Chevrolet Ls7 Ls3 291cc 69cc New Assembled Aluminum Cylinder Heads Pro Header on 2040-parts.com
Fresno, California, United States
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Hello This auction is for a new pair,(2) Pro header LS cylinder heads for LS3 LS7 CHEVROLET ENGINES. Heads have huge square 291cc intake runners and 69cc combustion chambers. These Heads are much better than stock GM heads, you will get easily 75-80hp gains or more!! These are new head castings that 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 cookie cutter mentality!!. 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, they are a great replacement for stock heads in your Z06 Corvette or any vehicle with an LS7/LS3 block. All specs are listed as follows, Chevy LS3 LS7 291cc 69cc Assembled Aluminum Cylinder Heads
The LS7 heads are only compatible with LS3 blocks when the bore is 4.100" or larger. Please check your bore sizes on LS3 applications before purchasing. These heads are assembled and have 150 pounds closed seat pressure. If that is too much you can remove the inner spring and that will put you at 120 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 |
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