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#9103782462
Chevy SBC Assembled Aluminum Camel Double Hump 461 Cylinder Head
- Double hump 461 chevy head features 180cc intake runner, 62cc exhaust runner, 2.02" intake/1.60" exhaust valves, 1.560" max spring pocket diameter
- Aluminum double hump head cast from premium quality aluminum that shaves 40 lbs. off the nose of your car vs. heavy iron heads
- Comes completely assembled with no accessory bolt holes, just like the original Chevy 461 heads
$613.99
/each
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Product Summary
Assembled Cylinder Head Style, Aluminum, Natural
- Double hump 461 chevy head features 180cc intake runner, 62cc exhaust runner, 2.02" intake/1.60" exhaust valves, 1.560" max spring pocket diameter
- Aluminum double hump head cast from premium quality aluminum that shaves 40 lbs. off the nose of your car vs. heavy iron heads
- Comes completely assembled with no accessory bolt holes, just like the original Chevy 461 heads
- 461 SBC double hump head features improved port/chamber shape for better performance with the 3-angle machined valve job that promotes better flow, especially at low-to-mid lifts
- Designed for 4" bore 1962-86 small block engines (302/327/350). A perfect option if you're looking for 327 double hump heads, 350 camel hump heads, or 302 heads.
Key Specs
| Cylinder Head Style | Assembled |
| Material Type | Aluminum |
| Finish | Natural |
| Combustion Chamber Volume | 64cc |
| Intake Runner Volume | 180cc |
Need To Know
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Return PolicySpeedway Motors 9103782462 Details
Speedway Motors 9103782462 Details
- Visually similar to GM casting #3782461, which first appeared on the 1961 Corvette “fuelie”
- No accessory bolt holes, just like the original heads
- Aluminum heads shave 40 lbs. off the nose of your car vs. original 461 iron heads
- Improved port/chamber shape for better performance and efficiency
- Standard port location for use with most intake and exhaust manifolds
- 180cc intake port volume (factory 461 casting was 160cc)
- 62cc exhaust port volume (same as factory 461)
- 64cc fast-burn combustion chambers deliver big power gains vs. 461 castings
- Combustion chamber volume number was calculated using an Autolite 3934 spark plug
- Includes Swirl polished & undercut stainless steel 2.02” intake/1.60” exhaust valves (most 461 castings were 1.94/1.50)
- 3-angle valve job promotes better flow, especially at low-to-mid lifts
- Intake flows 232 CFM @ .500” lift, exhaust flows 173 CFM @ .500” lift
- Flow numbers were measured with a SAENZ 600 bench, 4.030 bore fixture, 1255-style intake fixture, and 28 inches of water
- Exhaust port gained 20 cfm above advertised number by adding a 1-5/8 pipe (header), a larger 1-7/8 pipe flowed the same
- Accepts both perimeter and center bolt valve covers
- Single 1.46” diameter valve springs w/ inner damper
- High nickel powdered metal valve seats provide optimum heat transfer and wear characteristics
- Manganese bronze valve guides reduce friction
- Valve guides are compatible with all common valve materials and fuels
- Suitable for flat tappet camshafts up to .550” lift
- 7 degree lightweight chromoly retainers and keepers
- Hardened steel spring cups for durability
- Viton positive valve seals are a modern upgrade from stock 461 castings
- 3/8” chromoly screw-in rocker arm studs included
- 2-piece hardened steel pushrod guide plates for use with hardened pushrods
- Blocked exhaust heat riser manifold crossover port
- 3/8-inch NPT coolant temperature probe port
- Designed for 1962-1986 small block engines (302/327/350)
- Heads will fit on a .030-inch or larger bored out 283 block (2.02/1.60 valves) when 350 head gaskets are used
An Authentic Aluminum Reproduction of Chevy’s Camel Hump “Fuelie” Heads
Step back in time with our modern reproduction of the iconic Chevy 461 double hump cylinder heads, now cast in lightweight aluminum! Also known as "fuelie" heads, the 3782461 castings were used on many legendary Chevrolets from 1961-1967. Our all-new cylinder head casting is a modern take with all the old-school looks you desire out of a reproduction camel hump head. Features like fast-burn combustion chambers, high-velocity ports, large diameter valve springs, and positive stop valve seals bring the vaunted camel hump heads into the 21st Century.
Save yourself the hassles of hunting down original GM 3782461, 3782461X, or 3890462 castings, only to find out they can't be saved. By now, most original 461 heads have had multiple valve jobs and milled decks, which means buying a set is a gamble. Plus, when considering all the costs involved in machining them to accept modern valvetrain components, our all-new castings are a very cost-effective alternative that puts more money back in your engine build budget.
GM produced several versions of the Chevy camel back heads originally; however, these are visual copies of the very first double hump heads, often referred to as "fuelies" because of their use on Rochester Ram-Jet equipped Corvettes. As such, these heads will perfectly complement your nostalgic hot rod build or restomod muscle car, all the way down to the textured as-cast finish and cast parting line across the exhaust port side, just like the original heads. Plus, the raised valve cover rail means that full roller rocker arms will fit underneath original Corvette valve covers ('59-up covers). Our camel hump heads accept both perimeter bolt and center bolt valve covers. With a coat of Chevy Orange paint, you'll have everyone convinced you're running an original set of 461 double hump heads.
No Accessory Bolt Holes, Just Like the Originals, To Detract From Period Looks
Take note that these heads have no accessory bolt holes for the front drive (just like original 461s). There are a couple options to mount your alternator/generator: 1) you can rely on accessory mounts off the block or water pump, or 2) pair these heads with our "rams horn" exhaust manifolds. These 2-1/2" outlet manifolds feature built-in mounts for your generator/alternator and are correct for '62-'63 Corvettes. To utilize this method, you will also need both our alternator mounting bracket and alternator adjuster bracket to mount the generator/alternator. When going this route, you may also be able to use a lower power steering pump bracket such as our Saginaw bracket or Type 2 bracket, depending on your pump and frame/steering box clearance.
The original 3782461 castings delivered well over 1.1 hp/ci on many legendary Chevy models throughout the early ‘60s, which was a significant engineering achievement for the time. Highlights include the '61 Corvette 283/315hp and '62 Corvette 327/360hp (both with Rochester fuel injection and "Duntov" camshaft), the '63 Chevy 327/340hp, the '64 Chevy 327/365hp L76 and 327/375hp L84 (both with the "30-30" camshaft), and the '65 Chevy 327/350hp L79. With the undercover features included in these heads, you can expect even more performance out of your 283/302/327/350/383 SBC.
Application
These fully assembled heads are ready to run and are a great match to flat tappet camshafts. They're compatible with solid (mechanical) flat tappet or hydraulic flat tappet cams with up to .550” lift. The valve springs (single with flat wire inner damper) have a seat pressure of 120 lbs. Valves are +.100" long and must be used in conjunction with aftermarket aluminum roller rocker arms to clear valve springs used which are 1.46" diameter. The valve springs have 120 lbs. @ 1.800" installed height and 290 lbs. of open pressure at 1.20” (coil bind is at 1.160”). Pair with a vintage Duntov or 30-30 grind (or aftermarket equivalent) for a true nostalgic ‘60s experience.
Guides & Documents
CARB Warning
For race/ off road use or for use on pre-1966 vehicles.
CARB Warning
For race/ off road use or for use on pre-1966 vehicles.
Speedway Motors 9103782462 Specifications
Speedway Motors 9103782462 Specifications
| KEY SPECS | |
|---|---|
| MFG. Part # | 9103782462 |
| Brand | Speedway Motors |
| Cylinder Head Style | Assembled |
| Material Type | Aluminum |
| Finish | Natural |
| Combustion Chamber Volume | 64cc |
| Intake Runner Volume | 180cc |
| GENERAL | |
| Exhaust Runner Volume | 62cc |
| Combustion Chamber Volume Range | 60cc - 69cc |
| Intake Runner Volume Range | 180cc - 189cc |
| Exhaust Runner Volume Range | 60cc - 69cc |
| CNC-Machined Runners | No |
| CNC-Machined Combustion Chamber | No |
| Spark Plug Style | Straight |
| Intake Port Shape | Rectangle |
| Intake Port Location | Standard |
| Exhaust Port Shape | Square |
| Exhaust Port Location | Standard |
| Intake Valve Diameter | 2.02" |
| Intake Valves Included | Yes |
| Intake Valve Angle | 23 ° |
| Exhaust Valve Diameter | 1.6" |
| Exhaust Valves Included | Yes |
| Exhaust Valve Angle | 23 ° |
| Valve Spring Included | Yes |
| Spring Diameter | 1.46" |
| Damper Spring Included | Yes |
| Number of Springs Per Valve | Single |
| Maximum Lift | 0.550" |
| Machined for O-Ring | No |
| Valve Seat Machine Style | 3-angle |
| Valve Seats Machined | Yes |
| Valve Seat Material | Powdered Metal |
| Valve Stem Seals Included | Yes |
| Valve Stem Seal Type | Positive Stop |
| Valve Guides Included | Yes |
| Valve Guide Material | Manganese Bronze |
| Locks Included | Yes |
| Lock Style | 7 Degree |
| Retainers Included | Yes |
| Retainer Material | Chromoly Steel |
| Guideplates Included | Yes |
| Guideplate Pushrod Size | 0.312" |
| Rocker Arms Included | No |
| Rocker Arm Nuts Included | No |
| Oiling Style | Through Pushrod |
| Heat Crossover | No |
| Steam Holes Drilled | No |
| Accessory Bolt Holes Drilled | No |
| Valve Cover Mounting Style | Center and Perimeter Bolt |
| Notes | Bare head weighs 19.6 lbs. each. |
| Sold in Quantity | Each |
Ratings & Reviews
4.7
20 Reviews
Customers praise our product for its classic look, improved characteristics, and functionality, making it a preferred choice. Rated positively for its reasonable weight, satisfactory flow, and visual appeal, our product outperforms cheaper alternatives. It serves as a great replacement for original models, offering enhanced performance efficiencies amidst shedding weight. Customers recommend our product for its cost-effectiveness, superior quality, and contributions to an engine's overall functionality. Those in the process of car or engine restorations highly regard our product. Despite isolated cases of valve leaks, customers are largely satisfied and impressed by its performance and are open to repurchasing.
Ratings & Reviews
4.7
20 Reviews
Customers praise our product for its classic look, improved characteristics, and functionality, making it a preferred choice. Rated positively for its reasonable weight, satisfactory flow, and visual appeal, our product outperforms cheaper alternatives. It serves as a great replacement for original models, offering enhanced performance efficiencies amidst shedding weight. Customers recommend our product for its cost-effectiveness, superior quality, and contributions to an engine's overall functionality. Those in the process of car or engine restorations highly regard our product. Despite isolated cases of valve leaks, customers are largely satisfied and impressed by its performance and are open to repurchasing.
4.6
20 reviews
5
16
4
3
3
0
2
0
1
1
Most Liked Positive Review
5.0
These Will Look Great On My 26/27 T Roadster
These will be going on a 400 sbc for my 26/27 T roadster. It's a small open car so I don't need the accessory holes for power steering and AC. I choose them primarily for the classic look and improved characteristics. I am planning on painting them to match the car and since they don't have the square machined billet look, I feel they were the best choice for the money.
Most Liked Negative Review
1.0
i would not buy again
junk valves leak
Filter by Ratings
Yes
5.0
a month ago
Terry
PA.
Verified
They are going on my 327 C.I. Corvette rebuild
Would Recommend
This is my second set of these heads that I have puchased.
5.0
a year ago
Joe
Arkansas
Verified
I have these on my 1964 Impala SS. The heads gives it that OEM look.
Would Recommend
Just this ounce!
5.0
a year ago
Greg
Mayer,AZ
Verified
On a 327.
Would Recommend
Good look for a old school muscle car.
5.0
a year ago
Vicious
AZ
Verified
I have not installed these heads yet. In AZ it's too hot to tackle this project.
These Will Look Great On My 26/27 T Roadster
5.0
2 years ago
Silverstreak232
Lebanon Co, PA
Verified
These will be going on a 400 sbc for my 26/27 T roadster. It's a small open car so I don't need the accessory holes for power steering and AC. I choose them primarily for the classic look and improved characteristics. I am planning on painting them to match the car and since they don't have the square machined billet look, I feel they were the best choice for the money.
Would Recommend
Nice set of heads; very happy w/ this purchase
4.0
2 years ago
RVA
Richmond, VA
I'm not going to blow smoke. 3 main reasons were weight, flow and look. Yes there are cheaper options but not that satisfied my 3 requirements. Had to get new springs for a roller conversion. They are on a 350 .060 over and no problems. This is a street 1960's period car, not a race car. Used Eastwood's 2K Chevy orange and no issues at 500 miles.
Would Recommend
yes
5.0
2 years ago
Wayne
winston-salem NC.
Verified
street car restoration
Would Recommend
461 Speedway Double hump heads
5.0
2 years ago
Eman
Essex, Maryland
Verified
Great product to build a high taching 327. Great replacement for the original 461's
Looks like the Original Camel hump heads
5.0
2 years ago
Lloyd
Raymond, NE
Verified
Using these heads on a 327. Replaced a set of original 2.02 camel hump heads. Shed some weight and a better heat sink with better flow.
Would Recommend
Great bang for the buck,with factory looks.
5.0
3 years ago
Smitty
Alabama
Verified
Good product at great price from awesome company.
Would Recommend
Showing 10 of 20 reviews
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1987 Chevy V10
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1987 Chevy V20
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1987-1988 Chevy V20 Suburban
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1987-1988 Chevy V30
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1989-1991 Chevy V3500
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1967-1968 GMC C15/C1500 Pickup
327 Chevy Small Block V8
1967 GMC C15/C1500 Suburban
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1968 GMC C15/C1500 Suburban
327 Chevy Small Block V8
1980-1984 GMC C1500
2-Piece Rear Main Chevy 350
1980-1986 GMC C1500 Suburban
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1967-1972 GMC C25/C2500 Pickup
Gen 1 L46 Small Block Chevy
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Gen 1 L65 Small Block Chevy
Gen 1 L81 Small Block Chevy
Gen 1 L82 Small Block Chevy
1967-1972 GMC C25/C2500 Suburban
Gen 1 L46 Small Block Chevy
Gen 1 L48 Small Block Chevy
Gen 1 L65 Small Block Chevy
Gen 1 L81 Small Block Chevy
Gen 1 L82 Small Block Chevy
1967-1974 GMC C35/C3500 Pickup
Gen 1 L46 Small Block Chevy
Gen 1 L48 Small Block Chevy
Gen 1 L65 Small Block Chevy
Gen 1 L81 Small Block Chevy
Gen 1 L82 Small Block Chevy
1978-1987 GMC Caballero
2-Piece Rear Main Chevy 350
1963-1966 GMC G1000 Series
327 Chevy Small Block V8
1975-1978 GMC G15
2-Piece Rear Main Chevy 350
1967-1974 GMC G15/G1500 Van
2-Piece Rear Main Chevy 350
1964-1966 GMC G1500
327 Chevy Small Block V8
1979-1986 GMC G1500
2-Piece Rear Main Chevy 350
1987-1995 GMC G1500
Gen 1 L05 Small Block Chevy
1975-1978 GMC G25
2-Piece Rear Main Chevy 350
1967-1974 GMC G25/G2500 Van
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2-Piece Rear Main Chevy 350
1967 GMC G35/G3500 Van
2-Piece Rear Main Chevy 350
1970-1974 GMC G35/G3500 Van
2-Piece Rear Main Chevy 350
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2-Piece Rear Main Chevy 350
1987-1994 GMC G3500
Gen 1 L05 Small Block Chevy
1995-1996 GMC G3500
Gen 1 L05 Small Block Chevy
Gen 1 L98 Small Block Chevy
1964-1966 GMC I1000
327 Chevy Small Block V8
1965-1966 GMC I1500
327 Chevy Small Block V8
1965-1966 GMC I2500
327 Chevy Small Block V8
1966 GMC I3500
327 Chevy Small Block V8
1974-1977 GMC Jimmy
2-Piece Rear Main Chevy 350
1983-1984 GMC Jimmy
2-Piece Rear Main Chevy 350
1986 GMC Jimmy
Gen 1 L05 Small Block Chevy
1987 GMC Jimmy
Gen 1 L05 Small Block Chevy
Gen 1 L98 Small Block Chevy
1988-1990 GMC Jimmy
Gen 1 L05 Small Block Chevy
1966 GMC K1000
327 Chevy Small Block V8
1966 GMC K1000 Pickup
327 Chevy Small Block V8
1975-1978 GMC K15
Gen 1 L46 Small Block Chevy
Gen 1 L48 Small Block Chevy
Gen 1 L65 Small Block Chevy
Gen 1 L81 Small Block Chevy
Gen 1 L82 Small Block Chevy
1975-1978 GMC K15 Suburban
Gen 1 L46 Small Block Chevy
Gen 1 L48 Small Block Chevy
Gen 1 L65 Small Block Chevy
Gen 1 L81 Small Block Chevy
Gen 1 L82 Small Block Chevy
1966 GMC K15/K1500 Pickup
327 Chevy Small Block V8
1967-1974 GMC K15/K1500 Pickup
Gen 1 L46 Small Block Chevy
Gen 1 L48 Small Block Chevy
Gen 1 L65 Small Block Chevy
Gen 1 L81 Small Block Chevy
Gen 1 L82 Small Block Chevy
1967-1974 GMC K15/K1500 Suburban
Gen 1 L46 Small Block Chevy
Gen 1 L48 Small Block Chevy
Gen 1 L65 Small Block Chevy
Gen 1 L81 Small Block Chevy
Gen 1 L82 Small Block Chevy
1979-1984 GMC K1500
2-Piece Rear Main Chevy 350
1979-1980 GMC K1500 Suburban
Gen 1 L46 Small Block Chevy
Gen 1 L48 Small Block Chevy
Gen 1 L65 Small Block Chevy
Gen 1 L81 Small Block Chevy
Gen 1 L82 Small Block Chevy
1981-1986 GMC K1500 Suburban
Gen 1 L05 Small Block Chevy
Gen 1 L98 Small Block Chevy
1975-1978 GMC K25
Gen 1 L46 Small Block Chevy
Gen 1 L48 Small Block Chevy
Gen 1 L65 Small Block Chevy
Gen 1 L81 Small Block Chevy
Gen 1 L82 Small Block Chevy
1975-1978 GMC K25 Suburban
Gen 1 L46 Small Block Chevy
Gen 1 L48 Small Block Chevy
Gen 1 L65 Small Block Chevy
Gen 1 L81 Small Block Chevy
Gen 1 L82 Small Block Chevy
1967-1974 GMC K25/K2500 Pickup
Gen 1 L46 Small Block Chevy
Gen 1 L48 Small Block Chevy
Gen 1 L65 Small Block Chevy
Gen 1 L81 Small Block Chevy
Gen 1 L82 Small Block Chevy
1967-1974 GMC K25/K2500 Suburban
Gen 1 L46 Small Block Chevy
Gen 1 L48 Small Block Chevy
Gen 1 L65 Small Block Chevy
Gen 1 L81 Small Block Chevy
Gen 1 L82 Small Block Chevy
1979-1984 GMC K2500
2-Piece Rear Main Chevy 350
1986 GMC K2500
Gen 1 L05 Small Block Chevy
1979-1986 GMC K2500 Suburban
Gen 1 L46 Small Block Chevy
Gen 1 L48 Small Block Chevy
Gen 1 L65 Small Block Chevy
Gen 1 L81 Small Block Chevy
Gen 1 L82 Small Block Chevy
1992-1993 GMC K2500 Suburban
Gen 1 L05 Small Block Chevy
1994-1999 GMC K2500 Suburban
Gen 1 L46 Small Block Chevy
Gen 1 L48 Small Block Chevy
Gen 1 L65 Small Block Chevy
Gen 1 L81 Small Block Chevy
Gen 1 L82 Small Block Chevy
1967-1974 GMC K35/K3500 Pickup
Gen 1 L46 Small Block Chevy
Gen 1 L48 Small Block Chevy
Gen 1 L65 Small Block Chevy
Gen 1 L81 Small Block Chevy
Gen 1 L82 Small Block Chevy
1988-1991 GMC R1500 Suburban
Gen 1 L98 Small Block Chevy
1973-1977 GMC Sprint
Gen 1 LM1 Small Block Chevy
1960-1966 GMC Suburban
Gen 1 L76 Small Block Chevy
1967 GMC Suburban
Gen 1 L46 Small Block Chevy
Gen 1 L76 Small Block Chevy
1987-1991 GMC V1500 Suburban
350 Chevy Small Block V8
Gen 1 L05 Small Block Chevy
Gen 1 L98 Small Block Chevy
1987 GMC V2500
350 Chevy Small Block V8
Gen 1 L05 Small Block Chevy
Gen 1 L98 Small Block Chevy
1987-1991 GMC V2500 Suburban
350 Chevy Small Block V8
Gen 1 L05 Small Block Chevy
Gen 1 L98 Small Block Chevy
1987-1991 GMC V3500
350 Chevy Small Block V8

