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Thread: VORTEC 5.7L CYLINDER HEAD same as Merccruiser Vortec?

  1. #1
    Registered User gbaronetXCR's Avatar
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    VORTEC 5.7L CYLINDER HEAD same as Merccruiser Vortec?

    So in hunting for a set of vortec heads, I get a lot of giggles from bone yards. "when you find a set buddy call me. " They are damn scarce so I'm finding. Only two sets on Ebay today, both are the undesirable 906 castings "as per chevy High Performance 6/8/2004"
    A friend is into boats, has a few vortec 5.7 Mercs around. These the same animal? Still GM casting numbers? The guy has a dozen of so motors out of boats and laying around, most with cracked blocks becasue of bad storage for winter.
    Anyone know..?
    When in doubt Gas it!

  2. #2
    Registered User Catching Second's Avatar
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    Why not just buy a brand new pair. They're only about $520 new.
    "A true hotrodder wouldn't be content untill he had created a car so violent, so hairy, so totally sick that the very act of dropping the hammer would result in instant death. Anything less results in the need to go faster." - Tony DeFeo

  3. #3
    Registered User Rcv's Avatar
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    There's nothing wrong with the 906 castings.

  4. #4
    Double Bagged s10blaza's Avatar
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    Damn that sucks, I had a hard time finding the heads for my TBI because all the junkyards have are Vortecs. I could've gotten a pair of heads with around 30,000 miles or so for $100/pair. The heads for my TBI were $35 :bigthumb:

  5. #5
    Blazin no mo Forklift's Avatar
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    Originally posted by s10blaza
    Damn that sucks, I had a hard time finding the heads for my TBI because all the junkyards have are Vortecs. I could've gotten a pair of heads with around 30,000 miles or so for $100/pair. The heads for my TBI were $35 :bigthumb:
    get the vortechs and get an intake to match it all up, thats what I wanna do to my fs gmc
    04 EC Silverado 4.8L,Pioneer, Rockford Fosgate, K&N, Viper, ACT, USSpeedo, Matrix, Whelen, Blackbear, 22" Eagles, Nittos,Russel,Magnaflow
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    Double Bagged s10blaza's Avatar
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    Yeah, once I get a second vehicle (hopefully the Magnum) I am going to rip the FI out and go carb. I got the rebuild with forged pistons in case of upgrades. This EFI really is a pain in the ass

  7. #7
    Registered User gbaronetXCR's Avatar
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    RCV, no expert at this, was following from http://chevyhiperformance.com/howto/97458/
    Did you have to mods the head to get them to work? Which intake did you use? What lift at you running ?

    Other option is a local perfomance shop. Fresh rebuilt heads with stainless valves 2.02, 1.96 , tri cut valves, screw in studs think they were 434 castings? I might have wrote it down wrong $890 cdn complete , add choice of rocker. He's getting them from somether in Ind. or Iowa?
    If I do the vortec's , I need to swap intake and the changes per the artical. I could get these merc head really cheap with low hours. They have rockers and valave cover.
    If I buy new from GM perfromance (1955 -present small block ,fits all except lt1, 1.94 1.5, max 4.75 lift without machine work and new valves.) I'm looking at $700 each cdn , minus the rockers. Rocker alumimum self aligining (same as lt4) $655 for the set.
    Total $2055 then I still need the manifold and valve covers.
    Anyone know of a cheaper place?
    When in doubt Gas it!

  8. #8
    Registered User Rcv's Avatar
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    CHP later retracted that statement. I bought my heads from Scoggin Dickey a LONG time ago. They already come modified and now they offer "kits" with complete heads, Edelbrock intakes and gaskets.

    http://www.sdpc2000.com/cart.asp?act...art&catid=2172

    With the XE268 cam and 1.6 rr I had problems with valve float around 6000 RPM and had to replace the springs.

  9. #9
    Registered User gbaronetXCR's Avatar
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    Good info Rcv. thanks..
    When in doubt Gas it!

  10. #10
    Senior Member bigjsp's Avatar
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    Originally posted by s10blaza
    Yeah, once I get a second vehicle (hopefully the Magnum) I am going to rip the FI out and go carb. I got the rebuild with forged pistons in case of upgrades. This EFI really is a pain in the ass
    Maybe you pissed off TRON:rofl: :rofl:

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