Mopar help
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Mopar help

  1. #1
    steelcomp was here
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    Default Mopar help

    Is it normal on a 383 for the ex manifold bolt holes in the heads to extend into the water jacket? Later model 383/440 heads w/ the larger valves.
    If God is your co-pilot, change seats!
    Acts 2:38, the perfect answer to the perfect question.

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  3. #2
    BTC cardcarrying member sunkisst's Avatar
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    Default Exh. studs...coolant

    It sure is...Learned this working on RV's some years ago.

  4. #3
    steelcomp was here
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    Thanks...that reely suks.
    If God is your co-pilot, change seats!
    Acts 2:38, the perfect answer to the perfect question.

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  6. #4
    Senior Member VAMI's Avatar
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    Default

    Hemis also do that.

  7. #5
    New here Beer:30's Avatar
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    Ha. Being a Chev guy, I learned the hard way. I bought a '70 'Cuda 440 6-pack clone. It had a header leak, something awful. I had to take the bolt out of the motor mount and jack that side of the engine up just to get to it. THEN, I pulled the exh bolts out and the coolant just came SHOOTING out of one of the holes. Oh well.

    I will say this, though. I have driven many a big-block Chevy. I had a wickedly fast Buick Grand National. I never really thought of Mopar as fast stuff. This built 440 with original (restored) six-pack setup; is UNREAL. It is the fastest car I have possibly EVER driven. With a 3.90 rear and 727, first and second are almost unusable when the end carbs open up. 440s are no joke when built properly. Wow.
    Quote Originally Posted by gn7 View Post
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    2001 SleekCraft 30' Heritage SSB, open-bow mid-cuddy. 496HO / Bravo-I.

  8. #6
    jetboataholic HawaiianJet's Avatar
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    Talking

    It keeps the manifold bolts cool!!!

    HJ

    ***FOR SALE*** 1978 19' Full Stringer Hawaiian Molokai Jet Boat w/ Berkeley 12JC-AB and Chevy 440 Tall Deck ***FOR SALE***

    Quote Originally Posted by mako shark mark View Post
    Oh yeah, Forgot to mention that the hull is a special mixture of speedcote, herculiner and rain-x, all blended together- good for another 8 mph top end.

  9. #7
    Just Me snoc653's Avatar
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    It's normal. The good part is I can't remember ever having one leak. Just a touch of sealant on the threads and they have never leaked. I'm hoping my 440 makes my ride wicked fast when it is all bolted together. We'll see.

  10. #8
    blown mopar moparjet's Avatar
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    normal.... the after market heads eliminate that... mine old heads used to leak but with a little sealer thay dont
    throw it in reverse

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