Chevrolet Performance Vortec Cylinder Heads 12558060

Name: Chevrolet Performance Vortec Cylinder Heads
Brand: Chevrolet Performance
SKU: NAL-12558060
Price: 691.75 USD
Availability: OutOfStock
Rating: 4.5 (26 reviews)

4.5 out of 5 stars ( 26 )

Part Number: NAL-12558060

Not Available

Chevrolet Performance Vortec Cylinder Heads

Cylinder Head, Vortec, Cast Iron, Assembled, 64cc Chamber, 170cc Intake Runner, Chevy, Small Block, Each
See More Specifications

Chevrolet Performance Vortec Cylinder Heads 12558060

NAL-12558060

4.5 out of 5 stars ( 26 )

Part Number: NAL-12558060

Not Available

Overview

Q&A

Reviews

Instructions & Calculators

Overview

Brand:

Chevrolet Performance

Manufacturer's Part Number:

12558060

Part Type:

Cylinder Heads

Product Line:

Chevrolet Performance Vortec Cylinder Heads

Summit Racing Part Number:

NAL-12558060

Combustion Chamber Volume (cc):

Intake Runner Volume (cc):

170cc

Cylinder Head Style:

Assembled

Cylinder Head Material:

Cast iron

Intake Port Shape:

Rectangular

Intake Valve Diameter (in.):

1.940 in.

CNC-Machined Combustion Chamber:

CNC-Machined Intake Runner:

CNC-Machined Exhaust Runner:

Intake Port Location:

Standard

Exhaust Port Shape:

Square

Exhaust Port Location:

Standard

Spark Plug Style:

Straight

Intake Valves Included:

Yes

Exhaust Valves Included:

Yes

Exhaust Valve Diameter (in.):

1.500 in.

Valve Springs Included:

Yes

Maximum Valve Lift (in.):

0.475 in.

Outside Diameter of Outer Spring (in.):

1.250 in.

Damper Spring Included:

Number of Springs Per Valve:

Single

Retainers Included:

Yes

Retainer Material:

Steel

Locks Included:

Yes

Lock Style:

7 degree

Valve Stem Seals Included:

Yes

Valve Stem Seal Style:

Umbrella

Rocker Arm Studs Included:

Yes

Rocker Arm Nut Thread Size:

3/8 in.-24

Rocker Arms Included:

Rocker Arm Nuts Included:

Guideplates Included:

Accessory Bolt Holes Drilled:

Yes

Valve Guides Included:

Yes

Valve Seats Machined:

Yes

Valve Seat Material:

Steel

Cylinder Head Color:

Natural

Steam Holes Drilled:

Oiling Style:

Through pushrod

Machined for O-Ring:

Heat Crossover:

Remanufactured:

Quantity:

Sold individually.

Notes:

Requires Vortec-style intake manifold for installation.

Chevrolet Performance Vortec Cylinder Heads

Chevrolet Performance cast iron Vortec cylinder heads will fit 1958 and later small block Chevy engines, and offer a 20 to 40 hp increase over earlier cast iron small block heads. Features include fast burn combustion chambers, and a high-velocity port design. They require the use of a Vortec-style intake and self-aligning rocker arms, and come complete with valves, springs, and retainers.