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. Valve Job: Seat Pressures: Seat Pressure W/O Inner Spring. Yes Closed 145 Closed 115.
Yes Double Springs up to. Parts 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 Locks. New 312 Positive Control Seals. Springs, Engine: LS3/L72/L92 LS7 Number Of Coils: Dual Spring.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.
OVER 900HP POTENTIAL with THESE HEADS Damper Spring: No Overall Diameter: 1.320 OD Inside Diameter. 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. We do the CNC maching and assembly. These heads are comparable to Dart world AFR speedmaster pro comp Edelbrock GM.
The item "Chevrolet LS3 L76 L92 LS2 255cc 64cc Assembled Aluminum Cylinder Head Pro Header" is in sale since Monday, August 7, 2017. This item is in the category "eBay Motors\Parts & Accessories\Performance & Racing Parts\Auto Performance Parts\Engine & Components\Cylinder Heads". The seller is "seperformance5" and is located in Fresno, California. This item can be shipped to United States, Canada, United Kingdom, Denmark, Romania, Slovakia, Bulgaria, Czech republic, Finland, Hungary, Latvia, Lithuania, Malta, Estonia, Australia, Greece, Portugal, Cyprus, Slovenia, Japan, China, Sweden, South Korea, Indonesia, Taiwan, South africa, Thailand, Belgium, France, Hong Kong, Ireland, Netherlands, Poland, Spain, Italy, Germany, Austria, Bahamas, Israel, Mexico, New Zealand, Singapore, Switzerland, Norway, Saudi arabia, Ukraine, United arab emirates, Qatar, Kuwait, Bahrain, Croatia, Malaysia, Brazil, Chile, Colombia, Costa rica, Panama, Trinidad and tobago, Guatemala, Honduras, Jamaica, Iceland, Martinique, Oman, Viet nam.