Chevrolet LS3 L76 L92 LS2 255cc 64cc Assembled Aluminum Cylinder Head Pro Header

Description: Hello This auction is for a new pair,(2) Pro header LS cylinder heads for LS3 LS6 LS7 L76 L72 L92 LS2 CHEVROLET ENGINES.Heads have huge rectangle 255cc intake runners and 64cc combustion chambers. These Heads are much better than stock GM heads, you will get easily 75-80hp gains or more!! These new heads castings WE CNC Machine and assemble, that is why and how we have no issues!!, bolt on performance and reliability!. Heads are Brand new and all components are brand new parts with no corners cut! We sell a lot of heads making small dollars with a lot of sales to make big dollars we want a lot of users happy!!. Please look close at all the pictures you can see we do all CNC Machine work in house!! with expert people who assemble the heads for trouble free service. Heads have all bolts holes for all stock accessory brackets, no special brackets needed, no special intakes or exhaust needed, run Stock stuff or aftermarket parts with no problems and great performance!!. These heads fit all GM blocks, All specs are listed as follows, Chevy LS3 LS6 LS7 L72 L76 L92 LS2 255cc 64cc Assembled Aluminum Cylinder Heads Part Type:Cylinder Heads Cylinder Head Style:AssembledCylinder Head Material:AluminumCylinder Head Finish:NaturalCombustion Chamber Volume (cc):64 ccCNC-Machined Combustion Chamber:NoIntake Runner Volume (cc): 255 cc CNC-Machined Intake Runner: NoCNC-Machined Exhaust Runner: NoIntake Port Shape: RectangleIntake Port Location: StandardExhaust Port Shape: OvalExhaust Port Location: StandardComp. Valve Job: Seat Pressures: Seat Pressure W/O Inner Spring:Yes Closed 145 Closed 115Intake Valves Included: YesIntake Valve Diameter (in): 2.165 in.Exhaust Valves Included: YesExhaust Valve Diameter (in): 1.600 in. Valve Springs Included: Yes (Double Springs up to .680 lift) Retainers Included: YesLocks Included: YesValve Stem Seals Included: Yes Rocker Arm Studs Included: No Rocker Arms Included: No Rocker Arm Nuts Included: No Guideplates Included: No Valve Cover Mounting Style: Perimeter BoltAccessory 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: YesValve Seat Machine Style: 3-angleValve Seat Material: Ductile iron Oiling Style: Through pushrod Machined for O-Ring: No Heat Crossover: NoQuantity:Sold in Sets of TwoParts Used in Assembly as follows: 1.600" one piece swirl polished stainless steel severe duty exhaust valves (Qualcast)2.165" one piece swirl polished stainless steel severe duty intake valves (Qualcast)1.320" OD X 2.235 True Double Springs (Qualcast)New Hardened 1.300 Retainers 7°New Hardened 312 Valve LocksNew 312 Positive Control SealsNew .015" Valve ShimSprings, Engine: LS3/L72/L92 LS7 Number Of Coils: Dual SpringMANUFACTURE FLOW # @28 inLift Intake Exhaust.100 71.5 59.1.200 158.7 123.2.300 229.8 174.1.400 290.6 218.4.500 327.3 240.4.600 359.5 252.5.700 377.4 260.6OVER 900HP POTENTIAL with THESE HEADS Damper Spring: No Overall Diameter: 1.320" OD Inside Diameter: .676" ID Spring Height: 1.800" Seat Pressure: 145 lbs @ 1.800" Open Pressure: 385 lbs. @ 1.150" Coil Bind: 1.100" Spring Rate (lbs./in.): 375 lbs/in Max Lift: .680"These heads are assembled and have 145 pounds closed seat pressure. If that is too much you can remove the inner spring and that will put you at 115 Pounds closed seat pressure which is more for a stock replacement. No beehive springs here!! We do the CNC maching and assembly. These heads are comparable to Dart world AFR speedmaster pro comp Edelbrock GM. Thanks for looking Please feel free to ask any and all questions directly thru ebay messaging system, I will answer all questions, I want you happy!!. I cant include personal contact information its against ebay policy, After purchase on ebay we can exchange contact information as needed.

Price: 1119.99 USD

Location: Fresno, California

End Time: 2024-02-07T23:23:55.000Z

Shipping Cost: 175 USD