How to identify double hump heads

1. 3782461x SBC Double Hump Cylinder Heads 327 350hp - eBay.
2. Camel-hump 461x heads!!?? | El Camino Central Forum.
3. Head Numbers Casting Chevy.
4. Need help Identifying 327 & Double Hump Heads & Holly.
5. Find REBUILT SBC 1.94 # 462 , CHEVY # 3890462 DOUBLE HUMP.
6. What are fuelie heads and how can I identify them - Team Chevelle.
7. Double Hump Heads can't identify??? | The H.A.M.B.
8. SBC combustion chamber size 64cc vs. 76cc? - Pirate 4x4.
9. Chevy Numbers Casting Head.
10. Casting numbers, and are these heads any good? | S-10 Forum.
11. Double Top and Bottom Definition - Investopedia.
12. 202 camel hump??? | Hot Rod Forum.
13. Used, Over-Run Parts and Cores Wanted - Brzezinski Racing Products.

3782461x SBC Double Hump Cylinder Heads 327 350hp - eBay.

1970 gold. Same runner design as the "186" casting double humps for '69/'70 but the "441"s have a much larger combustion chamber @ 76.28cc's (whereas "186"s have 64cc chambers). "441"s were only offered from the factory in 1.94/1.5 valve configuration and only on the 250HP 350CID engines. 1,294 Posts. #5 · Oct 18, 2008 (Edited) The Standard 327 HP rating in Full Size cars '65 and back is 250 (altho in '65, many if not all, had the smaller Double Hump heads). The Standard 327 HP rating in '66 to '67 was 275 (These engines have a Q-J carb). After doing a little research it looks like in '68 they did reduce back to a 250 HP engine.

Camel-hump 461x heads!!?? | El Camino Central Forum.

The “double hump” or “fuelie” heads have been around since the 1960’s. They are still used in a variety of applications. We have a good supply of used ‘186 & ‘492 heads available with everything from “ Undercover Porting ” to CNC Sportsman Porting. Stock “double hump” heads flow 202 cfm intake and 141 cfm on the exhaust.

Head Numbers Casting Chevy.

Jan 02, 2011 · The camel hump heads have the same 64 cc combustion chamber as the stock heads they have bigger valves and bigger ports to let it breathe better at higher RPM. Yes there are better heads available but if you are driving on the street I would run those and enjoy what you have (a 283) untill such time as you step up to a bigger motor. Hi Guys, I have a set of double hump heads on what we believe is a '64 327. The casting numbers on them are 8782481 and 114H. Then they say "GM" with a "4" underneath it. I can't seem to find any info on this number. Anyone here know about it? I looked really closely and don't think it says "461". Really looks like "481". Thanks for any help! EDIT!.

Need help Identifying 327 & Double Hump Heads & Holly.

Apr 02, 2020 · The name fuelie is somewhat of a misnomer, however; the fuelie heads were used on carbureted engines as well. The names "fuelie", "double hump", or "camel hump" comes from the shape of the casting identifier. These heads were used during the '60s and '70s on various performance engines. Casting number "462" fuelie heads.

Find REBUILT SBC 1.94 # 462 , CHEVY # 3890462 DOUBLE HUMP.

Chevy Small Block Cylinder Head Identification Guide Borrowed from CAR CRAFT Magazine. Key: Cast Marks: Cast Nos.... Double (Captain's) bars... 1.84/1.50 valves, hardened seats, accessory bolt holes, best of the 305 heads: 1.84/1.50 valves and ports too small for large cid; accepts 1.94/1.60 valves & seats: Casting no's. & Date codes are. Oct 19, 2010 · The heads you have (462) came along in 66. Basically, there were two versions of the 461 and 462 double hump heads. Both versions were the exact same casting with the differences only being in machining and valve sizes. They either had 1.94in intake valves/1.5in exhaust valves or 2.02/1.6in valves.

What are fuelie heads and how can I identify them - Team Chevelle.

Small block chevy head castings; Casting # Combustion Chamber size CCs Intake valve Exhaust valve Production Years Misc Engine; 10033867: 62cc: 2.02: 1.60: over the counter 23 degree, angle plug, 196 cc intake runner, Aluminum. The most common dimension include: 3 5/8" between the top 2 drivers side holes, 3 1/2" between the top 2 passenger side holes, and 4 3/16" between the top left corner and bottom right corner passenger side holes. Corvette & ZZ to ZZ4 Aluminum SBC Heads.

Double Hump Heads can't identify??? | The H.A.M.B.

There is no difference in the castings between 1.94 and 2.02 intakes. You can easily retrofit a set of 1.94s with 2.02s, the biggest thing would be some mild bowl blending and if necessary, unshrouding. relic7680. 06-10-2007, 10:41 PM. well the heads look to be pretty untouched (even paint appears to be original) so whatever the valves measure.

SBC combustion chamber size 64cc vs. 76cc? - Pirate 4x4.

Nov 08, 2009 · Back in the late 60s, we always thought if you had the "double hump" heads, you had the best available. Sounds like there were a few versions... Chevy Small Block Cylinder Head Identification Guide Key Cast Marks Cast Nos. Description A Rectangle 460 ‘55 & up 265/283 low comp (8:1) 1.72/1.50 valves. Identifying the engine as a 90-degree small-block Ford V8 is the first part of the process; differentiating the 289 and 302 follows. These engines were manufactured during the same era, with the 302 eventually replacing the 289. The same block and cylinder heads were often used on both, however, differences in bore, stroke, and crankshafts exist.

Chevy Numbers Casting Head.

The heads come as pictured and are ready to install. The heads pictured are the actual heads you are buying and will receive. The double hump / camel hump heads were factory installed on all High Performance Fuel Injected and carbureted Chevrolet vehicles including Corvette, Camaro RS SS & Z-28, Chevelle Malibu, Chevy II Nova, Bel Air, & Impala. Aug 30, 2018 · The quickest way to identify these high-performance Chevy heads is this double hump at the end of each head. 16. Back in the day, we weren’t thinking of unleaded fuels and hardened exhaust valve seats because leaded premium fuel was plentiful and cheap.

Casting numbers, and are these heads any good? | S-10 Forum.

Both castings had the familiar "double hump" machined pad located on each end of the head. 1969 engines used head casting number 3927186 and featured the large 2.02" intake and 1.60" exhaust valves of the earlier heads. 1969 heads also have holes drilled and tapped in the ends due to a change in the alternator mounting method. Fel-Pro® Valve Stem Seals. Fel-Pro engineers analyze the OE design for every application. The OE design is tested and benchmarked. Based on the analysis, we determine the material used, considering the durometer (relative hardness) of the rubber, temperature requirements (both extreme heat and extreme cold), resistance to common oil types, tear-resistance and leak rate. Double Top And Bottom: Chart patterns in which the quote for the underlying investment moves in a similar pattern to the letter "W" (double bottom) or "M" (double top). Double top and bottom.

Double Top and Bottom Definition - Investopedia.

S/R Torquer heads are designed specifically for pre-1986 small-blocks and are rated at 205cfm of flow at The Chevy cylinder head casting codes are one of the best ways to identify a Chevy cylinder head The end result were two heads based on Chevrolet’s best street head, the 690, but with a number of performance upgrades including some that. Look at the last three digits of the casting number, these will identify if they are double hump heads. No production chevrolets had double hump heads in 1973. Chevrolet lowered the compression ratios on all engines in 1971 and used the larger open chamber heads (76CC) to keep compression ratios down. There are a lot of castings to choose from when running the Chevy Double Hump heads. In this video we discuss what is the best casting to start with for you.

202 camel hump??? | Hot Rod Forum.

Jan 13, 2012 · Re: 3782461 heads vs. other double humps. Class rules. But you can see what I'm talking about with these two pictures. The first one is a 461 and the other is all the rest of the double humps. You can see the 461 has a spark plug hole lower, closer to the piston and there is no tapering off below the spark plug like the other one. Either needs to be specific to the vortec heads. A Holley 4777 or 4779 would be a good choice for a carb. 5) With flat-tops and properly set-up it should be at or over 400hp. Most flat-tops will leave the piston at least.020 in the hole if this occurs.

Used, Over-Run Parts and Cores Wanted - Brzezinski Racing Products.

The L31 Vortec comes in two different casting numbers, 10239906 (#906) or 12558062 (#062) Watch this video to learn how to fix the top end of your Chevy 350 Cover the ports and top of the engine heads with painter's tape Paint the engine with Chevy Orange Engine Enamel Paint Ls 4 8 5 3 Big Valve 862 Heads 2 00 1 57 Valves They will, however.

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