Edelbrock Performer LT1 Cylinder Heads 61905

These Edelbrock Performer LT1 cylinder heads are designed for the 1992-97 LT1 engines. They produce approximately 24 hp more than factory-stock LT1 heads, and raise peak power levels by 500 rpm. They work with stock or aftermarket self-aligning roller rocker arms. These Edelbrock Performer LT1 aluminum cylinder heads feature threaded inserts in the rocker studs and exhaust manifold bolt holes for superior strength and durability, plus hardened seats, bronze valve guides, and fully machined valve cover rails for a more consistent gasket seal. They offer improved power throughout the rpm range for greater throttle response and top-end horsepower. The intake and exhaust runners are CNC-machine profiled for superior flow and performance.Brand: Edelbrock
Manufacturer's Part Number: 61905
Part Type: Cylinder Heads
Product Line: Edelbrock Performer LT1 Cylinder Heads
HP Direct Part Number: EDL-61905
UPC: 085347619054
Combustion Chamber Volume (cc): 54
Intake Runner Volume (cc): 170cc
Exhaust Runner Volume (cc): 60cc
Cylinder Head Style: Assembled
Cylinder Head Material: Cast aluminum
Camshaft Style: Hydraulic roller
Intake Port Shape: Rectangular
Intake Valve Diameter (in.): 1.940 in.
CNC-Machined Combustion Chamber: No
CNC-Machined Intake Runner: No
CNC-Machined Exhaust Runner: No
Intake Port Location: Standard
Exhaust Port Location: Standard
Intake Valves Included: Yes
Exhaust Valves Included: Yes
Exhaust Valve Diameter (in.): 1.550 in.
Valve Springs Included: Yes
Maximum Valve Lift (in.): 0.600 in.
Outside Diameter of Outer Spring (in.): 1.460 in.
Damper Spring Included: Yes
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: Positive stop
Rocker Arm Studs Included: Yes
Rocker Arm Nut Thread Size: 3/8 in.-24
Rocker Arms Included: No
Rocker Arm Nuts Included: No
Guideplates Included: No
Guideplate Pushrod Size: 5/16 in.
Valve Cover Mounting Style: Centerbolt
Accessory Bolt Holes Drilled: Yes
Intake Valve Angle: 23
Valve Guides Included: Yes
Valve Guide Material: Manganese bronze
Valve Seats Machined: Yes
Valve Seat Machine Style: 3-angle
Valve Seat Material: Ductile iron
Cylinder Head Color: Natural
Steam Holes Drilled: No
Oiling Style: Through pushrod
Machined for O-Ring: No
Heat Crossover: No
Remanufactured: No
Quantity: Sold individually.