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vortec heads

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by MUDNUTT, Aug 3, 2001.

  1. MUDNUTT

    MUDNUTT 1/2 ton status

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    has anyone used chevys votec heads and if so how did they perform and what problems did you have if any. i am currently putting these on my smallblock and would like some feedback.
     
  2. arq

    arq 1/2 ton status

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    I am using them now and had no problems with them. they do recommed a cam hieght of .048 or lower. also you will need a new intake to match the intake ports correctly. I think i got better fuel economy too. I was getting 15-16 mpg untill my carb went bad. i am running an RV cam with them.

    ARQ.

    1-72 4x4 CST Blazer
    2-71 4x4 CST Blazer
     
  3. MUDNUTT

    MUDNUTT 1/2 ton status

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    i am putting these heads on a 40 over 4-bolt 350 block. im using an erson tq20 cam so i should be alright as far as lift goes. will be running a performer rpm manifold for these heads so no proplem there. im the only one i know personally who is trying these heads so i wanted to get some feedback from people who have actually done this.
     
  4. xnoahx

    xnoahx 1/2 ton status

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    Im running them also. As far as performance there is a difference but im running 3.07's and 36's so i cant feel it properly. The diggest difference for me was my engine doesnt run on any more when i shut it off. I think thats because of all the carbon that was built up on the top of my pistons and cumbustion chambers. I do like to run premium now though with the higher compression.

    Check out my 73 K5 <a target="_blank" href=http://members.theglobe.com/xnoahx/73k5.htm>http://members.theglobe.com/xnoahx/73k5.htm</a>
     
  5. arq

    arq 1/2 ton status

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    forgot to mention about the octane. i too run premium 90+ octane. the compression ended up close to 10:1, i have a 350, 4blt, trw flat tops .030 over, and decked .010. i get an ocational ping when i run regular gas.

    ARQ.

    1-72 4x4 CST Blazer
    2-71 4x4 CST Blazer
     
  6. Anteak

    Anteak 1/2 ton status

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    Just wondering , how much are these heads $$?
     
  7. marv_springer

    marv_springer 1/2 ton status

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    I am running these heads. They work well. I think they're the best value of a small block cylinder head. My present motor might be the best running 350 I've ever had. CR is 9:1, and it runs on 87 octane gas.

    Marv
     
  8. Mr.Chevy4x4

    Mr.Chevy4x4 1/2 ton status

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    You can order them complete and ready to bolt on from Scoggin Dickey(in Lubbock Texas) for about $420 plus shipping. Don't forget to order the self aligning rocker arms($50). You have to have these, the old style won't work.

    '85 K5 : Run it til it breaks, then fix it and go again!
     
  9. xnoahx

    xnoahx 1/2 ton status

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    You could also check on ebay for them. I got mine there, $450 w/chrome centerbolt valve covers and free shipping. you will need the ceterbolt valve covers also.

    Check out my 73 K5 <a target="_blank" href=http://members.theglobe.com/xnoahx/73k5.htm>http://members.theglobe.com/xnoahx/73k5.htm</a>
     
  10. dyeager535

    dyeager535 1 ton status Premium Member

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  11. 84_Chevy_K10

    84_Chevy_K10 Banned

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    Remember everyone, quench distance is far more important than your compression ratio to reduce detonation. You can have a 12:1 motor run on pump gas and an 8.5:1 motor that won't run on premium if you don't know what you're doing with QUENCH!

    Vortec heads require self-aligning rocker arms, centerbolt valve covers, and a Vortec style intake.

    Tim
    '84 Chevy K10, lifted, loud, fast, and 3/4 ton axles
     
  12. MUDNUTT

    MUDNUTT 1/2 ton status

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    i got my heads from the local chev dealer for $200 a head, the self aligning rockers were $50. when i checked with scoggins they were like $450 for the pair plus shipping and the rockers were extra. i got lucky, i was going to go to the junkyard and look for a set of valvecovers as all the aftermarket chrome stuff i have found is over a $100 bucks but my machinist had a set of stockers that he gave me. clean them up, shoot em with some chevy orange and they'll look good as new.
     
  13. xnoahx

    xnoahx 1/2 ton status

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    you can get chrome centerbolts out of summit for about $40

    Check out my 73 K5 <a target="_blank" href=http://members.theglobe.com/xnoahx/73k5.htm>http://members.theglobe.com/xnoahx/73k5.htm</a>
     
  14. bigk

    bigk 1/2 ton status

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    One of the most recent issues of 4WOR or Four Wheeler had 100 or so tips for small block Chevy engines and they mentioned Vortec heads. Lots of other cool info too.

    Karl
    Temporarily Unemployed Underwear Model
    87 3/4 ton
     
  15. dyeager535

    dyeager535 1 ton status Premium Member

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    BTW, I didn't mention this article either: http://www.dorianyeager.com/index2.html
    No anti-theft measures on your truck? No pity when its stolen
     

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