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Part # check ?? GM alum intake on a TBI motor.

Discussion in 'The Garage' started by Stephen, Aug 17, 2003.

  1. Stephen

    Stephen 1/2 ton status Moderator Vendor

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    Did all the TBI motors come with an alum manifold?
    My bro's buggy motor came from a sub with a goodwrench engine in it but the manifold looks original.

    Part # on it is 14102182.

    Thanks
     
  2. HarryH3

    HarryH3 1 ton status Author

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    Our '94 Sub came with a factory aluminum intake, as did the TBI 4.3 in our '91 S-Jimmy. It's been a long time since I owned it, but I'm pretty sure that my '87 K5 also had a factory aluminum intake. /forums/images/graemlins/cool.gif
     
  3. sled_dog

    sled_dog 1 ton status

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    I believe all TBIs are factory aluminum
     
  4. Seventy4Blazer

    Seventy4Blazer 3/4 ton status

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    working at the junk yard i never saw an iron TBI intake.
    the part number on my TBI intake is the same as yours. and its out of an 87 truck k15
    grant
     
  5. Stephen

    Stephen 1/2 ton status Moderator Vendor

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    Cool guy light weight racing parts, stock, how much better can it get.
     
  6. wayne

    wayne 3/4 ton status

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    As far as I know they were all aluminum. Also the 4 bbl intakes were aluminum through most of the 80's. I know they were using aluminum as far back as 82 on the Z28's.
     
  7. sled_dog

    sled_dog 1 ton status

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    I've never seen a factory aluminum 4 barrel manifold on a truck. And I wouldn't call a stock aluminum tbi intake, lightweight race stuff. Lightweight maybe.
     
  8. K5 NUTT

    K5 NUTT 1/2 ton status

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    Got the motor swap in the burb 3/4 ton right now stephen....have a spare TBI manifold if you need one.

    And yes..it seems all TBI manifolds were aluminum.

    DW
     
  9. Twiz

    Twiz 1/2 ton status

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    [ QUOTE ]
    light weight racing parts, stock, how much better can it get

    [/ QUOTE ]

    Alot better -
    - The passages are T'd (shaped like a T), like the old Q-jet manifolds, disrupting air/fuel mixture as it enters the port.
    - Port to port flow can differ significantly. I had the CFM rateings written down here somewhere, can't find it at the moment, tho'. But I remember the readings being quite different (Port to Port).

    Typlical factory production part.
    The part works well enough to do it's job - and thats it.
    They didn't spend the time or money to build it around a flow-bench, they didn't have to, at the time.
     

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