Chevy head casting numbers double hump. They have also been...
- Chevy head casting numbers double hump. They have also been called "camel hump", but I always referred to them as double hump. What are the specifications of a Chevy engine block with casting number 3970010? Chevy small-block engine head casting numbers identify the model year, horsepower range, valve and chamber size and the size of the intake and exhaust ports. I honestly think with my current combo I could run high 11's @ 115mph on radials with a cam that isnt even 1/2" lift and less than optimal gearing. The seven-digit casting number is located centrally on the top of the cylinder head, between two valves. 94(Intake) & 1. 2. the 882 heads were installed on the 350ci and 400ci engines (400 heads had steam holes). The castings are usually identified by the last three numbers, so 3782461 cylinder that was produced originally for 327ci engines would be better known simply as the 461 head. Another immediate clue to this engine’s identification are the later Camel Hump heads with accessory holes. They were manufactured with larger intake and exhaust port volumes and valves for the period, and Dec 12, 2018 · Those double-hump heads are still a favorite with nostalgic enthusiasts, even with the availability of today’s better flowing aftermarket offerings. Here's a picture of what the ends looked like. Only Chevelle-specific information is listed here to conserve space. Has 461 Double Hump Heads . Going to look for a good pair of heads for a 350 which casting number should I look for to get the best heads? How do double hump heads look like? Complete 327 SBC 300 HP Factory in really nice ( unmolested ) condition. There are a lot of castings to choose from when running the Chevy Double Hump heads. Mar 27, 2016 · As 52 F-3's ID list shows; the 69's would be the small hump castings with the accessory bolt holes, the good number for 2. Some heads have triangles , squares etc. Chevy cylinder head Identification - Small block casting numbers, Big block cylinder head, camel back heads, double hump heads The suspense was killing me so I started running the numbers and decoded the engine block casting numbers, engine suffix codes, date codes, crankshaft casting numbers, cylinder head casting The pad that sticks out from the passenger side of block where the cylinder head bolts (behind the alternator) will show you numbers and letters. Your gonna need casting #'s. 02's at some later date. What 302 heads? casting numbers are needed as most people call any head that was on a small block a 302 head. The double hump or camel hump casting symbol on the end of this head indicates a performance cast-iron head used in the 1960s. Do a search on ebay for hump heads and you can see pictures. Thanks. Double hump "fuelie" heads are the original -461's that came on both, the 315hp/283 FI engines w/ medium valves and the early 360 and 375hp/327 FI engines w/ both medium and big valves respectively if I have this right! The engine block and cylinder heads were cast at Saginaw Metal Casting Operations in Saginaw, Michigan. (Oct 1965). 02 valve heads would be a "186" casting numbered head common to the 69 Z/28 302's' some other applications had smaller valves as HK1837 noted. Pair of Chevy SB Double Hump Heads 3782461. The larger 2. 94" intake/1. One hump, one triangle. Both are 3782461, Theres a small 64 above that number and 194 under it. 302/327/350 heads by the casting numbers shows its October of 68 double hump head need full rebuild $100 obo 1970 Chevrolet rebuilt double hump heads. In this video we discuss what is the best casting to start with for you Chevy cylinder head Identification - Small block casting numbers, Big block cylinder head, camel back heads, double hump heads Chevy Forums FREE technical assistance for your restoration and repair. 1 compression… I should have This page was last modified on 7 January 2025, at 07:30. General Motors identifies its small-block Chevy cylinder heads with both casting numbers and casting marks. Early ones, in fact most, didn't have screw in studs and guide plates, and most had 1. First letter (A through M) is month (Jan through Dec) (I not used), one or two digits for day of month, one digit for last digit of year cast. The casting number on each head is 3782461. Stock “double hump” heads flow 202 cfm intake and 141 cfm on the exhaust. Cam is a comp cam 292. I never did look at the casting numbers back in the day, just the humps and the plug angles and valve sizes. They need rebuilding but were taken off not long ago and i never On the 461 double hump heads the "X" version had larger intake runners. Regardless of the HP number you can outrun many BBC's and AFR headed small blocks with some old junk camel hump heads. Pre-1969 heads do not have accessory mounting holes. 94/1. Then "google" "chevy casting numbers" and you will find about ten or so web pages to look through to find your heads. Trick Flow has revived those nostalgic memories in a much-improved aluminum casting. 13 (258 Votes) Heads are 64cc chamber, and commonly referred to as "Camel Hump" or "Furlie" heads. Number 3782461 is found on heads on the 1964 to 1967 models equipped with the 327. Definitely different than a double-hump. 02 valves in a real 69 Z-28 302 head would probably hit the small bore of a 283. Double hump heads have two humps on them. The camel hump heads were reserved for the higher performance Small Block Chevy engines. This casting is known as a “camel hump” or “camel back” head due to the double humps cast into the ends of the head. pull the valve covers and look for them in between the valves, last three numbers of the casting number identifies the heads (461,462 etc). The Generation II small-block engine, introduced in 1992 as the LT1 and produced through 1997, is largely an improved version of the Generation I, having many interchangeable parts and dimensions. Chambers are 66cc, Valve seat sizes are still 1. 1 set of bare castings with May of 68 date codes E 18 8 5/18/1968, and E28 8 5/28/1968. These heads have a casting dates of C 10 5 and C 18 5 which decode as March 10th and 18th, 1965. The older large hump heads, manufactured in 1968, end with the numbers 291, 461, 461X and 462. Hardened seats. also GM 4. Both have J215 casting date codes. 60 exhaust valves. 62cc 2. Step 3: Decode the casting number. The 882 heads had double heat-riser passage and were prone to cracking because they ran so hot. I'm going to the boneyard and machine shops this week-end. The instant I saw the heads I knew they are double camel hump, came on a 327, 202 and 195 valves…. 3. 50 E valves. This engine turns freely I have no knowledge of its The same heads and casting number came with the larger valves on the higher HP 327's that were installed on other Chevy models in '67 (not in full size). There you will read about what these heads went on and the size of the valves and everything. Heads need valve guides. Either way you have a great car and engine! Craig 1964 Impala SS 327/300 since '76 1967 Impala SS 327 Triple Black Hardtop in Find the casting numbers on the heads by taking the valve covers off and look between the valves and you will see the casting number. "Double-hump" heads were found on many of its high-performance engines in the 1960s and early 1970s. 50" exhaust valve sizing or may have the performance 2. Jan 2, 2026 · Several casting numbers are associated with the desirable double hump heads, including the famous 3782461 (or 461) and 3782462 (or 462) castings, which were among the earliest high-performance versions. The double hump or hump heads were mostly used on 327 highperformance engines in the sixties. The bigger heads to follow were the “double-hump” heads championed by the mid-’60s 327 engines. Casting number 3767462 identifies Camel Back heads on 327 engines in 1962 to 1967 GM models. They are still used in a variety of applications. The best small-block Corvette heads include the following:492 (double hump)-The prototypical double-hump, cast-iron, small-block head is casting number 3991492. But did you know that not all double-hump heads perform equally? Chevy actually made several running changes to the heads over the years, changing the part numbers as it went. 02/1. & Date codes are cast on top of head (under valve cover) between second & third rocker arms from left. 50 valves. 67 Camaro 4-spd, 350 with cam, headers, HEI, and double hump heads. I see no damage or repairs, has screw in studs and bronze guides. 3927186 casting number, 1. The most common heads sought by engine builders are ones identified variously as the "Camel Back," "Double Hump" or "Humper" heads used on a range of passenger cars and performance vehicles. Of course someone could have installed 2. For these original 461 head specs, what does it mean to have no accessory holes? I've heard of some people drilling them, why would they and what would they be used for? Looking to rebuild my original block. Camel hump heads will have (6-7) raised numbers under the valve cover they also will have the date made. Casting no�s. Head casting # 3856208 Date code F 24 5 June 24 1965 These heads were used in 1965 Corvette, 1965 Chevelle Z16, 1965 Impala (396ci). 3917291 casting number Small block Chevy 327, 350 Horsepower heads originally w/2. If you must Camel hump heads are pretty universally 64 cc from the factory. . 50(Exhaust) Double-Hump heads for the small-block are favorites among enthusiasts. 60" valve sizing. 50, 63cc chambers, 302/350. 02"/1. C1 & C2 Corvettes - Double-Hump Head Specs ? 3782461 - OK, dumb question time. As mentioned a small chamber 305 head would increase your compression and probably make a nice improvement. Bare heads fresh out of the machine shop with hardened exhaust and intake valve seats installed, as well as new guides. 02 intake and 1. Chevelle V8 Cylinder Head Casting Numbers - 1964 through 1972 These head castings were used in various other models of the Chevrolet lineup such as the passenger car, Chevy II/Nova, Camaro and Corvette. the late Vortec heads have a saw tooth type pattern. Chevy cylinder head Identification - Small block casting numbers, Big block cylinder head, camel back heads, double hump heads Dec 14, 2024 · Other Chevy cylinder head castings would do in a pinch, but the double hump, sometimes called camel hump, castings were the holy grail of Chevy small block cylinder heads desired by most people. Some valves included but couldn't find them all. Model specific subject matter experts, classified ads and more. We have a good supply of used ‘186 & ‘492 heads available with everything from “ Undercover Porting ” to CNC Sportsman Porting. The easiest way to reference any production head is with the last three digits of its casting number. These are 65 or 67 cc heads I think. Tag: Camel heads, Fuely Head, 327, 350, 400 These heads were also equipped on 302 and 350 engines in Chevelle's, and Camaro's in 1968. It also has factory Forge Steel Crankshaft. 60 valves were an option, but were not produced in large numbers, using the same casting. Ready to build! Big block chevy heads, cam and lifters. I put a set of these on a 350, worked pretty well considering the 10. I'm putting a new carb on the car, and in so doing changing plugs, fuel lines, filter, etc. (1) sbc double hump cylinder head, 1:94 valve, casting 3782461 dated I 28 5. May have 1. As long as the does not go much over $200. Good pair of Chevy heads for rebuilding, Casting number 3782461. Camel heads Hi, picture of double humps or camel heads, those are '64 327 No:461 heads, 2 humps at the bottom of the head below the valve cover. I would think if they are the double hump (I think the casting # is 186) or the 041 castings (Same as a double hump, Produced 1969 and 1970) casting, they would be worth getting. C1 & C2 Corvettes - What are my heads worth? 3782461 double camel hump - Hi, I would really appreciate any advice on what my heads are worth, heres some info and pics. Without even looking up the numbers, we know these heads are desirable based on the fact that they were used on 300hp and higher engines from 1969-72. Back in the day, they were the head to have on a small block unless you had deep pockets. Reconditioning Double Hump Heads | Classic SBC Power on a Budget MarketPlace: Engine Parts (SB Chevy Camel Hump or Double Hump Heads) How to Identify a Small Block Chevy V8 Engine | Check the Numbers This is an original a pair of OEM GM high performance cylinder heads for Small Block Chevy engines. Chevy Double Hump Fuelie Heads T he “double hump” or “fuelie” heads have been around since the 1960’s. Head Casting Numbers: Chevrolet Small Block Engines Estimated Reading Time: 6 Minutes 286 July 15, 2014 General Topics 0 190K Rating: 4. 94 Reconditioning Double Hump Heads | Classic SBC Power on a Budget MarketPlace: Engine Parts (SB Chevy Camel Hump or Double Hump Heads) How to Identify a Small Block Chevy V8 Engine | Check the Numbers Used pair of Small Block Chevy Vintage 3917291 Cylinder Heads with 1967 date codes F-26-7 & G-27-7. During the small block’s storied history, there have been a myriad of cylinder head variations, and we are often asked what heads go with what engine, and which ones offer the most performance. The double-hump family actually consists of many different casting numbers that GM produced for different engines in the ‘60s and ‘70s. Let me preface this by saying I feel pretty silly just noticing this tonight after owning the car a few months. In the case of the 441, heads with the "X" has the same intake runners as the regular 441 but the combustion chamber was 80cc instead of 76cc. The suspense was killing me so I started running the numbers and decoded the engine block casting numbers, engine suffix codes, date codes, crankshaft casting numbers, cylinder head casting It refers to the casting mark on the ends of a couple of different 60's SBC performance cylinder heads. Chevy Forums FREE technical assistance for your restoration and repair. Used in 61-66 Corvettes, L79 and others. I've seen that before on numerous heads. I see the plugs are The "Chevrolet Small-Block V-8 Interchange manual" by David Lewis states as follows: a lighter cast head was released sporting 1. Heads have been media blasted, all threads cleaned & painted to prevent rusting. Joe In general terms, yes. Those numbers would match some where on your VIN of the Monte. 94 I and 1. oarsz, cwl17i, k9mtf, l0pfy, jx0xqr, 64cljo, bu3mh, unqxc, f1snmb, wihi,