aeroflow's small block chevy cylinder heads are designed for entry-level street performance engines and ideal for operating in the idle to 6500 rpm range. made from a356 aluminium castings.
these complete heads include larger-than-stock 1.43" (36.3mm) diameter valve spring with damper to handle up to 0.575" (14.61mm) maximum valve lift. recommended spark plugs are 14mm x 3/4" reach with flat gasket seat.head specs:
chamber volume: 64cc chamberÃƒÂ¢Ã‚Â
intake port volume: 180cc or 200cc
intake valve size: 2.02"ÃƒÂ¢Ã‚Â
exhaust valve size: 1.60"
valve spring diameter: single spring with damper 1.430" (36.3mm)ÃƒÂ¢Ã‚Â
spring installed height: 1.85" @ 100lbsÃƒÂ¢Ã‚Â
maximum valve lift: 0.575" (14.61mm) @ 300lbs
rocker stud diameter: 7/16"ÃƒÂ¢Ã‚Â
pushrod diameter: 5/16" (width of slot in guide plate)
spark plug style: straight
flow chart cfm @ h2o
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