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Thread: 94TBI vs Vortech heads?
          
   
   

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  1. #1
    MainCap is offline CHR Member Visit my Photo Gallery
    Join Date
    Oct 2005
    Location
    Austin
    Car Year, Make, Model: '94 K1500 Suburban, Swapping to 383 TBI
    Posts
    66

    94TBI vs Vortech heads?

     



    Aside from the manifold bolt mounting differences, is there a significant difference in chambers, valves, flow characteristics between a 94 TBI head and a newer Vortech head, assuming both came off their corresponding 5.7L year model engines?

    I'm planning on rebuilding my 94 5.7L TBI into a 383 Suburban tow motor with EMPFI from Edlebrock or Accel and am wondering if a head change would be warranted. I know I could go all out on some AFR's, but...

    I intend to maintain the stock RPM range and am looking for cost effective low RPM torque.

    Any recommendations on this project would be appreciated.

    Thanks!!

  2. #2
    wrench55369 is offline Registered User Visit my Photo Gallery
    Join Date
    Aug 2005
    Location
    Maple Grove
    Car Year, Make, Model: 86 Mazda RX 5.7
    Posts
    2

    Vortech heads

     



    Here is good link for info and comparisions of flow for different heads. Yes, the Vortechs will flow more than the original TBI heads!
    http://www.sallee-chevrolet.com/fram...ds/Vortec.html

    Comp Cams also has detailed info on their site. Very helpful if you want to do the research and get used heads for rebuilding. Good luck!

    http://www.compcams.com/

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