Will a 5.7 from a 1995 tahoe work in a 1999 suburban?

Discussion in 'Engine Performance + Maintenance' started by jefflroberts, Dec 3, 2019 at 12:06 PM.

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  1. jefflroberts

    jefflroberts Newbie

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    I have a 1999 Suburban that blew a head gasket and I did not realize what happened in time so unfortunately it will not turn over and the coolant/oil mix started leaking from under it. I have not inspected it close but I am pretty sure a new engine is in order, or a rebuild depending on where the leak is coming from. I found a 1995 tahoe that has been wrecked but the engine still runs and it will still move enough to pull itself onto a trailer. I believe the engine in the 1995 is not a vortech but mine is. If I swap the intake and all the exterior engine stuff with my old engine, will the 1995 engine work in my 1999?
     
  2. Turbokat

    Turbokat Newbie

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    The bolt pattern on the intake is different. I guess you could put the vortec heads on the 95 and it would be the same thing
     
  3. sntrym

    sntrym I'm Awesome

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    The cam is different too. You can swap the cam, heads, and intake to the TBI block and it should be fine. However, it's probably more trouble than it's worth when a long block Vortec engine is 1800 bucks.
     
  4. jefflroberts

    jefflroberts Newbie

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    Thanks for the info guys! Knowing those differences, I agree buying a long block is probably my best bet. The price seems to be right on them. Do you guys recommend a particular brand or part number?
     
  5. L31MaxExpress

    L31MaxExpress I'm Awesome

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    GM Goodwrench as it is 100% new.
     
  6. jefflroberts

    jefflroberts Newbie

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  7. L31MaxExpress

    L31MaxExpress I'm Awesome

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    jefflroberts likes this.
  8. sntrym

    sntrym I'm Awesome

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  9. Schurkey

    Schurkey I'm Awesome

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    The TBI cooling system passages in the block are different than the Vortec; as is the water pump and accessory drive. The block casting may be the same, but the machining of that casting can be different.

    I'd expect used-but-usable Vortec engines to be fairly plentiful.
     

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