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Need info on a TBI 427

Discussion in 'The Garage' started by MudFrog, Sep 9, 2005.

  1. MudFrog

    MudFrog 1/2 ton status

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    Anyone have any info on the TBI 427? Specs, etc? I have a lead on one for around $500 including the complete TBI and wiring. If it is a decent jump above my TBI 350 I might be interested.
     
  2. gauder

    gauder Banned

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    I'd be interested too. Never heard of a tbi 427.
     
  3. MudFrog

    MudFrog 1/2 ton status

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    The guy told me it is out of a Pepsi truck, thats all I know.
     
  4. blazinzuk

    blazinzuk Buzzbox voodoo Premium Member GMOTM Winner

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    me thinks tall deck truck 427
     
  5. ZooMad75

    ZooMad75 1/2 ton status Premium Member GMOTM Winner

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    ding ding!

    Ditto on the tall deck as the standard deck 427 was last produced in 1969. Just a few years shy of TBI... :wink1:
     
  6. gauder

    gauder Banned

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    Just be careful then and make sure it's not a 366.
     
  7. MudFrog

    MudFrog 1/2 ton status

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    Anyone have any info on it though? I don't really mind it being a tall deck.. but I'd like to know if it would be worth the swap.
     
  8. dirtwarrior17

    dirtwarrior17 Banned

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    since i've never even heard of one i couldn't tell you jack about it except that its probably got alot of power behind it waiting to come out. I seriously doubt tbi will handle that beast if you modify it. Although it could be a 4 bbl setup or a giant 2bbl.

    give me a couple hours...
     
  9. blazin_blazer

    blazin_blazer 1/2 ton status

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    what he said

    theres been quit a few of these sold as a 427 then when you need parts after its too late you find out its a 366...they look identical for the most part, i've been takin for that ride myself!
     
  10. MudFrog

    MudFrog 1/2 ton status

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    So I'm assuming the only way to tell them apart is by the casting #? You have any info on what the numbers would be for the 427 version?
     
  11. MudFrog

    MudFrog 1/2 ton status

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    I'm begining to think it is a 366, I've looked around on a bunch of sights and can't find any info on a TBI 427, I have however found info on a TBI 366 and they claim it came in HD trucks (such as a Pepsi truck I would imagine).

    I did see where it said it is they are not for use in car or light duty trucks, wonder why..

    Oh well.. back to the drawing board :doah:
     
  12. RingMaster4x4

    RingMaster4x4 1/2 ton status Premium Member

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  13. gambit420s

    gambit420s 1/2 ton status

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    i know the 366 has a weird front setup, so far as the water pump, thermostat housing and accessory mounts, it might even be a different manifold, not really sure on the last part. but the front is completely different from smaller trucks, but i bet if you just swapped it for standard BBC stuff you might make it work
     
  14. MudFrog

    MudFrog 1/2 ton status

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    I just talked to the guy who told me about it, he said it is deffinitely a 427 as it says so on the valve cover.. so I'm all confused again.. haha.

    Either way, does anyone think a tbi 427 would yield enough performance gains to make it worth swapping in place of the tbi 350?
     
  15. gauder

    gauder Banned

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    Just check the casting numbers to be sure it's a 427 first. When a company has a large fleet of vehicles, parts get swapped around often, so it would not be too far out of the question for a set of 427 valve covers to wind up on a 366.

    If it is a 427 truck motor, I'm sure it would have tons of torque. The plusses of a truck motor are they usually have a steel crank and 4 bolt mains.

    The down side is if you intend to modify it, 10.2" deck height manifolds are expensive. And most truck motors came with restrictive "peanut port" oval port heads, good for torque but not so good for hp.

    Hope this helps some.
     
  16. Leper

    Leper 1/2 ton status

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    Dallas Baby!!!!
    :haha: :haha: :haha: :haha: :haha: :haha: :haha: :doah:
     
  17. MudFrog

    MudFrog 1/2 ton status

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    Thats what I thought too but he swears it :rolleyes:

    Thats why I wanted the info for the stamped # on the block.
     
  18. 4X4HIGH

    4X4HIGH 1 ton status Premium Member GMOTM Winner

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    I'm not sure how late GM was using the 366 and 427 tall deck engines but i've never heard of either having TBI. A 427 tall deck engine will makes tons of low end torque. The intake manifold is different, it is wider than a regular BBC intake because of the taller deck height but there are intake manifold spacers available so you can use any GM BBC intake. The rest of the engine is the exact same as any other BBC with the exception of the distributor which is .400" longer than a regular BBC/SBC.
     
  19. gauder

    gauder Banned

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    Summit catalog number WND-8206 @ $137.95 for the intake spacers to use a passenger car intake manifold plus the price of the manifold is expensive to me. Pushrods are longer too.
     
  20. blazin_blazer

    blazin_blazer 1/2 ton status

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    the reason to not use in passenger vehicle

    is because of the emmisions are different between a passenger and a large hd truck, plus a tall deck 427 would probally have enough torque to twist a frame in half :D
     

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