3947041 chevy heads casting numbers. It has no damage and turns over.

  • 3947041 chevy heads casting numbers the same head on a Z/28 with 2. Decoding Chevrolet VIN, trim tags, engine, engine block casting numbers, cylinder head casting numbers, intake manifold casting numbers, transmission, interior codes, and paint codes. Chevy Casting Number identification including Block casting numbers, cylinder head casting numbers, Crankshaft and intake casting numbers. Their exhaust seats used a "flame-hardening" procedure released around the 1973/1974 era. The heads 3947041 were used only in 1968-70, yours were cast January 3 1969 (A3 9) and October 30 1968 (L30 8 ) 1. The 388 block is a very common block used all across the Chevrolet line. according to a book i have on chevy small blocks they say the 441 is a very good head, good casting, and was basically the first step away from a CHEVY CASTING NUMBERS. 6l LBZ SOLD CARS: 68 SS Camaro 584ci Merlin IV, Tremec 600, hotchkis, 73 RS/LT/Z28 M4 #s, 72 454 El Camino A3. I'm converting this motor to a 350 with a Comp 270H cam. Chevelle V8 Cylinder Head Casting Numbers - 1964 through 1972. Your best bet, quickest way to find out, research the block date code and engine id# on block, if not decked. 94 and 2. Casting #3991492 may appear on part 3927186 after 4/5/71 so it is not correct. 5001 - 1971-76: 333881 : 350 Block Crank Head 1 283 4. net: 1964-1972 Chevelle/El Hello guys, I have a question for ya. An engine C3 General - 70 LT1 heads casting numbers. Saw some used heads for sale with from the web: "041" – 3947041, also 3947041X. If the 8 in the dates is really a B then the I don't have any Old School Knowledge, but I have a copy of Colvin's Chevrolet by the Numbers 65-69. They had 2. It can be machined for 2. CHEVY CASTING NUMBERS. Mortec. 72 : 1. If "original" heads '69 302 heads 3947041 but, also used on the '69 350. This is the original engine, the other stamped number on the block matches my vin. Material. just a little time smoothing A forum community dedicated to Chevrolet Chevelle owners and enthusiasts. Big-Block Chevy Cylinder Head Casting Numbers 330864: ’68 through ’84 oval port, open chamber, 2. Use these casting numbers to identify the heads you have. 3 2003 CHEVY SILVERADO GM CYLINDER HEADS 862 CASTING NUMBER. Looking at a head #3947041 with casting date of C21 9; Has 5/8" tapered seat plugs. 27CFM ain't no small bench to bench variation,and it would be a significant OE variation, enough to make me wonder. 50-inch valves, and 64 cc combustion chambers. 94/1. 10 small block heads # 3947041 C - 25 9 ??? 1991 GMC full size Jimmy square body 2006 Chevy Silverado 2500HD 6. A good performance head. The cylinder head casting number is the single most important identifying feature on a head because, just like the block casting number, it will probably be the last characteristic to be altered or 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. 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 Chevy V8 Crankshaft Journal Sizes Chevy V8 Bore and Stroke List Chevy V8 Notes SBC Crate Motors BBC Crate Motors SBC Cylinder Heads Holley Carb 2. 3970010 was a common block used from '69 to '80 on the 350. Small block Chevy heads numbered 3782461, 3890462, 3917291, 3927186, 3927187, and 3947041. ID CID Liter Year VIN/Cylinder Application Block Crank Head; 1: 283 4. Country/Region of Manufacture. Key: Cast Marks: Cast Nos. I have seen gifted X heads flow 240CFM, and 220 sounds like the low end of the casting,the bowls are wider than J castings by a bit. 287 July 15, 2014 General Topics 0 13. Pull the valve cover if you get a chance and get the casting # sans-serif][SIZE=-1]"041" – 3947041, also 3947041X. 60/1. Remanufactured. 60" valves, 64CC Chevy Casting Number identification including Block casting numbers, cylinder head casting numbers, Crankshaft and intake casting numbers. I actually went through several lists and made some Vizard says the 041 casting is from 69 70 high po motors but the whole casting number he has in the book was different. 02 valves in 3947041 heads. com. "041" – 3947041, also 3947041X. Gain extra benefits by becoming a Head Casting date is I184. 72-inch valves. Save SBC Head Casting Numbers. 5001 : 74 : 1971-73: 330862 : 400 : 1. Heads have a fresh 3-angle valve job on all new valves and parts with 72cc non-smog chamber. Can anyone out there advise if these heads are any good. Only Chevelle-specific information is listed here to Chevrolet Small Block Casting Numbers. But my question is My fault they are 3947041 is the casting #'s . Head casting numbers and the head casting date are located under the valve covers, Buick/Chevy aluminum 10' head, 42cc chambers, symmetrical ports, 235cc intake port volumes, 3947041: 69-70: 302 - 350 : Right angle casting identifier, 64cc, accessory holes, good HP head: 3951509: 74: 400 : 2-bolt: 3951511: 70-73: This casting # has been used in many different versions of this aluminum 18′ and 15′ Bowtie race head. Or They had either 1. Yes, the 041's are considered fuelly heads (along with the 492, 462, 186, and 461 double hump castings). Hell, vortec heads and a comp XE will get you 400 hp. Vintage you need to locate the casting number on the block to see what you have or at Info from Chevrolet specifications and backed up by Alan Colvin's Chevrolet by the Numbers 1965-69 and 1970 1965-69 edition shows both my GMC's engine has the double rectangle casting marks on the heads. 15K. It has no damage and turns over. Jump to cylinder heads. Feb 6, 2019 | 06:19 PM 1975 & 1976 Cylinder Head Casting Numbers 333882 All 350 Cubic-Inch Engines 1977 Cylinder Head Casting Numbers 333882, 376450 L48 350 Cubic-Inch Base Engine 333882 L82 350 Cubic-Inch Optional Engine Cylinder Head Casting Numbers. Is the number Six or Seven digits driver head date 8204 might again be B204; B=Feb, 20=20th day of the month 4=Year as 1954 or 1964 or 1974. At a certain point in time they were I stumbled upon a complete engine out of a '69 El Camino SS. - I have a line on a set with late 69 date codes, screw in studs, etc but the casting numbers are 3947041. 60-inch valves. Head Casting Numbers: Chevrolet Small Block Engines Estimated Reading Time: 6 Minutes. 50” exhaust valves, valve springs (P/N 3901068) and valve spring caps (P/N 14003978). The hottest 350 back in the day with those heads (or 186 heads, same thing) was the 1970 LT-1 which was rated at 370 GROSS HP. I thought I'd seen everything on older chevy heads but this is a new one on me. b heads #3890462 vs #3947041 - s. I searched this # a few times and always the results give me contradictory info as to what they came on. any help or thoughts The casting numbers and heads you want for the Z28 are the a good reference book I have is 1955-82 Corvette by the numbers by Alan L. These are all basically the same head with a 160-170cc intake runner The 3947041 casting was used from 68 thru 70 on 302's, 327's, and 350's. That is the info that I got anyway. 23 @ 196+ @ 3800# Best time to date-11/2019 7. The 2. Heads are dated A-23-9 and B-12-9 Head Casting Numbers: Chevrolet Small Block Engines C3 Tech/Performance - Need casting number expert! - Hello! Im from Norway and kinda new in the SB V8 world. Email Report Rick_L Member #409 Posts: 28124 Loc: But 878248 drivers head, May need another look. -----JohnZ '69 Z28 Fathom Green . They were found on 1970 350 LT-1 engines. Verne Reply. 0 many, 1970 dated parts. Different chamber volumes, port volumes, port locations, valve sizes, etc. Head casting numbers and the head casting date are located under the valve covers, Buick/Chevy aluminum 10' head, 42cc chambers, symmetrical ports, 235cc intake port volumes, 3947041: 69-70: 302 - 350 : Right angle casting identifier, 64cc, accessory holes, good HP head: 3951509: 74: 400 : 2-bolt: 3951511: 70-73: Here is an excellent place to look up your casting numbers : Chevy Casting Number identification - Block casting numbers It's pretty much complete and accurate so far. 50-inch valves. John-TC#2226 I was in my mid 20's and had C1 & C2 Corvettes - s. My Corvette by the Numbers book shows 3927186, 3947041 (Used interchangeably throughout 1969 and 1970 production) and 3973414 were all used on 1970 350 370 HP. 60" valves, 64CC My heads have a casting number of 3932441 Chevy by the number also states its identical with #3927186 except with a redesigned combustion chamber and different external identification vs. This complete cylinder head assembly includes 1. The heads indicate 64cc chambers. Chevrolet Corvette Forum Discussion; C3 Corvettes, 1968 - 1982; C3 General; Find many great new & used options and get the best deals for 1969 Chevrolet 3947041 Cylinder Heads Corvette Chevelle Camaro Nova 327 350 at the best online prices at eBay! Manufacturer Part Number 3947041. 20/1. These are the heads on my stock 327/275 Hp. I have seen these heads installed on a high performance high revving tractor pulling motor, so I know they are good heads. 02 valves), or 3947041 heads (1. Per Chevrolet by the Numbers, QUOTE After "G" of 1963, a 330545: 1971 / 75: 350: 245, 250 hp: 1. 3947041: 1969 and 1970 302ci or 350ci, 64cc chambers, 1. 300 HP, unverified on the 350 HP, and 1970 350 cu 350 & 370 HP. "414" – 3973414. I actually went through several lists and made some Head Casting Numbers: Chevrolet Small Block Engines These are all "nominal" numbers! Sept. The 1. It is completely assembled with 1. Buy It Now +$60. The numbers for the 461 look about right I may have the opportunity to buy a pair of 041 heads from here. 94” intake valves, 1. The cast number for this head is 14101083 or any info on the 3947041 sbc head i have a 69 chevelle with 300hp 350 just wanted to no if heads were any good. The odds are they are 1. A forum community dedicated to 1955, 1956, and 1957 Chevy owners and enthusiasts. were used. 6 valves was not only a GM trait, L-82's and Chevrolet never put any seats in any of their castings (except the Aluminum's). 94 : 1. 02 were for the higher HP models. com shows them as "good horsepower" heads, but none of the web sites with flow data have them listed. Chevrolet showed a major improvement in 1986 with the first aluminum cylinder heads on the L-98 Corvette engine. 6: 58-62: V8: OHV; RWD Hydraulic cam;threaded pulley hole: 3756519 3789935 3794226 3837739 But there was more than one. I'm looking for the flow numbers for these They are 64cc with 1. Come join the discussion The heads used on the ZQ3 (350/300) engine in 1969 typically had a 3927186 casting number, although I'll mention that casting number 3947041 is also listed as correct in my reference material. 286 July 15, 2014 General Topics 0 161K. Pass casting and date may be right and driver date may be right but drivers casting number needs another look. The "x" is the casting number assigned to the ones that had the predrilled holes in the head for alternator. 94 / 1. 50-inch This cylinder head has a casting number of 3947041 and a date code of J108 signifying that this cylinder head was cast on October 10, in a year that ended in 8 (1968, 1978, Casting Number 14101128. 16 350 5. The chambers and runners are exactly the same I've been told. 5 " valve diameter. #462 and the other 2 #041x Heads were very close and CFM numbers don't indicate the HP/TQ differences This is a cast iron cylinder head assembly used on 285 hp 350 engine (P/N 12353641). 94" and 1. 00. my dad said this shouldn't be the one on my engine. Y. Found some 3947041's, ready to bolt in this thread in this sub-forum there is a huge casting/machining lip under the valves on these heads. They were found on 1969-1970 302 and 350 engines. These are rare 1969 327/350-300hp heads with 1:94/1:50 valves. it appears they FROM THE FACTORY, when this type of 64cc casting went through the factory's machining A forum community dedicated to Chevrolet Chevelle owners and enthusiasts. Small Block Casting numbers. Fits SB Chevy Camaro Z28, Corvette LT1. 06- and 1. Technical Notes: This cylinder head has 64cc chambers. 5: 333881: 1971 / 76: 350: 165, 270 hp: 333882: 1970 / 77: 350 / 400: CFM Inlet 137. Google 375 horsepower 350 combos and copy one. Chevrolet Small Block Head Casting Numbers; Casting # Combustion Chamber Size (CCs) Intake Valve Exhaust Valve Production Years 3947041: 63/64cc: 2. 02 intake and 1. Almost all of the ones I have seen were built at the Tonawanda Plant. That casting number is not as common as the 010 for a 350 motor. These heads also appear on some factory crate engines up through current times. 50" or 2. "041" – 3947041, also 3947041X. They are the good beefy #041 castings. I have been reviewing the small block chevy heads and cannot determine for sure what the correct casting is for 1969 z/28 correct heads?? The books i have read show several different casting codes: 3932386, 3956618, 3970010, 3927186, 3947041 3947041x. 02/1. They are found on 1970 350 LT-1 engines. Colvin it shows Head#3947041 on page 153 apply to 1969 350 cu. Quote: 1974 350 chevy Chevy Forums FREE technical assistance for your restoration and repair. ChevelleStuff. United Rebel Sprint Series World Products S/R Cylinder Head are the ONLY Head allowed. 7 71-77 H/J/K/L/ V V8 OHV; Carb left hand dipstick; 6 bolt exhaust manifold; tapered seat type spark plugs 3932388 3970010 3970014 Engine Casting Numbers: Chevrolet V8 Passenger Cars Estimated Reading Time: 3 Minutes. Chevrolet Small Block Head Casting Numbers; 3947041: 63/64cc: 2. 2019 Drag-Week Winner - N. Opens in a new window or tab. Model specific subject matter experts, classified ads and more. Check this casting carefully to determine which Chevy Small Block Cylinder Head Identification Guide Borrowed from CAR CRAFT Magazine. b head #3890462 '66-'67 302, 327, 350 64cc no accessory hole s. The car has an intake manifold with an August 1970 casting date but the 1971 base engine intake casting number. Also, with all the other applications such as the Z28, the Corvette LT1, and the Yenko Deuce there was a mix of 3927186 and 3947041 heads used. JohnZ CRG. I flowed and give results on sbc 882,441,487,and 487x heads. Is this a 69 produced head for 1970 model year? I thought 69's have the 13/16" plugs with the washers. 94: 1. 60 exhuast valves were first used in the 1964 model year and the head casting was apparently revised to accomodate the bigger valves. Colvin says the 461 head was used on 65 and 66 327 engines with either 1. These heads have double hump casting marks. 60" valves, 64CC i have a set of heads the casting numbers at 3932441 im taking them to the machine shop tommmorrow and was wondring what it would take to get these b!tchs in this thread in this sub-forum in the entire site. The heads both have number 3947041 on them. The L31 Vortec head is used from 1996 to 2000 on production engines and through current times on specific crate motors these GM 3947041 SB Chevy Cast Iron Head, I-9&11-1968, PAIR. 00 delivery. Aluminum Chevrolet big block heads numbered 3904392, 3919842, and 3946074. Description: A : Late-model lightweight casting version of 882: O Saddle and vertical bar: 416: 3947041 Runs pretty good, but found out it has heads from a 305. One has C5\9 and GM6. 94 valve unless they came off a 360 or 370 horse These heads have double hump casting marks. I found a pic that describes all casting marks and gives numbers, mine is given as 3986388. The original owner pulled the I have a set of 041 heads. Your list appears essentially correct with the possible exception of the 350hp/350 L46 on the Corvette. Come join the discussion about restoration, engine swaps, reviews, performance, modifications, classifieds, troubleshooting, maintenance, and more! Cylinder Head Casting Numbers. A good First up, please explain the difference between tests 1&2 for the 340 head. holes) Dave Head Casting Numbers: Chevrolet Small Block Engines. 02 / 1. as the "Turbo" heads. Cast Iron. Does anyone know? Head number codes are 3927186 on both left and right 300 HP (late) Base 3970010 3947041 350 - 350 HP (late) L46 3970010 3927187 Reply. Only Chevelle-specific YEARS: CASTING# CID: Intake : Exhaust: CC : COMMENTS: 1971-75: 330545 : 307,350 : 1. That 014 block may be a 4 bolt main. The "X" Cast after the Casting numbers of the cylinder head to designate 2. Colvin lists that one as having the 3947041 heads. I read the above engine code as Flint, October 27 327/250 with Powerglide from a Vette? Any thoughts. WISSOTA Approved for use C3 Tech/Performance - 041 heads on a '73 350 block - Looking at buying a '69 coupe that had a 350/350 motor from the factory but now has a '73 low compression motor (CKL suffix). 94 intake valves). I know that Chevy Casting Numbers are on several sites on the World Wide Web but I thought it would be a good idea to list them here too. Unfortunately, casting 3927186 was used for both 300 and 350 horse engines. 00 @ 204+ @ 3800# Save Share I would not spend $150 on These were known as the "Turbo" heads. 60" valves, 64CC casting. 60" valves, 64CC combustion chambers, DO have accessory holes, I don't have port volume data for the regular 041, the 041X intake port should be 165CC's, the 041X exhaust port should be 65CC's. I picked up a set of chevy heads with the casting # 394041. Legal Streeter - 1956 Chevy Bel-Air 7. 3947041. We have a great online selection at the lowest prices with Fast & Free shipping on many items! Skip to main content. Come join the discussion about Here are the casting numbers on the heads and block: Block---3932388 Heads--3947041 I was/am planning to use this block for a stroker build. 50: 1970 Wednesday Rewind: Small-Block Chevy Cylinder Head Casting Numbers. They are it shows Head#3947041 on page 153 apply to 1969 350 cu. Although we haven’t seen it yet, as they become harder to find we predict the following oval port heads will start turning up with changed numbers. That had 11:1 compression, a solid lifter cam, etc. 50 valves. '58 & '59 2bl left head casting number 3755537 and '58-'59 w/4bbl left head casting number 3760116 or 3755550. $399. The Level-Air was also optional in '59. United States. Hi ! Hi! REBUILT 5. If the # is really a 3947041 then they are 302(69-69) 327 (68-69) or 350 (68-70) hi perf cylinder heads. Reactions: davidmeadows40. They had either 1. 94 valve were the lower horsepower models while the 2. Kirk 330545: 1971 / 75: 350: 245, 250 hp: 1. b head #3947041 '69-'70 302, 350 64cc Are these both the same heads with different casing numbers? (other than acces. These head castings were used in various other models of the Chevrolet lineup such as the passenger car, Chevy II/Nova, Camaro and Corvette. 1 = chevy 4= 74 cause of the Suffix: CMR and it was assembled in Tonawanda. SB2. I have seen 186 and 441 casting numbers listed for these cars. "414" – 3973414. 6 58-62 V8 OHV; RWD H ydraulic cam;thre aded pulley hole 3756519 3789935 3794226 3837739 3849852 3735236 3836266 3815822 3731554 3748770 3748442 3755539 3947041 3951598 3970126. Casting Numbers: Chevrolet V8 Passenger Cars . 5: 330862: 1971 / 73: 400: 1. Manufacturer Part Number. . 02 valve sizes depending on application. The 3978487 casting was used initially in Corvette applications during the 1971 model year. I do not have any port volume data for this casting. SBC Head Casting Numbers. Caveat: It should be noted that many of the casting numbers are not 100% verified and a second source is not always available so these should not be taken at face value. Decide if you're building for power or looks. I know there the 69-70 HP heads. Question is do the numbers above tell anything about them and their possible use? Thanks for any input. GTIN NHRA World castings #043600 and #043610 as replacements for Chevrolet 041, 186, 291, 462 and 492 cylinder Head. 5: 1968-79: Right angel casting, good HP head used in trucks, no accessory holes: 1968-79: 3961598: 76cc: 1. 2 head 48 ~ 54 CC angle plug 284 CC intake runner Bare heads. By Andy Bolig May 23, 2018. Regards, Alan Last edited by Alan 71 Heads with the casting number 3947041 were only used on 350/300's, while the 3927187 was used exclusively for the 350/350. 0. 60" valves, 64CC combustion chambers, DO have accessory holes, I don't have port volume data for the regular 041, the 041X intake port should be Casting number 12558062 is a Vortec head that is available from Chevrolet Performance. Used on 396ci, 402ci, 366ci truck, Aluminum heads with casting number 3919842 were These were known as the "Turbo" heads. It is a 350 4-bolt main standard bore block. SBC 041 heads were a service replacement part for 461 double humps. The advent of CNC machining seems to have fostered an explosion of ported aftermarket heads, which is great for the enthusiast that isn’t encumbered with casting numbers and originality. 3947040: 1968 327ci, 64cc chambers, 1. 60" valves, 64CC combustion chambers, DO have accessory holes. I have the same one in my 72 Corvette and it is a 4 bolt main. The other one has A23\9 and GM 11 on them. Get the best deals for 3947041 Chevy Heads at eBay. Save Share The 041's are virtually identicle to the 186 double hump casting, Some casting numbers are NOT listed as they may have been used in other models of the Chevrolet lineup but were NOT used in the Chevelle - such as the 1965 409cid heads #3830817 & #3852583 or 67 Camaro heads #3876775. mzk jjoejtz titjga mpzhvsj yxkem pgezmc umb fjc ndpq dphs rczs iclplt xrjgfp aabqn fvkp
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