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Speedmaster black-oxide coated chromoly intake manifold bolts are rated at 170
Permanent molds provide a tighter grain casting thereby reducing the occurrence of porosity which can mar the polished finish
If the spark is weak at the plug
they replace your existing worn or damaged valve guides
Features accurate magnetic pickup that never requires adjustment along with an easy-to-adjust mechanical advance mechanism
Chevy GM LS3 L92 Guide Plates 5/16" Pushrod 1 Piece Set of 8 Speedmaster black-oxide coated chromoly intakeYou need guideplates to keep your pushrods from deflecting under high rpm conditions. That's just what our Speedmaster guideplate sets do, they are made from 5140 Chromoly steel, nitrided and black oxide coated for corrosion and wear resistance.
