the difference is the combustion chamber the 461 has a 64 CC chamber and the 462 has a 68CC chamber, I would not use either unless I had them and the guides were in good shape if I had to buy a set get the SR torker from Dart they make good power for less than puting valve guides and screw in studs/guide plates in the

Similarly, it is asked, are 461 heads good?

The 461 heads were THE heads to have in the days prior to the aftermarket heads. They are good if you want to run a class where stock heads are required. With the advancements in casting and air flow research these heads have been eclipsed in today's world. This aside, they are decent heads and still do a good job.

Subsequently, question is, are 441 heads any good? The 441 has a reputation as a good-flowing head among the production 76cc chamber heads. In this particular case, it lost out to the 882 head, but overall it's a decent head that responds well to pocket port work and larger 2.02/1.94 valves. Its small 155cc port volume creates great torque and excellent driveability.

Additionally, what are Fuelie heads?

The 461 head is more popularly referred to as the “Fueliehead, because it was introduced as standard equipment on the 1962 327ci Corvette engine that was fed by a mechanical Rochester fuel-injection system. In some bench-racing circles, all double-hump heads are classified as Fuelie heads.

How do I identify Chevy heads?

Chevy heads have often been identified by sight and most commonly by the different casting shapes on the ends of the cylinder heads. While these casting marks cannot tell specifics about the cylinder heads, they can help identify a performance head from a non-performance head.

Related Question Answers

What is the best small block Chevy head?

The two best small block Chevy heads in terms of peak horsepower were worth more than 60 hp.

Peak Torque and Horsepower.

Cylinder Head Peak Horsepower Peak Torque
Edelbrock 395 at 5,900 rpm 409 at 4,200 rpm (5)
Speedway 381 at 5,400 rpm 409 at 4,200 rpm (5)

What are the best stock LS heads?

If you are looking for stock heads (not aftermarket), the Vette LS6 or GTO/Vette LS2 heads are probably the ones to get. They are all 243 casting heads (true LS6 heads have lighter valves). Edit: sometimes, the Vette LS2 heads are 799 casting).

Where is the casting number on Chevy heads?

Chevy smallblock and big block cylinder heads have the CASTING NUMBER and the CASTING DATE located in the rocker arm valley. These numbers are found after removing the valve cover on the head. Some cast iron heads have the casting number on the underside of an intake runner.

What are SBC double hump heads?

[edit] "Fuelie" headsThe most recognized end casting identifier of the SBC heads is the "fuelie", "double hump", or "camel hump". It got the name fuelie from the fact that it was used on optional high performance fuel injected SBC engines, mainly installed in the Corvette.

What are Vortec cylinder heads?

Chevrolet Vortec Cylinder Heads' fast burn combustion chamber and high-velocity ports combine to produce big horsepower. The Vortec Heads come with various intake and exhaust valve sizes to complement the high-velocity port design and your performance needs.

Where is the casting number on a small block Chevy?

The casting number is located on the driver's side, top rear of the engine block. The number on the front passenger side of the engine block will NOT tell you the displacement of the engine block.

Do aluminum heads make more power?

Aluminum heads dissipate (get rid of) heat much faster than iron heads. Aluminum heads will not automatically create more power than iron heads unless they flow more air and are installed on a higher compression ratio engine.

Will 327 heads fit on a 350?

They are perfect for a 350. Both the 327 and the 350 have a 4" bore so they like the same heads. Old heads like that will have softer valve seats, so if you want them to last a long time, you should either replace the seats or run leaded gas in the engine.

How much horsepower does double hump heads add?

"Double-hump" heads were found on many of its high-performance engines in the 1960s and early 1970s. They were manufactured with larger intake and exhaust port volumes and valves for the period, and engines equipped with them had output ratings of more than 350 horsepower.

What are double hump heads worth?

461 and 462 double hump complete heads should be worth or priced at $200 a set at the very least. With all the choices in new motors and heads these do not have the interest they once had. One thing to look for on those old heads is if someone at one time put roll pins in the castings to pin the rocker studs.

Are Vortec heads better than double hump heads?

Types of GM Vortec HeadsThe L31 Vortec heads have larger ports than the older Gen I cast steel heads, so they outflow the older heads. The Vortec heads are a little bit lighter than the older heads and have a “kidney” or “heart” shaped combustion chamber that is more efficient than the double hump chamber.

How do I identify GM engine block?

How to Identify a GM Block
  1. Locate the engine ID number. On small-block V8s, it is located on the passenger-side front of the engine block, right below the cylinder head.
  2. Decode the ID number prefix. The prefix is five-digits long and begins with a letter.
  3. Cross-reference the engine ID number with a Chevrolet engine ID listing.

What do performance heads do?

Few components have a bigger effect on performance than your cylinder heads. In conjunction with your fuel system and intake manifold, cylinder heads control the amount of air and fuel that's fed to your engine. And very few factory heads are able to handle stroker or large cube, large displacement upgrades.”

What's the difference between a 350 and a 350 Vortec?

The regular 350 head utilizes a 90 degree intake bolt angle while the Vortec makes do with a 72 degree bolt angle. Experienced mechanics are all too familiar with the lay out of a Vortex head as all the attachment bolts point straight up when the head is bolted to the engine.

Are 882 Chevy heads any good?

The 882 heads are smog heads from '74 to '80 and not very well regarded, but neither are stock '85 heads - if you can find out more about the 882's they may be better than your stock '85 heads - ie not only polished & ported but if milled so they will give higher compression and if valves were changed to 2.02 etc they

Are Chevy 882 heads good?

GM 882 Iron The smallest of the GM heads we tested at only 151 cc, the 882, turned out to be the best-flowing of the early iron heads. This head was tested with the 1.94/1.50 valves. If you are into these heads, the best way to find a good one is to flow-test several. But in most cases, that's impractical.

Will lt1 heads fit older 350?

Don't use LT1 heads, get a set of Vortec heads, its almost the same, except they're iron heads, with correct coolant flow, you will need a Vortec intake made to carb the engine, you can find one on any hi performance parts catalog. Vortec heads are based on the iron LT1 heads.

What are 882 heads?

The 882 heads are smog heads from '74 to '80 and not very well regarded, but neither are stock '85 heads - if you can find out more about the 882's they may be better than your stock '85 heads - ie not only polished & ported but if milled so they will give higher compression and if valves were changed to 2.02 etc they

Are all center bolt heads vortec?

Not all center bolt heads are Vortec heads. In the older heads, the center 4 intake manifold bolt holes are drilled at a 73 degree angle to the intake face of the head, as opposed to the older style heads, where all the intake manifold bolt holes are drilled at a 90 degree angle to the intake face of the cylinder head.

What CC are camel hump heads?

Even older is the troglodyte-like 64-cc chamber heads, often referred to as “double hump” or “camel humpheads because of their distinctive casting marks on the ends of the heads. These smaller chamber heads had better flowing ports than the later 441 or 882 castings.

What year did Vortec heads debut for small blocks?

1984

What year did Chevy make Vortec heads?

1996

How do I identify 350 Vortec heads?

An easy way to identify Vortec heads is to count the number of intake manifold bolts that hold the manifold down Vortec heads will have two bolts in each corner of the engine, all of them are perpendicular to the ground with the engine sitting in the car..

How do you identify cylinder heads?

Cylinder heads may be identified by their casting number, located between #4 and #5 pushrods. General identification is as follows: 850-1100 heads have a heater tap at 90 degrees to the centerline of the engine. The space between the thermostat housing and the valve cover is small, at 1/16".

How do you tell a 350 from a 305?

By far the easiest way would be to pull a head and measure the bore. A 350 will have a 4 inch bore ( as would a 327 or a 302) while a 305 will have a 3.736 in bore. The difference is very pronounced once you know what you are looking at .

Are 906 Vortec heads good?

the better of the 2 are the 906 casting heads because they have like 20% better flow over the 062 heads. 062 heads come of the 3/4 ton trucks. So you have the lower flowing vortec head but hey man be happy you have vortec heads man those heads work wonders. But all in all 062 is less flow and 906 is high flow.

Why are LS engines so good?

The LS engine family is known for having smaller proportions than its competitor's engines, making it much easier to swap into cars with small engine bays. The Chevy LS platform is banned from some motorsports because it can be swapped into smaller cars and give them an unfair edge over the competition.

How do I identify a 305 Chevy engine?

How to Identify 305 & 350 Engines
  1. Look for the engine ID number. According to Year One's Chevrolet Engine Identification page, small-block Chevrolet engine ID numbers are on the left (passenger) side of the engine block, forward, below the cylinder head and near the alternator.
  2. Decipher the ID number prefix.

How do I identify my engine?

Your VIN number is your vehicle identification number and you can find your engine size by VIN number. In the series of numbers and letters, the tenth from the left denotes the model year and the eighth is the engine codes. Just tell the store clerk those two characters and you're in business.