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3970014 - 3970014: 350: 2-Bolt or 4-Bolt: 3970020: 307: 2-Bolt: 3970024: 307: 2-Bolt: 3999289: 454: 2-Bolt:

Jul 28, 2010 · here is what I found on my own search. 3970014 350 6

small block Chevy engine casting bock by minuit10 . Years : Casting : CID: Main Caps: Comments: 1980-85: 140029: 350: 2: car: 1973-80: 330817: 400: 2Posted on Jul 30, 2008. SOURCE: 1987 Nissan Sentra diagram for fuel line routing. There are many online wiring diagram solutions, but the cheapest way to find your diagram is to purchase a haynes or chilton manual from the local auto parts store. Both have excellent wiring, fuel lines, brakelines, etc diagrams. I prefer the Haynes manual myself.A forum discussion about a 1971 Camaro SS engine with the code 3970014 and the VIN 350 2 bolt main short block. Users share their opinions, experiences and …3970014: 350: 2-Bolt or 4-Bolt: 3970020: 307: 2-Bolt: 3970024: 307: 2-Bolt: 3999289: 454: 2-Bolt: 3999290: 402: 2-BoltAdvertisement. street and racing 8 Cylinder, SBC Complete for sale today on RacingJunk Classifieds.Hemolytic anemia occurred in a 70-year-old female after a five-day course of intravenous cefamandole. The patient's serum contained an IgG antibody which was reactive with red blood cells which had been coated in vitro with cefamandole but not with uncoated cells. An in vitro assay of allogeneic mononuclear phagocytosis of cefamandole-coated ...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.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.Second, The 3970014 block was cast and used to build engines at the Tonawanda engine plant (No records indicate that any of these blocks were actually built at Tonawanda, so it was probably assembled at one of the other four plants.) These engines came in 2 and 4 bolt main configurations for Camaros (70-300hp, 71- 245hp), Corvettes (early 73 ...3970010 350 69 Corvette late 69,4 bolt main 3970010 302 69 Camaro Z/28,Late 69, 4 bolt main 3970010 350 69-79 Truck 2&4 bolt main 3970010 350 69-79 Pass,Chevelle,Camaro,Nova,MonteCarlo 2&4 bolt main 3970010 350 70 Corvette 300,350,370 HP 4 bolt main 3970010 350 71 Corvette 270,330 HP 4 bolt main 3970010 350 72 Corvette 200,255 HP 4 bolt main ...For your review is a 1970-73 SBC four (4) bolt bare block casting #3970014, listed as a LA built Camaro. The casting date is D 7 70 and the VIN #'s 10A151785 T04090NJ. The main bearing bores measure 2.644"/2.645" measured with an I.S. bore gage, confirmed with an O.S. Mike.I have a block stamped 3970014. I haven't dropped the pan to see if it's a 4 bolt or not. I'm wandering if this was included in the high nickle blocks or not. I know 010 was stated to be of high nickle. It states that this block was used in the 70-73 camaro and I figured that gm was still producing good hp engines in those years specified.11400 posts · Joined 2002. #4 · Aug 29, 2004. Look above the casting numbers and you`ll see "hencho en mexico" meaning made in mexico, this is a target master 4 bolt main block. Honestly, I don`t like these blocks, some have problems out of them and some don`t, some liked to crack while others were just made of poor materials …View credits, reviews, tracks and shop for the 2012 Vinyl release of "The Blanco Sessions" on Discogs.What year is a 350 Chevy engine with casting number 3970014? 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 ...1969 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.In this video I demonstrate how to replace a 2-piece rear main seal on a small block Chevy engine while still in the chassis of the car.Find many great new & used options and get the best deals for Chassis ECM Totally Integrated Power Supply Fits 12 DURANGO 3970014 at the best online prices at eBay! Free shipping for many products!3970014: 350: 2-Bolt or 4-Bolt: 3970020: 307: 2-Bolt: 3970024: 307: 2-Bolt: 3999289: 454: 2-Bolt: 3999290: 402: 2-Bolt: Also of Interest: Classic Vehicle Identification Sheets; Ford Engine Block Casting Numbers; How To Calculate Block Height; How To Determine Your Chevrolet Water Pump Type ~ Long or Short;CASTING# SIZE: YEAR: MAIN CAP BOLTS. NOTES: 140029: 350: 80-84: 2: 330817: 400: 72-80: 2: 355909: 262: 75: 2: 355909: 305: 76-79: 2: 360851: 262: 75-76: 2 Monza V-8 ...The 1970 Chevrolet Nova was offered only as a two-door coupe or four-door sedan. Basic Novas had a 90-horsepower 153-cubic-inch four-cylinder engine, a new 155-horsepower 250-cubic-inch six, or a popular 200-horsepower 307-cubic-inch V-8. Jul 25, 2019 •.came in 72-74 camaro, nova, chevelle, impala. the block could have came machined for two or four bolt mains depending on the application of the particular engine. they also came with different strokes. the block you have is the well known mass produced chevy 350 block. if you are going to rebuild it, have the it line bored. the blocks were produced so fast and so many, the manufacturers didnt ...I have located a low milage 350 with block number 3970014 can anyone tell me about these. hp? 4 or 2 bolt main? etc? thanks guys. Early large journal 4" block. Produced in both two and four bolt mains. Cast in Saginaw, Michigan and machined/assembled in Flint, Mi. Companion block to 3970010.The block casting number (drivers rear at back of block) is 3970044. No one seems to think this correct, but that is what it is. We do not know what the engine came out of. The number on the passenger side of engine on the pad are 14L192810 then 10219CMA. I believe it is a 350.CASTING# SIZE: YEAR: MAIN CAP BOLTS. NOTES: 140029: 350: 80-84: 2: 330817: 400: 72-80: 2: 355909: 262: 75: 2: 355909: 305: 76-79: 2: 360851: 262: 75-76: 2 Monza V-8 ...Hi, I have no idea what I've got here The block is 3970014 350ci 2 main bolt 3 speed automatic Partial VIN 12437 Nor Yy From what I understand no SS came with a 2 main bolt, and most sites I've looked at say the block was used in later applications. I also couldn't find much pairing these with the auto 3 speed from factory.I think we have confirmed that the engine is not a 307, but rather a '74 350 2bbl confirmed by engine casting code(3970014) and the assembly code(T0104CMA). The CMA suffix was used for a '72 307 and a '74 350. The flywheel had 168 teeth and the starter had a 350 offset bolt pattern, instead of the 307/153 tooth combination."Block #3970014 This could be considered a mystery block. There is no Chevrolet documentation from the Flint Michigan Engine Plant to show that this block …After several applications of aircraft paint remover and lots of cleaning, I was able to decipher the block number as 3970014, which, according to Mortech, is a 350. Thank you to everybody that got involved and replied to me. Save Share. Like. D. DHMag.Delco AM radio (non-op). Call (830) 629-4843 for more information on this 1974 Chevrolet Nova for sale in our inventory. Hit the open roads in this 74 Nova for $36,900. Engine. 350 cui Chevrolet Small Block V8 engine (casting# 3970014). Automatic TH350 column shift transmission. 10 bolt rear end.Jul 24, 2010 · I see another source of the 3970014 block being a Tonawanda-built engine but destined for the LA Camaro plant. I suppose it could be possibile for a CNN coded 3970014 engine could have be inadvertenly shipped to another plant and installed in a Chevelle.The engine casting number is 3970014 The number stamped on the deck is T0219CNJ The heads are 3947041 It has flat top pistons If I'm reading up correctly the CNJ specifies 69 or 70 manual trans 300hp 4bbl. This is the original engine, the other stamped number on the block matches my vin. The heads indicate 64cc chambers.U can check your block casting number on many w/s to see what year it may or may match - #3970014 would be a good one for ya. BTW stamped numbers can always be restamped and there are plenty of '75 blocks still availible so u could take this as far as u want to go with it.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.Financial journalists have been sharpening their stock market superlatives. The word “biggest” is carrying a heavy burden. As worry about the new coronavirus cascades through finan...Casting #3970014 and a stamp code of #T0611CNN which I believe was assembled in Tonawanda plant on June 11th... For sale is a 1970 Chevey 350 small block. Casting #3970014 and a stamp code of #T0611CNN which I believe was assembled in Tonawanda plant on June 11th with 250hp. It ran pretty well when I pulled it...Casting # Years made Valve Size HP levels used for Chamber Size / Notes; 3782461: 61-70: 1.94/1.50 & 2.02/1.6: 250-375: 64 CC Chambers No bolt holes These are the double humps.3970014 casting cam question. Jump to Latest Follow 3K views 1 reply 2 participants last post by GoneNova/406 Dec 3, 2004. M. malibu68 Discussion starter 230 posts · Joined 2004 Add to quote; Only show this user #1 · Dec 3, 2004. i need to know the cam specks for this engine, all i know it that the casting number is 3970014 and it has …When I'm lying in my bed at night I don't wanna grow up Nothing ever seems to turn out right I don't wanna grow up How do you move in a world of fogI have a 1970 -to-1972 ,350 2bolt block.Casting#3970014. I need to find out what oil pan to buy.I bought a pan from Summit(G3500P) which is for MOST pre1980 SBC.The pan does not set down on the block,it has about a 1/2" gap regardless of what type of seal I try.This shortblock came with a chrome pan that seems to fit fine but I'm afraid …The 3970014 block had late production 69 usage in 350 engines. (It was also used in 1972-1973 applications.) The 3959512 SB casting (not to be confused with the 3963512 427 casting) was mainly used for warranty / service blocks, though it did have very limited production usage in 69 engines. It is a 4" bore block, thus could have 302, 327, or ...These numbers are from the front pad. 21B650536 K04 17 CTL. This block is a 2 bolt main and has the 3970010 cast in the back of the block then up above that is K 9 cast into the block. I looked up the head casting numbers 3998920 and it said they are 72-73 350. The intake valves are big on these heads.Jeff Smith: On most engines, it’s fairly easy to tell the difference between internal and external balance. The quick answer is that if the rotating assembly is externally balanced, it will have an offset weight on the harmonic balancer and the flywheel/flexplate. If the engine is internally balanced, the harmonic balancer and the flywheel ...burkej62 Discussion starter. 1865 posts · Joined 2007. #3 · Mar 7, 2007 (Edited) Odd... one of the stoies i was told was 305 , 283 but never 350. I will get more more numbers... I did a quick search and this is what I got , 1970-73 3970014- 350 200 300 2/4 LA built Camaro. A 350 with either a2 or 4 main bolt , with either 200 or 300 hp. Odd ...Question about Cars & Trucks. 1 Answer. I have a GM flywheel # 3873455N Is this a 10.5 or 11 inch flywheel.? Also suffix number V0601ABT, this is a 0010 block. It's in a 73 camaro with a Saginaw 4 speed.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.My engine casting number is #3970014 it is a 2 bolt main, 350 with I heads casting number #462628. during inspection there's no cracks or splits or or fractures on my head that the gaskets were immaculate good condition last time I changed them was probably three years ago.Small block Chevy engine# 3970014 and Transmission # 19D407362 Can you tell me the CDI of the engine and year. What year - Answered by a verified Chevy Mechanic We use cookies to give you the best possible experience on our website.1964 corvette: block..a casting code of 11 GM 3956618 at the left rear. I have a 1964 corvette with a non original motor. The block has a casting code of 11 GM (NNN) NNN-NNNNat the left rear and a stamp of CE 932482. … read more. Hammer Time.I asked about the engine casting number being 3970014 as the 3970010 which is far more common in '77 would not have had a two digit code for the year in the casting date, only a single digit. The 0014 blocks were cast in Tonawanda NY and shipped to Flint for final assembly.Notice the rear main seal on the top photo is one big seal whereas the bottom there is no seal shown but it fits over the ridge in the back and could leak at the joint (which is why you off set the seal about fifteen degrees and use sealant). Found a two piece seal photo. The seal is the blue bit. Big Dave.1969 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.Casting Date Small block casting date is located on driver side rear of block on flange forward of bellhousing. Big block on the right side of engine above the oil pan rails. Casting Date Example: E038 - (E = Month, 03 = Day, 8 = Last digit of model year (1978)). Month: A = Jan, B = Feb, C = Mar, D = Apr, E = May, F = Jun, G = July, H = Aug, I ...The Insider Trading Activity of Hanna Mark Christopher on Markets Insider. Indices Commodities Currencies Stocks1969 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.Block 3970014 Casting date appears to be T3 Front pad is stamped T0418CKL Head casting number appears to be 3998993 Thanks, Ed . Save Share. Like. Sort by Oldest first Oldest first Newest first Most reactions. HwyStarJoe.3970010 350 69 Corvette late 69,4 bolt main 3970010 302 69 Camaro Z/28,Late 69, 4 bolt main 3970010 350 69-79 Truck 2&4 bolt main 3970010 350 69-79 Pass,Chevelle,Camaro,Nova,MonteCarlo 2&4 bolt main 3970010 350 70 Corvette 300,350,370 HP 4 bolt main 3970010 350 71 Corvette 270,330 HP 4 bolt main 3970010 350 72 Corvette 200,255 HP 4 bolt main ...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.Master. 405 Answers. Re: 1993 Camaro v6 3.4 lt. The cheapest and easiest ways to increase HP is intake and exhaust. Swapping a whole motor is a lot of work that comes with many headaches. A good aftermarket cold air intake will add 5-10 HP and you can bolt it in quick and easy. And putting on a good free flowing exhuast can add up to 25HP.According to Nastyz28.com, the HA code is a one year only and was made in 1969 for the 350 SBC 300 HP SS Camaro. The casting # is 3970014. According to Mortec this engine was produced from 1970 -1976. The VIN # was virtually impossible to read. I scraped off some yellow paint and found the last 3 numbers.C1 & C2 Corvettes - Block 3970014 - I'm getting ready to remove this engine and install a dated 283. I was wondering if anyone could give me details on what it came …A user asks about the RAI 1238 code on a 350 block casting 3970014 used in a 68 Chevelle restoration. Another user replies that it is a rebuilders id stamping and that the block was used in many vehicles.Details for 3970014; Manufacturer: Chevrolet: Category: Engine Blocks: Type: Small Block V8: Date: 1970-1975: Notes: 350, 2 bolt or 4 bolt: Added to DB: December 20, 2010 …In 1968, the 283 CI was replaced with a 307 CI. In 1969, the 327 CI engine was enlarged to the 350 CI. Those are the options for those years, small block v-8s: 283, 307, 327, 350; Big block v-8s were the 396 CI, and 402 CI. An old chevy guy might be able to tell you what engine you have, by looking at it. Mar 16, 2015 •.MCC # 843. Like. DZAUTO. 11349 posts · Joined 1998. #5 · Sep 21, 2010. Only two Chevy engines were externally balanced, SB400 and dirivatives, such as 383 and 454BB and dirivatives such as 468, 496, etc. Those engines require BOTH a balancer and flywheel with weight added to one side for balance purposes. ALL other Chevy V8 engines (WITH A 2 ...While 6 different bore size blocks have been produced, the small block engine can be classified into 3 bore sizes and 3 main bearing sizes. 283 blocks (3.875" bore, 2.3" main), 302/327/350 blocks (4" bore, 2.3" or 2.45" mains), and 400 blocks (4.126", 2.65" mains). In 1968 the main bearing saddles were increased in size from 2.3" to 2.45".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.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.A forum discussion about the differences and similarities between two Chevy block castings, 3970014 and 3970010. Learn from experts and enthusiasts about the history, performance and myths of these blocks.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,The date 1973 production began is also a factor. Start dates varied year-to-year. Some new models started in the 3rd week of August. Other years, it was early September. VINs started with 100001. This '73 would be #2631, which isn't very high. There was also a change in the 1973 Nova body from 1972. The 000008 is the Fisher body number.1932 Austin Bantom Additional Info: 1932 Austin Bantam Beautiful paint, aluminum seats with new snake pattern seat inserts, black carpet, stereo, tilt windshield, wiper motor, seat belts, floor mats, B & M floor shifter, fiberglass and aluminum body, metal nose, 350 SBC, double hump heads, roller rockers, solid lifter, electric fuel pump, 350 transmission, 3000 …See Figures 3, 4, 5 and 6. Remove the lower seat cushion by pulling straight up on the front portion and disengaging the clips. Then hinge the seat upward to release the rear clips. Fig. 3: Pull up on the front of the lower seat cushion and disengage the clips. Remove upper rear seat back-to-chassis bolts.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.Decoding Rear Axle. 1970. The 1970 Monte Carlo is a year that is unique to the first generation of Monte Carlo's. It is the only year that Chevrolet had the three-digit rear axle ratio identifier "CCH for example all of them started with C for Chevrolet" and the only year that they had a month and day code "01 23 known as January twenty third" for the Monte Carlo.Jul 10, 2019 · 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.Take the headgasket and piece of cardboard about the same size. Using the headgasket as a template, mark each of the bolt holes on the cardboard with a sharpee marker, pencil or pen. Also outline the headgasket and mark the top of your drawing. Now starting from the center bolt as number 1, move either to the right or left, up or down to the ...3970014 : 1970-75 : 350 : 2/4 : 3970014 : 1968-79 : 350 only : 200 & 255 : 2/4 : 6259425 : 1969-76 : 350 : 2 : 10036033 : 350 : 4 : Goodwrench crate motor, 2-piece rear seal, …May 8, 2011 · I've had this extra 350ci engine just sitting around for a while now, and finally took the time to look it over a bit and I'm wondering is it a good engine to work on or not. Here goes the info I pulled from it: Block casting number: 3970014. Crank casting number: 3932442 F257 GM68. Cap castings: (4 Bolt) 3412 GM148 (x2), 3412 GM160.The classic 350. Our 350 HO is assembled with all-new parts and high-flow heads, giving you more power than just about any production-spec Small-Block ever installed at the factory. PART NO. 19355662. 333 HP @ 5100 RPM. 381 LB-FT @3700 RPM. 1. 2.I bought a 1961 Chevy Apache that the man I bought It from said had a 350 but after look at the casting number I cant tell if is a 307 or 350. The casting number is 3970024 Or 3970014 I cant see the last to numbers very well. Is there a other way to see the different between them.3970010 350 69 Corvette late 69,4 bolt main 3970010 302 69 Camaro Z/28,Late 69, 4 bolt main 3970010 350 69-79 Truck 2&4 bolt main 3970010 350 69-79 Pass,Chevelle,Camaro,Nova,MonteCarlo 2&4 bolt main 3970010 350 70 Corvette 300,350,370 HP 4 bolt main 3970010 350 71 Corvette 270,330 HP 4 bolt main 3970010 350 72 Corvette 200,255 HP 4 bolt main ...How do I find out what motor I have by these numbers 14R468592 id # (NNN) NNN-NNNNcast #. Answered in 6 minutes by: Chevy Mechanic: Greg A. Greg A, Master Troubleshooter. Category: Chevy. Satisfied Customers: 14,487.3970014 350 68-79 200-255 car & Truck 2 & 4-Bolt Now check these other locations for engine id ,etc . Save Share. Like. 1. 1971ssnotorig Discussion starterQuestion about Cars & Trucks. 1 Answer. I have a GM flywheel # 3873455N Is this a 10.5 or 11 inch flywheel.? Also suffix number V0601ABT, this is a 0010 block. It's in a 73 camaro with a Saginaw 4 speed.The block casting number is stamped on the left front of the engine block, usually above the vibration damper. It consists of 3-8 numbers or letters that indicate the manufacturer, displacement, and date. Common GM block prefixes include: V codes (e.g. VIN code) for small block V8s. Y codes for small straight-6 and inline engines.The partial VIN code you give 14R433474 breaks down as: 1= Chevy. 4= last digit in year, the code CMR was used in 74 (to verify find the date cast on the block) R= Final assembly Arlington Texas. 433474= last six digits in VIN from vehicle engine was installed in. I think the Texas plant produced B-bodied cars, Caprice, Impala etc.2,309 Answers. Re: What do you set the timing at on a 69 chevy 350. Diaconnect the vacuum advance, and loosen the distributor hold down bolt just enought so you can turn the distributor, at idle turn dist, to advance mark on the harmonic damper to spec, either found on a sticker under the hood of from manual, need a timing light, tighten dist ...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.C3 Tech/Performance - Engine Date Code 1977 c3 - I have a 1977 L48 Automatic trans. The books say only engine date code 3970010 was used for 1977 corvettes. I have date code 3970014, and yes the numbers on the front pad match my VIN. It is a CLA with date code 3970014. Wondering if someone can help me understand the...TXRebelSS Discussion starter. It's a 3970014 casting, , The block number - in this case 3970010 - is not the same as the block alloy casting codes (010, 020) , Jan 22, 2013 · All SB Chevy engines with a 1-piece rear seal are internally balanced. They are equipped with , Yes, Please make this my home page! Small Block Chevy Bore & Stroke Specifications. *Production of 305 car engines, Casting number on rear of block is 3970014 It has a pcv valve co, What year is a 350 Chevy engine with casting number 3970014? 3970014 350 69-7, 1 - V0303TDR (yrs 1970-1973) 3970014 350cid 4bolt main (LA Built Camaro) 3 - V0913TYZ (yrs 1969-1979) 3970010 350cid, Company Website. (800) 964-1553. (253) 370-8182. Become a User, G, New fuel and brake lines at 118,000. New fuel tank, and Spectra , Content creation isn't easy. Luckily, there are plenty of free ap, 1954 Chevrolet 3100 Pickup. VIN: H54N022788. This is a s, Here are the next targets for this energy name that just posted , I don't know if there are any other significant eng, Trick Flow® R-Series Intake Manifolds for Small Block Chevr, "rebuilt 350-all new kit parts bored .030-.467 lift c, Received 62 Likes on 42 Posts. My point is that i was sure that the , There is nothing special about the 487, 487X heads. They a, CorvetteForum - Chevrolet Corvette Forum Discussion. C3 Corvettes, .