aeroflow's big block chevy cylinder heads are designed for entry-level street performance engines and ideal for operating in the idle to 6750 rpm range. made from a356 aluminium castings.
these complete heads include larger than-stock 1.625" (41mm) diameter valve spring with damper to handle up to 0.850" (21.5mm) maximum valve lift. recommended spark plugs are 14mm x 3/4" reach with flat gasket seat.head specs:
chamber volume: 121cc chamberÃƒÂ¢Ã‚Â
intake port volume: 315cc
intake valve size: 2.25"ÃƒÂ¢Ã‚Â
exhaust valve size: 1.88"
valve spring diameter: single spring with damper 1.625" (41mm)ÃƒÂ¢Ã‚Â
spring installed height: 2.08" @ 100lbsÃƒÂ¢Ã‚Â
maximum valve lift: 0.850" @ 275lbsÃƒÂ¢Ã‚Â
rocker stud diameter: 7/16"ÃƒÂ¢Ã‚Â
pushrod diameter: 3/8" (width of slot in guide plate)
spark plug style: straight
max rpm: 7400-7600
flow chart cfm @ h2o
|part type||cylinder heads|
|hose end socket type||no|
|push to connect type||no|
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