Atech Motorsports

Edelbrock Oldsmobile 400-455 c.i. Performer RPM Cylinder Heads, Assembled, Hydraulic Roller

$1,223.99 USD

Sale Sold out

Product variants

Quantity

Brand:

Edelbrock

Manufacturer's Part Number:

61025

Part Type:

Cylinder Heads

Product Line:

Edelbrock Performer RPM Cylinder Heads

UPC:

00085347610259

Combustion Chamber Volume (cc):

Intake Runner Volume (cc):

218cc

Exhaust Runner Volume (cc):

128cc

Cylinder Head Style:

Assembled

Cylinder Head Material:

Cast aluminum

Intake Port Shape:

Rectangular

Intake Valve Diameter (in.):

2.150 in.

CNC-Machined Combustion Chamber:

CNC-Machined Intake Runner:

CNC-Machined Exhaust Runner:

Combustion Chamber Style:

Heart

Intake Port Location:

Standard

Exhaust Port Shape:

Square

Exhaust Port Location:

Standard

Intake Valves Included:

Yes

Exhaust Valves Included:

Yes

Exhaust Valve Diameter (in.):

1.680 in.

Valve Springs Included:

Yes

Maximum Valve Lift (in.):

0.600 in.

Camshaft Style:

Hydraulic roller

Outside Diameter of Outer Spring (in.):

1.460 in.

Damper Spring Included:

Yes

Number of Springs Per Valve:

Dual

Retainers Included:

Yes

Retainer Material:

Steel

Locks Included:

Yes

Lock Style:

7 degree

Valve Stem Seals Included:

Yes

Valve Stem Seal Style:

Positive stop

Rocker Arm Studs Included:

Yes

Rocker Arm Nut Thread Size:

7/16 in.-20

Rocker Arms Included:

Rocker Arm Nuts Included:

Guideplates Included:

Yes

Guideplate Pushrod Size:

3/8 in.

Valve Cover Mounting Style:

Perimeter bolt

Accessory Bolt Holes Drilled:

Yes

Intake Valve Angle:

Valve Guides Included:

Yes

Valve Guide Material:

Manganese bronze

Valve Seats Machined:

Valve Seat Machine Style:

3-angle

Valve Seat Material:

Ductile iron

Cylinder Head Color:

Natural

Steam Holes Drilled:

Oiling Style:

Through pushrod

Machined for O-Ring:

Heat Crossover:

Remanufactured:

Quantity:

Sold individually.

Special Attention:

For use with hydraulic roller camshafts. Recommended for applications with a minimum of 4.125 in. bore spacing

Edelbrock Performer RPM Cylinder Heads

Edelbrock Performer RPM aluminum cylinder heads feature threaded inserts in the rocker studs and exhaust manifold bolt holes for superior strength and durability. They also include hardened seats, bronze valve guides, and fully machined valve cover rails for a more consistent gasket seal. These heads offer improved power throughout the RPM range for greater throttle response and top-end horsepower. Countless options are available; order the model recommended for your vehicle and engine application.

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