My budget (slow) LSx build
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My budget (slow) LSx build

  1. #1
    Senior Member slow67's Avatar
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    Default My budget (slow) LSx build

    Here is my extremely cheap build......

    Its a 16' 1984 Cimarron SJ. Came from the factory with a 350 and a 12JE pump.

    Two years ago I bought it and stuck in an 8:1 350 with a nice little hydraulic cam (I had the motor sitting around). Had problems with #7, turned out it ended up scoring a cylinder wall. Yanked the motor out and it sat for a bit.

    Plans:
    Rebuild the pump.
    I put a Place Diverter on it 2 years ago.
    Currently wet-sanding it and buffing the hull.
    4.8L LR4 with 320,000 miles (still runs STRONG). I figure the cold block will tighten up the ring seal a little.
    It should turn a B impeller 4300 rpm buy my estimation.

    Also just received my order of stainless in to build some water jacketed headers. (will be about $100 cheaper than buying the PCM manifolds/risers, and look WWWAAAAYYYY better painted or polished).

    Goals are a very reliable family lake boat that does around 60. Keeping the fuel injection. I'm using a 4.8 because it was FREE. Not hard at all to bolt in a 5.3 or 6.0 or 6.2 later down the road.

    The first 2 pics are from 2 years ago. The last one is from over the weekend from wet sanding and buffing (don't think its ever even been waxed).

    Oh and yes, it is wrong hand drive.
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  3. #2
    History Repeating Storz's Avatar
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    Thats awesome
    '84 Laser LTV - Restoration in progress
    '77 Caribbean

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    Senior Member CK7684's Avatar
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    Looks almost just like my 16 ft CobraJet...great little boat if youre not looking for super high speed. I really love mine

    Last edited by CK7684; 04-21-2010 at 09:45 AM.

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  6. #4
    Senior Member slow67's Avatar
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    Oh yeah, it did 60 mph (GPS) with the 8:1 cammed 350, hoping this 4.8 will be just as fast, but be more reliable (EFI) and better economy (I'm saving my 76 Rogers Bonneville for the hot-rod boosted LSx )
    I will be doing the tuning with HPtuners.

  7. #5
    Swollen Member Wasted Income's Avatar
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    Subscribed
    1975 CeeBee Avenger 18' - 6.0L LSx, 12JG

    2002 Sunsation 288


  8. #6
    Swollen Member Wasted Income's Avatar
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    Quote Originally Posted by slow67 View Post
    Also just received my order of stainless in to build some water jacketed headers. (will be about $100 cheaper than buying the PCM manifolds/risers, and look WWWAAAAYYYY better painted or polished).
    Want to build 2 sets?
    1975 CeeBee Avenger 18' - 6.0L LSx, 12JG

    2002 Sunsation 288


  9. #7
    mo balls than $cents$ IMPATIENT 1's Avatar
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    Quote Originally Posted by Storz View Post
    Thats awesome
    x2

    Dare to be different, if it turns out great you can claim you planned it that way.

    Jetboatperformance.com

  10. #8
    Senior Member slow67's Avatar
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    Quote Originally Posted by CK7684 View Post
    Looks almost just like my 16 ft CobraJet...great little boat if youre not looking for super high speed. I really love mine

    It does indeed. I'm pretty sure its a splash. Yours looks good!

  11. #9
    Senior Member slow67's Avatar
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    There is $700 worth of stainless. 1 3/4" inside header tube, 2 1/4" outside. 3" collector, 4" outside.

    The next pic is my mockup head.

    And the last is my worn out Aluminum flywheel and a flexplate. I will use whichever one my PTO/bolts allow
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  12. #10
    Senior Member slow67's Avatar
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    And my welder. Thermal Arc 185.
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  13. #11
    Swollen Member Wasted Income's Avatar
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    Quote Originally Posted by slow67 View Post
    There is $700 worth of stainless. 1 3/4" inside header tube, 2 1/4" outside. 3" collector, 4" outside.
    Nice! I am VERY interested in seeing the construction of those headers. Please take and post a lot of pics!
    1975 CeeBee Avenger 18' - 6.0L LSx, 12JG

    2002 Sunsation 288


  14. #12
    Menominee, mi UP
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    great thread to keep my eye on

  15. #13
    Small Block Rockin' SJ-16's Avatar
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    Cool boat. Mine's an '82 with a 350 and Berk.
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  16. #14
    Senior Member slow67's Avatar
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    Quote Originally Posted by SJ-16 View Post
    Cool boat. Mine's an '82 with a 350 and Berk.
    Nice! Yours appears to be cleaner than mine. Just found a 6" crack in the hull hidden by one of the bunks More glass work

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