454 heads casting numbers. 88) with some bowl work.

454 heads casting numbers 65@125mph 406 with home ported Dart 215 heads. Heads, after removing cover, I saw 14081045. TWO PIECE REAR MAIN OIL A pair of those heads on 454-496 CID with a 240-245ish solid cam,tight 3500 flash stall and some 3. Chevy casting numbers for blocks and heads for big block V8 engines. Closed Chamber - A good way to describe big-block heads is to categorize them as open or closed chamber. truck,1053,forging number 6223. 0:1/forged pistons. Dan . with automatic transmission. What is the casting date and does it have an application code stamped on the front pad of . 8 70-86 #346236 2-Bolt 9. 454/TH400 casting #361959. 427 . Mortec shows a 10069286, are they similar? I have always been a ford man so I am not sure did with their casting C3 Tech/Performance - Best head castings for 1971 454 - 049, 781 or 292 - I'm about to buy a 454 for a 71 Corvette and I have a choice or 3 different head castings - 049, 781 or 292. How would I find the compression ratio for these? Based on my engine casting number book, they could either be from a passenger car or a truck from 1973-1976, 454, 118cc chamber, 256/114cc ports . They both switched to open chamber. These puppies are nasty. " That head is like the old 820 '69 265hp 396 head with a different casting number. 2406 730: 426: RB: 63-65 Wedge & Max Perf. A very good block. I personally feel the smaller runner cross section will provide a Found someone selling these BBC heads - casting # 6272292. Much better heads for driving around on the street in a heavy car. 72-inch valves. They can be had for a reasonable price. 90-4. 8 73-90 #3963512 2 or 4 i am looking at building my first bbc. That would be the 425hp crate engine, very similar to the -71 Corvette 454. Compression: 11. Corvette Year Engine Type Block Cylinder Head Intake 454 - 390 HP LS5 (Early) 3963512: 3964290: 3955287: 3969869: 3880828: 38: mike stark from cfm said the 049 heads with bigger valves and pocket porting and casting clean up will flow about 300 cfm and support 550 hp easy. I really hate to pull the heads off the motor just to cc them. Save Share Reply Quote Like. I have a big block chevy casting # 10114182 and head casting # 10114156. Block: Four-bolt main bearing caps. I can't seem to get into Mortec's Big block section. Same as Cast or stamped numbers are used to help identify each Chevrolet Big Block engine. 8 73-90 #399289 2 or 4 Bolt 9. im using these heads on my 454 build up im doing now. Reactions: Z06vette. 1970-74 . 3999241 but has both 292/241. According to the casting number, (10069286), the blocks are from 90-91 vehicles. Right now we are limiting the listings to Chevy V-8 blocks, cranks and heads. This one appears to be in good shape, but it likely needs crack checking, pressure testing, new seats I have 2 454 blocks guessing 72 era. Got these heads on my 555 I purchased and can't really find any info on em other than they are 116cc ls6 replacement heads. OVAL PORT - Valve size 2. 454, 122cc chamber, 255/119cc ports . the block is a 69 396 and the heads are 72 casting #3999241 just whant to know with the right port work are these heads a option. 1968 SWB 454 + . Krazybones Discussion starter. Iron Heads. Which seem to be right at 11. Rocker Shaft brackets: Engine Oil: 25 ft-lbs. the plugs are really clean, 14081045 makes it an oval port 454 open 122 cc chambered head made from 1978-'87 Some of the 402 engines did in fact use the same casting number heads as the 454 after 1970 I believe. RECTANGULAR PORT - Valve size 2. 88) with some bowl work. My motor is stock 454 330HP. 4-Bolt IV Short deck. The casting number consists of 6, 7, or 8 digits without any letters. There are apparently many good heads around for the BBC. J26 77 is October 26, 1977 E12-77 is May 12, 1977. Same as Corvette 1971 , 454/425hp Camshaft should be: What kind of compression ratio would I have with the 14092360 peanut heads? I have no idea. Ok check my heads 3964290 = heads from an L-78 Now what the hell enging do I have? There is a casting number on the top of the block behind the driver's side head. 280 at the wheels is roughly 325 h. Can I achieve 500 hp with these 1401544 1975-87 454 truck Big Block Chevy Cylinder Heads Open vs. One common problem is header clearance. Can somebody explain if these heads will work well as opposed to some of the other well known casting numbers or the Dart and World (fairly low end price) from Summit/Jegs. And if you fit rasied port heads to the tall deck block the problem is compounded. Product Key I have the XAA code 454 in my Camaro. Manufacturer: GM: Cylinders: V8: Cams: OHV: Years: 91 - 99: Engines: BBC Cylinder Head Casting Numbers RECTANGULAR PORT - Valve size 2. p. sledneck307 Discussion starter. 4L engine that was the same PLEASE CHECK YOUR CASTING NUMBER TO MAKE SURE THAT YOU ORDER THE CORRECT HEAD. port heads. The problem is I am having problems decoding the Casting numbers for the heads; 454:4092360 366:473328 I talked to people from Jegs, and from Summit racing but neither could give me an answer. On the intake i found casting number 3964297 hi perf Big Block Casting Numbers. You should check your local want adds to see what Hi Perf BB heads are going for. It's cheap and pretty far gone so I am planning on pulling the motor/trans and parting out/scrapping the rest of it. One of the fun things about restorations and buying Chevy engines, blocks and heads is the casting number search. 25:1 or 11. I have heads that came off the engine I pulled from my 72 C20, it's stamped as a 3999290 block, but the heads are dual stamped too. Gen 6 works with better variety of heads. I was looking to make my 454 into a 496 or 502 at some point with around 650-700 hp with slightly less torque. Save Share Then the VIN trailing numbers The casting is for a 78-90 454 so, NO WAY its a LS-6 by birth The heads were used on 69-71 109cc chambers 396 thru 454 LS-6 had aluminum heads 3946074 . 14092360. Will sometimes cruise to a car show and such . 73 gears. On my engine i found casting number 14015445 at the back but on the side near the exhasut i found GM 7. These castings were originally equipped with 2. It is an L-78 with aluminum, closed-chamber heads. ratio. In running the 236 heads on my 454, ports are definetly smaller than the 781 or other big block heads I have, C3 Corvette Casting Numbers for Blocks, Heads, Intakes and Exhaust Manifolds. 25:1 CR, forging number - 3520 and 7416 Note 4: 4 in stroke, HD, 5140, LS-7, balanced for 12. 06/1. Block is 1401544. The guy I bought the motor from said it was an ls6 454 crate engine. L-88, See Note especially about cylinder heads, and also make the casting number lists as complete as possible for those of us that are Small Block Chevy Head Casting Numbers /port sizes, and notes. 5:1 CR, Chevy cylinder head Identification - Small block casting numbers, Big block cylinder head, camel back heads, double hump heads swapping these heads on your motor gives you an instan full point in cr to 9:1. Oil I’ve done a lot of research on Chevy head casting numbers. Install larger vlaves (2. 90-91 I believe the part list I´ve been offered a set of BB heads with this casting number, how they compare to 049 and 781's? the only difference seems to be they have 113cc ports 454 LS-5 heads, are they any good?, 454 engines equipped w/them cranked an advertised 365 hp. Buick; Chevrolet. Car is going to be mostly a track car for fun and to tinker with . 454: Q-jet: Iron Oval port: 235, 270Hp: According to the source I have 820 heads are 1971 402/454 oval port open chambered heads. Looking for Chevy casting numbers ? This is a very complete list of numbers to help identify your Chevy engine block, heads and crankshaft. 5 330545 73 350 2. 330570 427 truck,1053,forging number 6223 336782 1970-74 454 with automatic transmission 3879621 1967 427 L-88, See Note 1 3882841 1965-71 Aluminum heads with casting number 3919842 were factory cylinder Hello, I have a 454 engine in mij chevelle and i need some help with the casting numbers i found on my engine , intake and heads. Join our Forums! Join our Forums You may see a "5. 10051107 Big Block V8 454, 4 bolt, Bowtie, MkIV, 9. I am showing with 28 in. 1852 029: 413: RB: Truck &1962 Max Performance: 2120 529: 413: RB: 59-65: 2205 697: 413: RB: 59-65 Pass. We love Muscle Cars. One reason to swap these on would be to REDUCE the COMPRESSION RATIO. As new castings are released on late models keep your eyes open for the new numbers. 60 76cc Not sure they ever used a 512 block for the OTC LS7 crate motor, the following casting numbers are confirmed (XCH suffix). 3879621. The date codes on the heads (K17 8 and K25 8) indicate they in all likelihood were installed as a set. 88 exhaust. I finally got around to getting my "spare" set of big block heads out of hiding. The Block (454 2 bolt main) casting # on rear of block - 3999289 GM T12 Pass HI PERF number on deck T1012CWX 46448613 I think that the heads and block may be from a 1973 or 74 Chevelle / Monte Carlo 245 HP via the chevelle books I have. My head #14081045 is also exactly the same & they are deff peanut port heads :sad: . Yours were cast on October 6th, 1974 and were used in the 1975 full size or Corvette. Looking to clean out the garage See less See more 3 10. I'm looking for a good street engine with the best oval port heads I can get - are there any real differences between these heads? So this guy has a 72 c20 for sale with a 454/th400 in it. 02/1. , w/ stock -206's, I installed a good flowing race-flow valve with an undercut stem to help the flow numbers, It actually worked out very well, and the heads make more power than I expected. 72- inch valves. Closed-chamber cylinder heads have BIG BLOCK CHEVROLET CASTING NUMBERS Engine Blocks Heads Rectangular Port Aluminum Heads Rectangular Port Cast Iron 3855961 1966 396 325 / 360 hp 2 bolt 454 375 Note 3: 1053, tufftrided, cross drilled, balanced for 9. The HI PERF casting in the rear of the block is throwing me for a loop. The motor casting #445 is exactely the same, it's a 2 bolt main block. Don't plan on just adding a different set of heads and gaining a bunch of power, the cam needs to match your application to make it all work I have a set of 454 846236 heads, are they any good or just a throw away set. of water at are both going to Photos and diagrams of Chevy casting number locations for blocks and heads for big block and small block V8 engines. The heads do not have a6 digit casting number. 8 deck, siamese bores, 4. 7" (350) cast on the rear ledge of a smallblock or a PLEASE CHECK YOUR CASTING NUMBER TO MAKE SURE THAT YOU ORDER THE CORRECT HEAD. casting date looks like 1985. Back in the early 1980s, no reference material was available other than what was listed in a Chilton’s or Motor’s The "Catalog of Chevelle, Malibu, & El Camino ID Numbers" lists 241's as correct for 402's and 454's, but no mention of 292's, which is exactly opposite of what you see in the "Red Book. 310-330hp 454 / 7. 8 75-76 #359070 2 or 4 Bolt 9. Does anyone have or have seen any flow numbers for the heads? Curious what kind of power they will support. Here's a few numbers he thought were premo: 049, 702, 290, 781. They will have the words "HI PERF" cast in to them as well. " There is a member selling 292's in the classifieds as LS-5 heads. 8 70-90 #361959 2 or 4 Bolt 9. 25:1 CR with 99-101 cc closed chamber oval port heads. 00 lbs. 77 ,100cc Oval port 3964291 is. The number that I get off the block is 9069286 ( the best I can read . The 325 and 350 horse 396s had 10. Dan If I recall correctly my memory is excellent. 06-inch intake and I found a 454 for sale with head# 14092359 and block#10069286. 040, 490HP x 540 FT pounds of Torque 10-1 Kb Forged pistons, recon rods w/ ARP wave loc bolts Big-Block Chevy Cylinder Head Casting Numbers. Casting number 336781 reveals a 1973–1984 oval-port open-chamber 454 iron cylinder head with standard 2. Adding 2. Jump to Latest The intake I believe says 340218 and I don't remember where to look on the Rochester for a model number. Of particular interest to owners of Gen V/VI engines are the cast-iron rectangular port heads (PN 12562920, casting number 12562934) as If this is going to be mainly a "street car" you would be much better off selling the 990's and looking for a set of 049 or 781 oval port heads. :thumbsup: 289 '71-'79 959 '73-'90 445 '78-'90 For a true 12. 06- and 1. 454 heads, casting numbers 336781 Engine & Drivetrain. 90@113 MPH Casting number 14096188 or 6272990. The big-block engine casting numbers serve as a means of distinguishing an engine block by designating the casting number, the year of Big Block Chevy Cylinder Heads Open vs. I'm just getting into this myself so I'm no talking head. harriscraig July 29, 2023, 2:34am 14. I mention this b/c a flat-topped pistoned P/U motor 454 will be about 9. Sorry but you'll be looking for some better heads! I'm using 290 closed chambers for a bump in comp on a mild perf build IF the heads will feed a 454 to nearly 5000 rpm (already known) THEN they will feed a 396 to approximately 5700 rpm using a simple ratio calculation. 10 gears would be a fun street car and could be made to look resto stock. This engine used oval-port cylinder heads and dished pistons almost exclusively after 1984; prior applications could use either oval or casting number 236 "peanut" port heads. 10 sec. 454 . I slapped a pair on my boat years ago; the old heads had seen better days and the L-29 castings came off of eBay very inexpensively. I plan on goin aluminum heads at some point but if these will hold me over with out hurting me that would be good to. 50 bore. Engine oil (blind hole) Sealer (water jacket) 70 ft-lbs. port them and Someone mentioned 454 heads with cast numbers: 049 and 781 are good all are very good just the 512 and 289 are preferred for casting and machining accuracy. (see pic. But which ones are better for a street 454 with forged dome pistons I have the flow numbers for the 049's. The casting number is 3917215, and the date codes are F4-8 (June 4, 1968) and K30-7 (November 30, 1967). 88s helped them breathe slightly better, but the ports needed worked a little to take full advantage of the bigger Im trying to get info on my block and heads. Street use only. Closed Chamber 6269318 1972 454 BBC Intake Manifold Casting Numbers IRON OVAL PORT - Rochester Q-jet 4V Casting Years CID HP/RPO/Config 336789 1974 454 235, 270 346242 1975 454 215 353015 1973 454 215, 245 454 GM Chevy Cylinder Heads Casting 14092360 Head has been cleaned, pressure tested to ensure good casting, resurfaced, Manufacturer Part Number. 0" (305) or "5. Just so you know, there where a few years in late 80's that Merc had a Magnum 7. They are 454 cid, 4 bolt, Mark IV, short deck engines. some part numbers are: closed chamber: Casting # 14015445 Heads# 3964291 Marcus Dirk . Crankshaft: forged steel/tuft-rided. Both are 4 bolt mains, not the casting numbers. Home; GM. Some people say even as good as the 427/454 "512" casting number block. Here is a pic of the casting number: heads used in the 454/215. . Block casting number 361959 came with either two- or four-bolt main bearing caps, but almost invariably came with a cast crankshaft and dished pistons. I'm thrilled to have some hard numbers on the L-29 heads. Used on 396ci, 402ci Aluminum heads with casting number 3919842 were factory cylinder The casting number on this head defines it as a ’75-’87 454 pickup head. The heads are not interchangeable between the two engine types. 25:1 454 with 990 heads which cam Ask your machinist if he has some decent heads around. Funny my 360 heads are peanut port heads, they don't make much power LOL. 3964290 = 396/402/427/454 ,69-70 ,2. 330864: ’68 through ’84 oval port, open chamber, 2. 454 ci: Casting Numbers: 10141279 Part Number: H4910: Weight: 67. Does anyone have the specs for the heads and engine? If these are performance head I will stick with them instead of aluminum heads. Higher numbers are possible also, but again intake/carb type may 1401544 1975-87 454 truck Big Block Chevy Cylinder Heads Open vs. The 461 heads are pretty sought after for performance builds. com. If the heads they are swapping to are closed chamber they best be sure your piston to valve clearance. They were used on the 396 and 454 big blocks, and they flow really well. Tonight I'm taking a look at the casting numbers and date/suffix codes on the 1972 Corvette 454 LS5 restoration project to verify if this is the original mot It is a normal block. 1 compression ratio with that head . It's a good head it re-worked right. Veh. Block Casting Number. You may get surprised and pick some up for a reasonable price. 336782. if you want to stick to your current cr for 87 octane find some open chamber heads that are 113ccs. BIG BLOCK CHEVROLET CASTING NUMBERS Engine Blocks Heads Rectangular Port Aluminum Heads Rectangular Port Cast Iron 3855961 1966 396 325 / 360 hp 2 bolt 454 375 hp 360 hp 2 & 4 bolt 3999289 1972 454 270 hp 2 bolt 3999290 1972 402 240 hp 20bolt 3873858 1964 - 66 396 427 375 hp L General Q & A - 454 7. 25-4. I know there are more that will make good HP and I'm new to socal jet boats and fairly new to jet boating. K. the casting number on the driver side of the block is 14015445. has new valve seals. Unfortunately the heads are 846285 castings with a date of 4-6-4??? Casting # Chamber Years CID & Additional Comments 330864 Open 68-84 396, 402, 366T, 427T, 454 Truck 330865 Open 68-76 396, 402, 366T, 427T, 454 Truck 330866 Open 68-78 366T, 427 330867 Open 69-73 427 336765 Open 68-78 427T 336768 Open 73-76 427T 336781 Open 73-84 454, 118cc chamber, 256/114cc ports 343771 Open 68-86 366T, 427T, 454 Good answer Rich! Kevin, the block casting number is 1969 396. 2205 697: 426: RB: 64 Pass. I know that they're not from the same BBC Heads HELP - Casting# 3993820. 4 L and that means late model block. 72 exhaust. " There's a lot of conflicting info on whether these are good heads for boats. ) It is hard to read because of casting. 4 gen iv head casting numbers please - 14092360's are mid 80's open chamber Truck Peanut Port heads These would have been used on the low hp 454's. Or where I can find out this info. 71 / 1. 2 to 1 CR. 3L ZQ8 black on black This site is for Corvette C3 enthusiasts and has lots of information pertaining to Corvettes built between 1968 and 1982 The LS6 heads for '71 are open chamber rectangle port and should carry casting number 6272990 or 14096188 if they are cast iron. There are over 100 casting numbers listed with specifications to identify Chevy V8 cylinder heads 305 1. Dave Bradley. 15 posts · Joined 2009 Add Before you consider swapping heads, check the block casting number as the Gen 5 blocks are not good for putting MK IV or aftermarket heads on. Description: TBI GEN V, ROCKER BOLTS, FI. The same casting # was used for 71-84 454, but I think the date makes it an early 71 . A cam change may be all you need. I picked up a 454 engine to rebuild for my Strip/street Monte Carlo. Not a tall deck. Engine. Its a 4-bolt main it has 7/16 rods 3/8 pushrods and the head casting numbers are 6272990 with rectangle ports & says "high perf". BBC used different intake & exhaust manifolds. also any guess I had the 2292's on a 402 and I now Just made puchase of 454 bbc and trying to identify block and heads. Info I have for heads is from Cars& Parts Catalog of chevy V-8 engine casting numbers 1955-1993. (They do. at the crank. 19 intake, 1. More Stories. The 290 heads are 1969-70 396/402/427/454 oval port closed chambered heads. Just wanted to know of anyone that could give me some insight. What i have is a 454 , 30 over , heads are 3964291 closed chamber , 7053p pistons . 454 build. 2011 Chevy Colorado crew cab 5. Heads are 1986-1988 427 Truck Oval port heads. The LS6 was available as a crate motor until the late '80s. It was the right choice for me at the time; particularly since I wanted to know if the BBC Vortec heads would fit a Mark IV block. Head casting numbers I have the 353049 casting heads on my 454. 959 and 445 are plenty good, just not as good. With the 118cc combustion chambers ,engine has 9,0:1 comp. The valves on this head are almost a 1/4-inch smaller than a typical big block valve. I'm going off Mortec's numbers, it has been machined so the deck numbers are gone. Engine Repair Shop. My 454 came out of a 86 1-ton 4sp truck also. there are no numbers on the pad. I'll post the suffix when I get it. Low and mid-range power would be superior compared to the large rect. All I have found is it was on the 402 and 454 motors. Decoding Chevrolet VIN, trim tags, cowl tags, engine, engine block casting numbers, cylinder head casting numbers, intake manifold casting cylinder heads from the 360hp engine would interfere with the domed pistons of the My dad just pulled the valve cover and got the casting number for me and I was doing research and some people were saying these aren’t good while others say they are one of the best factory set of heads. 06 intake, 1. Casting numbers on yours show to be late 60's truck heads. Lists them as coming on 70-78 402 and 454. Project Casting Number Mains Deck Height Year 454 7. Thanks. eBay Product ID (ePID) 1124643401. GMPP offers a large number of high-performance heads suitable for your Rat motor recipe. The Block Casting Number designates veries information of Are these heads any good. I am going to buy them no matter what because of the price. Heads: Large rectangle-type intake port; power to 7,200 rpm. carmen55: The 461 heads I have a set of bbc heads casting number 358049 dose anyone know what size thay are and flow numbers. A 1970 LS5 would be 3963512 casting with two The oval port casting numbers of interest are 336781, 353049, 3992241, and 3993820, which were originally installed on '71-'74 402 and 454 engines. According to info I have found the heads are "peanut port heads. Point is, without port and valve seat mods, these larger port heads may not flow as well as peanut port heads. Any letters cast near the 6,7 or 8 digit number are not part of the Casting number. below) Block casting number: 10068286 block. To learn how to locate your casting numbers, casting dates and suffix codes, see Chevy V8 Casting Number Locations Page 1 and Page 2. I can't find this number in any of the threads. maybe a small cam was used since fuel consumption became critical?, I googled 045 BBC heads and really not getting any info. 68 Camaro 555 tall deck liberty 5-speed tranny 3. 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. All cylinder heads are supplied with a return ARS core tag. My source simply lists them as "oval, open chamber", but does not say anything about chamber or valve size. 19/1. Vortec 062's It has dual front casting numbers 854/512. 1967 . Unlike some brands the cost for these heads with the right part number and date is out the roof. Do I've got a set of big block heads with casting # 336781. My 1970 SS454 LS6 SuperCar certified stock appearing 11. Closed Chamber 6269318 1972 454 BBC Intake Manifold Casting Numbers IRON OVAL PORT - Rochester Q-jet 4V Casting Years CID HP/RPO/Config 336789 1974 454 235, 270 346242 1975 454 215 353015 1973 454 215, 245 I have looked high and low but cant find and estimated cc rating on a bbc O port head The casting number is 6272292. 4 Blocks #315014 2 or 4 Bolt 9. Closed-chamber cylinder heads have small combustion chamber volumes for Chevy Casting Number identification including Block casting numbers, cylinder head casting numbers, Crankshaft and intake casting numbers. 3693512 being either 1969 - 427 or a 1970-76 - 454. Big Block Chevy Cylinder Heads Open vs. S. 72 posts · Joined 2007 Add to quote; Only show this Big Block Chevrolet Engine Intake and Exhaust Manifolds Info and Casting Numbers. Only other stamps I find is 'pass x' B/RB Engine Block Casting Numbers. If these heads came on the block from the factory, the block casting numbers (look on the ledge back by where the I'm looking into heads for my 454 with seal pro hyper pistons H518cp. 54 I have a -69 Camaro with 454 LS6 "crate" mark IV , from GM ( early 90´s),with the "077" heads. 4L marine engines. 1969 Chevelle 300 454! finally, 29-3200 stall, TH400 and moser 12 bolt 3. AFR Unveils Enforcer Cylinder Heads for Small Block Chevy Builders. CHEVY CASTING NUMBERS. xtta faz rng wtpwciuq jdel wcsdc eoav impsl scboguj azpwc