Fixing Head Gasket
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Northstar Engines and System Technical Discussion Discussion, Fixing Head Gasket in Cadillac Engine Technical Discussion; I just got a 1999 Cadillac Seville STS. The only problem is that it needs a new Head Gasket. I ...
  1. #1
    Collin Taylor is offline Cadillac Owners Member
    Automobile(s): 1999 Cadillac Seville STS
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    Fixing Head Gasket

    I just got a 1999 Cadillac Seville STS. The only problem is that it needs a new Head Gasket. I did some research and found this SureGrip Stud Kit. This kit looks like it could solve the head gasket issue for sure but i will have to find out. If anyone has some advice or tips for me that would be great. http://www.northstarperformance.com/sgstuds.php

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    bigtone's Avatar
    bigtone is offline Cadillac Owners Fanatic
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    Re: Fixing Head Gasket

    Either timeserts, or better yet Norm's inserts, are also considered a 'permanant' repair. They can be installed with engine in car if you prefer (many still would rather remove engine from car anyway) whereas studs require engine removal.

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    Ranger's Avatar
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    Re: Fixing Head Gasket



    Yup, as mentioned, inserts work just as well. Choice is yours, but do your homework. A Northstar HG job is not a weekend project (for most people).

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    ternstes is offline Cadillac Owners Fanatic
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    Re: Fixing Head Gasket

    Definitely get a Factory Service Manual or an Alldata subscription for your car while you complete the repair.

  6. #5
    Collin Taylor is offline Cadillac Owners Member
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    Re: Fixing Head Gasket

    I am going to use alldata to help me. I also have a garage that i plan to work in so i can take my time and get it right. But i also at school for automotive so i have done several projects prior to this. I also wanted to know if i should drill and tap the holes if the treads are fine to maybe correct a future problem or just replace the gaskets.

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    Re: Fixing Head Gasket

    You ALWAYS drill and re-tap the North Star when replacing the head gaskets, ALWAYS

  8. #7
    MoistCabbage's Avatar
    MoistCabbage is online now Cadillac Owners 10000+ Posts
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    Submariner409 is online now If it won't run, slap in a big stereo
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    Re: Fixing Head Gasket

    .............. X 3.

    For starters, and to get some idea of what you're up against, look through

    www.carrollcustomcadillac.com - www.huhnsolutions.com - www.northstarperformance.com

    .......... and, if you use inserts, you ALWAYS use a set of NEW GM head bolts and washers.

    Please - please - read the sticky thread ^^^ on Northstar head gasket work just above this thread. You're on a very steep learning curve, and you might just be in over your head. You WILL need a real GM/cadillac service manual to do the job properly - too many special procedures and torque values to fly blind. (I see you are subscribed to Alldata - that's fine.) Do you speak 3 timing chains, tensioner adjustment, timing, and oil pump drive friction ? Hydraulic cam follower buckets and water pump drive pulley removal - from the left bank intake cam ??

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