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Price: $2799.99
GM 3946074 BB Chevy Aluminum Cylinder Heads, Complete, Pair,
112cc Chambers, 2.190" Intake/1.880" Exhaust, NEW Manley Valves,
New Springs, Retainers & Locks, 7/16" Rocker Studs, 3/8" Guide Plates,
Springs: 135lbs @ 1.850", 325lbs @ .500" Lift, 350lbs @ .550" Lift,
Valve Job, Guide Work and Fresh Surface all Done,
Dated: 6-19-1970 & ?-?-1972,
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