Holley Intake Manifold, Hi-Ram EFI 102MM TB for LS1, LS2 & LS6, Part #300-123

Base Plenum Top Mounting Flange Height ???›???›??????? 8.42???›???›???? to the lifter valley cover flange on engine block. Total Height with 92/105mm EFI Plenum Top ???›???›??????? 12.32???›???›???? to the lifter valley cover flange on engine block. Runner Length ???›???›??????? 6.58???›???›????, As-Cast Runner Cross-Sectional Area ???›???›??????? Tapered 4.25 in???›?? to 2.53 in???›?? Throttle Body Flange Location, with 92/102mm EFI Plenum Top : Height ???›???›??????? 8.42???›???›???? (from engine block lifter valley cover flange), Longitudinal Location ???›???›??????? 3.84???›???›???? (forward from engine block front flange), Angle ???›???›??????? 25 deg. (down from vertical) Plenum Top Gasket Type ???›???›??????? 3/32???›???›???? Round O-ring Cord Mounting Flange Gasket Type ???›???›??????? Standard LS3 Molded O-Ring Port Size ???›???›??????? 2.49???›???›???? Height x 1.21???›???›???? Wide