consists of a transmitter and a small control panel that you can program to your home's garage door. This allows ...Kdemmons Discussion starter. 4 posts · Joined 2020. #1 · Sep 7, 2020. I have a Chevy engine with the casting number 3970010 from I can see they use this for a couple of engines the VIN is v0610chf I can decode most of it except for the hf at the end can anybody help me out. Like.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 ...May 15, 2008 · 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.Can you determine what type of car or truck this engine was in by the block number or casting number Casting# 3970010? - Answered by a verified GM Mechanic. ... please. small block chevy, 390010 drivers side tranny flange. 0413tbb passenger side front of block. heads have numbers(NNN) NNN-NNNN under that, a231. ...1 post · Joined 2008. #1 · Aug 3, 2008. I have recently aquired a chevy small block and I'm having trouble finding out exactly what it is. I have found Four numbers. 3970010 along with "hecho en mexico" on the back drivers side. 254 on the back passenger side. 010 on the drivers side in front of the oil filter. and the engine code is "MK01800."The Big Al. 16098 posts · Joined 2007. #2 · Mar 3, 2013 (Edited) TDB = 1980 350cu 190hp GM replacement engine. The casting is a3970010 I have seen the last number left off. Could be a 2 or 4 bolt main. Note: Engine could have been rebuilt and used a 350 block for the 327. Al.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 …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! $4,890.00HEI Distributor Upgrade Kit, 50,000 V Coil, Cap, Rotor, GM V8, Clear, Kit. Part Number: DUI-240001CL. 4.75 out of 5 stars. Estimated Ship Date: Today...Loading Estimated Ship Date: Today. Hypertech Power Coil and Cap and Rotor Kits 4050. Hypertech Power Coil and Cap and Rotor Kits 4050Need starter part number for SBC 3970010. SB 350, 882 heads, Long Tube headers, Comp 280 Magnum cam, Pefrformer RPM intake, Edebrock 600 CFM manual choke carb, 3.92 gears. DL3510S in a duralast number. Bringing history and technology together. Since chevy used 2 different flexplates and starters, a single part number isn`t going to do you much ...3970010 means it a 302 or 350 made between 69 and 79 for car & Truck. It had 2 or 4 bolts. you can look up here- https://chevygeek.com/chevy-block-casting-numbers-full-list …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.Loaded in 1 ms.. There are 2,506 casting numbers in the database.2,506 casting numbers in the database.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.Tesla's market capitalization was roughly $89 billion at Wednesday's close, $2 billion higher than the market values of Ford and GM combined. Jump to Tesla's recent stock rally has...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.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.Item description from the seller. Up for sale: CHEVROLET 1971 350 STD 4.00' BORE 3970010 ENGINE BLOCK 2 BOLT CGA A F X BODY CAMARO CHEVELLE NOVA 350 The tag reads CCA its wrong its CGA 350 only /RF7/. Please note that the pictures count as most of the description. Please see pictures for additional details.item 7 Chevy 350ci V8 SBC Engine Block 3970010 010 020 Std. Bore Chevy 350ci V8 SBC Engine Block 3970010 010 020 Std. Bore. $600.00. item 8 FINISH MACHINED 350 4-BOLT 3970010 ENGINE BLOCKS (READY TO ASSEMBLE ) FINISH MACHINED 350 4-BOLT 3970010 ENGINE BLOCKS (READY TO ASSEMBLE )The Block Casting Number is GM 35 3970010. The Engine ID Stamping is no longer visible due to deck resurfacing. I don't plan on removing the oil pan or valve covers to look at other codes, just trying to determine anything I can from the outside of the motor. Thanks for any help !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 260-1000ATjokes310 said: how much hp could a 2 bolt main block handle casting # is 3970010. Get ready for the because most everyone has a different opinion. The 010 block is a decent one ... if everything is OK ... core shift is a big factor. LOOK at the camshaft hole in the front of the block. IF the camshaft is in the center of the raised casting spot ...In the case of Chevrolet, its engines have a 7 to 8-digit serial code stamped onto the engine block. This is then recorded onto Chevrolet's own engine block registry. Note, that the 'engine serial number' (or 'engine ID') in this case shouldn't be confused with the 'casting number'.Gm casting number 3970010, 350 4 bolt mail block. Need car detail. I have a 350 4 bolt main block with casting number(###) ... I have a 5.7 350 chevy engine and I'm not sure what it came out of I think it is an L series engine the # XXXXX on the front by the head is ...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 ...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 Engine ...Some smallblock blocks may also have the BLOCK CASTING DATE on the driver's side of the block. (3) indicates the position of the BLOCK CASTING NUMBER. Later blocks may also have the size of the engine displacement in liters listed at (3). (4) indicates the position of the ENGINE ASSEMBLY DATE/SUFFIX CODE and partial VIN code information on the ...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 …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).The number is 3970010. Ok, It seems the numbers and letters you posted go nowhere. You know 3970010 is either a 1968 327 block and a 1969-1979 350 block. You will have to get some other codes to figure this out. The small block Casting Date is located on driver side rear of block on flange forward of bellhousing.The heads will work on the block - They are the swirl chamber heads mostly used on Chevy and GMC Truck T.B.I. 350 c.i. - center bolt valve covers (1987-95) - If you are looking for any kind of performance out of your motor, you may want to use a different head - the swirl port was not the best design for performance - they were used mostly for low end torque which is why the vast majority came ...C1 & C2 Corvettes - How to get the most hp heads and cam for a 3970010 short block? - I am posting this for a friend of mine. This might be a difficullt question to answer since i know nothing about the pistons, rods, crank or other parts used in this engine. But let us say it is an original engine according to the...Need starter part number for SBC 3970010. SB 350, 882 heads, Long Tube headers, Comp 280 Magnum cam, Pefrformer RPM intake, Edebrock 600 CFM manual choke carb, 3.92 gears. DL3510S in a duralast number. Bringing history and technology together. Since chevy used 2 different flexplates and starters, a single part …I got a freebee block that I am trying to sell but I nned to ID it first. The casting number is 3970010, and the code stamp/suffix is V0709HV. From what I found the casting number indicates it is 1969-79 350ci for a car, truck, or Vette. But then the suffix code indicates it was built July 09, 1965 and is from a 327ci Vette.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.Edelbrock Total Power Package 363 HP Small Block Chevy Top-End Engine Kits 2089 Top End Engine Kit, Power Package, Intake, Heads, Cam, Timing Chain, Head Bolts, SB Chevy, 363 HP-405 TQ, Kit Part Number: EDL-2089item 3 sbc 350 v8 engine motor block 3970010 4 bolt main mj21800 made in mexico gm 2 sbc 350 v8 engine motor block 3970010 4 bolt main mj21800 made in mexico gm 2. $699.99. item 4 sbc 350 v8 engine motor block 3970010 2 bolt main small block chevy 30 over sbc 350 v8 engine motor block 3970010 2 bolt main small block chevy 30 over. …The Chevrolet big-block is a visibly larger series of Chevy's V8 engines that were developed and used in the 1950s through the 1970s. Many engine blocks of the same generation look alike. Thankfully, Chevrolet used different block casting numbers to differentiate between the various castings. ... 3970010 Small Block V8 1969 302, 4 bolt ...The engine serial number in big and small Chevy engines is denoted by seven digits, each symbolizing a specific detail. Below is the meaning of each of the letters and numbers in the engine serial number: 1st letter = assembly factory. 2nd and 3rd digits = month of the assembly. 4th and 5th digits = day of the assembly.trying to get this old 1953 Ford F600 to fire up, but it's got an old GM 350 for an engine. I've been tryin to figure the wiring for the 10DN external regulator alternator as well as the HEI distributor. vin - F60R3H43201 model - STAKEEX scale weight - 8300lbs class - COMMERCIAL engine - 350cu.in (GM 3970010... 1968 327 or 1969-79 350)About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright ...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 if it simply states "Y"... this means Corvette.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.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.Find many great new & used options and get the best deals for 1969 Corvette 350 Camaro SS Chevelle Chevy Nova 4 Bolt Main Engine Block 3970010 at the best online prices at eBay! Free shipping for many products!Chevy Chevrolet small block V8 engine casting numbers - WaywardGarage.com - Hot Rods - Musclecars ... 3970010: 350: 69: Corvette: 4-bolt main, late 69: 3970010: 302 ...Edelbrock Total Power Package 363 HP Small Block Chevy Top-End Engine Kits 2089 Top End Engine Kit, Power Package, Intake, Heads, Cam, Timing Chain, Head Bolts, SB Chevy, 363 HP-405 TQ, Kit Part Number: EDL-2089GM announced that 39-year-old Dhivya Suryadevara will succeed Chuck Stevens as CFO in Se, chevy 350 dipstick location. I just bought a chevy 350 as a , chevy 350 dipstick location. I just bought a chevy 350 as a buil, The 3970010 casting was introduced by GM in 1969 and was used , It is a 3970010 four bolt block which sounds like it was produced from 69-79. It appears to be a higher nickel block, 350 sb chevy complete engine$199 gm 3970010 chevy engine block tyz corvette, camero or conv. cab 700r4 , Intake manifold with GM part number and winters snowfla, item 5 gmc 3970010 chevrolet 350 4 bolt main bare block w/, The 3970010 block casting number was used from 1969-1979.... But the , yes most all 3970010 are 350, but some in '69 were , HEI Distributor Upgrade Kit, 50,000 V Coil, Cap, Rotor, GM V8, Clear,, Small Block Chevy Suffix Codes: TBT - TJS. GM body de, Medicine Matters Sharing successes, challenges and daily happenings in, Oct 27, 2010 · 1968 3970010 327 2 bolt. This is a side post from my , SBC 350 V8 ENGINE BLOCK 3970010 4 BOLT MAIN SMALL BLOCK CHEVY , In the GM parts books, you had to look through each model ye, The Engine Block Casting code is one of the best ways to identify a C, 6269318. 454. 72. Holley. Rectangular port Aluminum. Chevy Casting Nu.