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Cylinder Heads - Holley

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Holley Overview:

Holley began in Bradford, Pennsylvania in 1896 when two brothers by the name of George and Earl Holley started a company to produce a small one cylinder three-wheeled vehicle they dubbed the Runabout, with a top speed of 30 mph. In 1903, at the eve of the era of motorcars, the brothers decided to start the Holley Motor Company, and produced one model, the Motorette. Henry Ford, impressed by this, asked the brothers to produce a carburetor for his Model T. Additionally, the carburetor, nicknamed the Iron Pot, was also used on Ford rival Oldsmobile's vehicles. By this time, the company had moved to Detroit, Michigan and became The Holley Brothers Company. The brothers returned their focus on the manufacturing of carburetors and ignition systems. Today's Holley is a diversified aftermarket performance powerhouse.

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Chev Cylinder Head Set - Engine Cylinder Head

Brand: Holley

Part #: 300-552-1

Requires A Spark Plug w/A 0.75 in. Reach & A Flat Seat.

Starting At
$795.00

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Chevy Head Bolts - Engine Cylinder Head Bolt Set

Brand: Holley

Part #: 301-35

* Includes ARP hardened head bolts and washers * Designed for Holley aluminum cylinder headsThis kit consists of the same top quality ARP brand hardened head bolts and washers used in the SysteMAX II kit. ARP is a name you can trust for even... more

Starting At
$72.40

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300-570 from Holley

SB CHEV CYL HEADS 916 Cylinder Head Angled Spark Plug; 23 deg. Valve Angle; 2.02 in. Intake valve Dia.; Stud Rocker Arm Mounting

Brand: Holley

Part #: 300-570

Requires A Spark Plug w/A 0.75 in. Reach & A Flat Seat.

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300-569 from Holley

SB CHEV CYL HEADS 9/16 Cylinder Head Straight Spark Plug; 23 deg. Valve Angle; 2.02 in. Intake Valve Dia.; Stud Rocker Arm Mounting

Brand: Holley

Part #: 300-569

Requires A Spark Plug w/A 0.75 in. Reach & A Flat Seat.

Click for price

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300-560 from Holley

BBC RECT PORT W/O EX Cylinder Head Straight Spark Plug Angle; 24.5 deg. Valve Angle; 21.9 in. Intake Valve Dia.; Rectangular Port

Brand: Holley

Part #: 300-560

Requires A Spark Plug w/A 0.75 in. Reach & A Flat Seat.

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GM BBC CYL HDS RP ASSY Cylinder Head Straight Spark Plug Angle; 24.5 deg. Valve Angle; 2.25 in. Intake Valve Dia.; Rectangular Port

Brand: Holley

Part #: 300-555

Requires A Spark Plug w/A 0.75 in. Reach & A Flat Seat.A -Bare- Version Of This Head Can Be Ordered Under PN[300-565]

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SBC CYL HD RACE Cylinder Head Angled Spark Plug; 23 deg. Valve Angle; 2.10 in. Intake Valve Dia.; Shaft Rocker Arm Mounting

Brand: Holley

Part #: 300-581

Requires A Spark Plug w/A 0.75 in. Reach & A Flat Seat.Intake Ports Are -Raised- & Req. Mnfld PN[300-102/300-105] Or PN[9901-119]

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300-578 from Holley

SB FORD CYL HEADS 5/8 Cylinder Head Angled Spark Plug; 20 deg. Valve Angle; 2.02 in. Intake Valve Dia.; Pedestal Rocker Arm Mounting

Brand: Holley

Part #: 300-578

Requires A Spark Plug w/A 0.75 in. Reach & A Flat Seat.

Click for price

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300-579 from Holley

SB FORD CYL HEADS 5/8 Cylinder Head Angled Spark Plug; 20 deg. Valve Angle; 2.02 in. Intake Valve Dia.; Stud Rocker Arm Mounting

Brand: Holley

Part #: 300-579

Requires A Spark Plug w/A 0.75 in. Reach & A Flat Seat.

Click for price

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300-576 from Holley

SB FORD CYL HEADS 5/8 Cylinder Head Angled Spark Plug; 20 deg. Valve Angle; 1.90 in. Intake Valve Dia.; Pedestal Rocker Arm Mounting

Brand: Holley

Part #: 300-576

Requires A Spark Plug w/A 0.75 in. Reach & A Flat Seat.

Click for price

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300-577 from Holley

SB FORD CYL HEADS 5/8 Cylinder Head Angled Spark Plug; 20 deg. Valve Angle; 1.90 in. Intake Valve Dia.; Stud Rocker Arm Mounting

Brand: Holley

Part #: 300-577

Requires A Spark Plug w/A 0.75 in. Reach & A Flat Seat.

Click for price

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300-571 from Holley

SB CHEV CYL HEADS 9/16 Cylinder Head Straight Spark Plug; 23 deg. Valve Angle; 2.02 in. Intake Valve Dia.; 0.563 Deck Thickness; Stud Rocker Arm Mounting

Brand: Holley

Part #: 300-571

Requires A Spark Plug w/A 0.75 in. Reach & A Flat Seat.

Click for price

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GM BBC CYL HDS RP BARE Avenger; Bare Cylinder Head

Brand: Holley

Part #: 300-565

Click for price

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FORD HEAD AIR PLUG KIT SysteMAX; Cylinder Head Air Passage Plug Kit

Brand: Holley

Part #: 26-127

Click for price

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Chev Cyl Head Bolt Kit - Engine Cylinder Head Bolt Set

Brand: Holley

Part #: 301-38

* Includes ARP hardened head bolts and washers * Designed for Holley aluminum cylinder headsThis kit consists of the same top quality ARP brand hardened head bolts and washers used in the SysteMAX II kit. ARP is a name you can trust for even... more

Starting At
$191.40

+ Add To List

Bbc Oval Port W/ex - Engine Cylinder Head

Brand: Holley

Part #: 300-556

Requires A Spark Plug w/A 0.75 in. Reach & A Flat Seat.

Starting At
$2262.40

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Ford (1/2in.) Cyl Head Set - Engine Cylinder Head

Brand: Holley

Part #: 300-551-2

Requires A Spark Plug w/A 0.75 in. Reach & A Flat Seat.

Starting At
$1570.40

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Sb Ford Cyl Heads 1/2in. - Engine Cylinder Head

Brand: Holley

Part #: 300-575

Requires A Spark Plug w/A 0.75 in. Reach & A Flat Seat.

Starting At
$1274.99

+ Add To List

Sb Ford Cyl Heads 1/2in. - Engine Cylinder Head

Brand: Holley

Part #: 300-574

Requires A Spark Plug w/A 0.75 in. Reach & A Flat Seat.

Starting At
$1517.78

+ Add To List

Sb Ford Cyl Heads 1/2in. - Engine Cylinder Head

Brand: Holley

Part #: 300-573

Requires A Spark Plug w/A 0.75 in. Reach & A Flat Seat.

Starting At
$1570.40

+ Add To List

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