This auction is for a pair of brand new assembled aluminum big block Chevy cylinder heads.  These are rectangle port cylinder heads with open style 119cc combustion chambers and 320cc intake runners.  In addition to the nearly 80lb weight savings these heads offer over factory cast iron heads, they will yield about a 40hp gain over stock GM 990 castings.  In unported form these heads will support 500+ horsepower on pump gas.  If you are looking for a race grade head that is comparable to Edelbrock, Dart, Trick Flow, Pro Comp P3021 same specs and flow numbers and AFR at a fraction of the price look no farther then these. These heads are machined and assembled by us. These heads work great on Carburetor and fuel injection engines, no special gaskets needed.The features of these are as follows,

  • Heads are pressure cast from premium quality 2024 aluminum alloy.  Unlike many inexpensive aftermarket heads that are sand cast these are cast in steel permanent type molds.  This offers a stronger more durable cylinder head with consistent thickness throughout.  These castings incorporate .400 thick deck surfaces for maximum head gasket longevity.
  • After machining the heads have magneese bronze valve guides installed along with stellite valve seats.  This is the best available combonation for street use with unleaded gas.  If you are racing the stellite valve seats offer much longer seat life then most competers ductile iron valve seats
  • Both the intake and the exhaust incoperate three angle valve seats to maximise both low and midium lift flow.
  • The heads come fulley assembled with 2.25 stainless steel intake valves and 1.88 exhaust valves.  These valves incoperate swril polished heads and undercut stems.  In addition they have smaller 11/32 stems and are .100 longer then stock GM valves.
  • Valve springs installed on these heads have 125lbs closed pressure and will accomadate .660 lift.  These will work fine with just about any hydraluic or solid flat tappett camshaft. 
  • We also offer the correct needed parts for these heads with ebay auction numbers.All the following parts work out of box with my heads!!
  • 142469376690 correct length 3/8 push rods for non roller camshafts
  • 142469376696 correct 3/8 guide plates
  • 232439450924 correct length 12 point cyclinder head bolts/stud kits
  • 142469379712 correct 1.7 ratio stainless steel full roller rockers with poly locks. 1.72 and 1.73 same.
  • 372038106244 correct 7/16 .200 longer rocker studs
  • 144343718313 correct length 3/8 moly push rods for roller cams

  • Intake Flow

    Exhaust Flow

    .100
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    .700

    73
    145
    215
    285
    320
    345
    360

    .100
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    .700

    71
    120
    165
    200
    228
    249
    266



 These heads will accept all factory bracketery and accessories designed for 396-454 chevy engines.  Standard headers and rectangle port intakes will fit fine.  Over the past 2 years we have sold over 600 sets of these heads.  During this time we have had a great deal of feedback from our customers, these heads have proven to be street tough and race durable.  If you have questions feel free to e-mail. Thanks for looking. 



Please feel free to ask any and all questions directly thru ebay messaging system, I will answer all questions, I want you happy!!. I cant include personal contact information its against ebay policy, After purchase on ebay we can exchange contact information as needed.