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ZO6 in F Body Problem

This is a discussion on ZO6 in F Body Problem within the General Help forums, part of the LSx Technical Help Section category; Hi all First a little background My wife has a 2000 WS6 vert m6 75000 kms About a month ago ...

  1. #1
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    ZO6 in F Body Problem

    Hi all
    First a little background
    My wife has a 2000 WS6 vert m6 75000 kms
    About a month ago the engine let go 200 ppm hydrocarbons in the coolant
    We decided to do an LS6/ZO6 swap ,ordered a goodwrench motor from crate engine depot, had it installed by a very competant shop, used the stock LS1 intake. Car fired right up no issues. Then it threw a code , misfire on 7&8
    It was determined that the fuel pump was bad . Replaced fuel pump, no codes now but still stumbling.Fast forward only 70 pounds compression on 7&8
    Are we missing something? or is the motor hooped ?

  2. #2
    let the F-Bodies roll jimmybling31's Avatar
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    white
    94 camaro z28

    Quote Originally Posted by hiredgun58 View Post
    Hi all
    First a little background
    My wife has a 2000 WS6 vert m6 75000 kms
    About a month ago the engine let go 200 ppm hydrocarbons in the coolant
    We decided to do an LS6/ZO6 swap ,ordered a goodwrench motor from crate engine depot, had it installed by a very competant shop, used the stock LS1 intake. Car fired right up no issues. Then it threw a code , misfire on 7&8
    It was determined that the fuel pump was bad . Replaced fuel pump, no codes now but still stumbling.Fast forward only 70 pounds compression on 7&8
    Are we missing something? or is the motor hooped ?
    bad motor or incompetent instal

  3. #3
    Member DaddySS's Avatar
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    Black
    2000 Camaro SS Conv.

    How many miles did you run before doing the compression test? Were you getting detonation? It seems very odd that you could have burned the rear two pistons. Do a leak down test and see where the pressure is going.

  4. #4
    Moderator Cutlass's Avatar
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    1999 Formula WS6 M6-sold
    2001 Silverado Z71

    Sounds like a bad motor. I'd do a cylinder leak down test to see where the missing compression is going.

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    incompetant install ?? explain

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    let the F-Bodies roll jimmybling31's Avatar
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    Quote Originally Posted by hiredgun58 View Post
    incompetant install ?? explain
    the guy didn't check everything out while installing it and might have missed something important.

  8. #8
    Bad habbit- Smoking Fords
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    Sunset Orange Metallic
    2001 Camaro SS

    Why are you using a stock LS1 intake instead of the proper LS6 intake?
    2001 SS - 430 RWHP 412 RWTQ
    6 spd, FIPK, Corsa exhaust, LS7 clutch, Dart Pro PP LS1 heads, custom 220/224 cam, Kooks LT's. Ported TB, Full suspension, C5 ZO6 brake upgrade.

  9. #9
    Veteran Hi-Po's Avatar
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    The LS1 intake will work. Forget the compression test now, need to do a leak down.

  10. #10
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    pewter
    2001 WS6 T/A

    Had a problem like this on a 6.o pick up, guy installed engine at home and
    left a ball of paper towel in #8 intake port in the head. removed intake and called him, very easy to do if you dont double check your work

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