Hello, This auction is for a Pair (2) of Bare LS3 Aluminum Cylinder Heads. These are our own castings that we CNC machine in house which is why we have zero issues with our heads. The heads have all bolt holes for stock brackets already drilled for ease and you don't have to run any special brackets for your accessories. Specs are as Follows:

Part Type:	Cylinder Heads

Cylinder Head Style:	Bare
Cylinder Head Material:	Aluminum
Cylinder Head Finish:	Natural
Combustion Chamber Volume (cc):	64 cc
CNC-Machined Combustion Chamber:	No
Intake Runner Volume (cc):	255 cc

CNC-Machined Intake Runner:	No
CNC-Machined Exhaust Runner:	No
Intake Port Shape:	Rectangle
Intake Port Location:	Standard
Exhaust Port Shape:	Oval
Exhaust Port Location:	Standard
Comp. Valve Job: Seat Pressures: Seat Pressure W/O Inner Spring:	Yes 0 0
Intake Valves Included:	No
Intake Valve Diameter (in):	2.165 in.
Exhaust Valves Included:	No
Exhaust Valve Diameter (in):	1.600 in.
Valve Springs Included:	No

Retainers Included:	No
Locks Included:	No
Valve Stem Seals Included:	No
Rocker Arm Studs Included:	No
Rocker Arms Included:	No
Rocker Arm Nuts Included:	No
Guideplates Included:	No
Valve Cover Mounting Style:	Perimeter Bolt
Accessory Bolt Holes Drilled:	Yes
Intake Valve Angle:	45 deg.
Exhaust Valve Angle:	45 deg.
Valve Guides Included:	Yes
Valve Guide Material:	Bronze
Valve Seats Machined:	Yes
Valve Seat Machine Style:	3-angle
Valve Seat Material:	Ductile iron

Oiling Style:	Through pushrod
Machined for O-Ring:	No
Heat Crossover:	No
Quantity:	Sold in Sets of Two

MANUFACTURE FLOW # @28 in

Lift Intake Exhaust

.100 71.5 59.1

.200 158.7 123.2

.300 229.8 174.1

.400 290.6 218.4

.500 327.3 240.4

.600 359.5 252.5

.700 377.4 260.6

If you have any questions or want to know information on the heads please feel free to contact me via the ebay messenger app. Thanks for looking!!