Internal Mods For Northstar
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Northstar Engines and System Technical Discussion Discussion, Internal Mods For Northstar in Cadillac Engine Technical Discussion; Sup guys, I took the engine and transmission out today with my dad to fix my head gaskets, and I ...
  1. #1
    ThrowSumD'sONDatBiSH is offline Cadillac Owners Member
    Automobile(s): Cadillac
    Join Date
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    Internal Mods For Northstar

    Sup guys, I took the engine and transmission out today with my dad to fix my head gaskets, and I got to thinking. Since the motor is out the car and it is about to be apart, why don't I make some modifications to it for more power. How can I get more power out of this engine without using too much money? I was reading about head work here: http://www.chrfab.com/Head_Work.htm
    and I got to thinking this is something I could do because my dad has any tool imaginable and he can help me with it. Are there any other "free" mods? What about springs? The website has some springs on there for only 150 dollars. Can I just put them in the northstar or would I need other modifications to it? Do I also need a cam to put those springs in there? Any help would be grapely appriciated.

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  3. #2
    Submariner409's Avatar
    Submariner409 is offline If it won't run, stick on fender vents
    Automobile(s): 2002.5 F55 STS/65500mi, 2004 Ford F150 SuperCab4x4
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    Re: Internal Mods For Northstar

    BEFORE YOU START, please get a factory service manual for reference. The N* has 4 camshafts, 3 timing chains. You can find regrinds, no off-the-shelf aftermarket units. Within any model year the engines were engineered as a powertrain unit for specific application : translation.....no mods. Certainly, port matching, cleaning, some refined polishing, can be good for a couple of HP. The aftermarket builders are not making engines for daily drivers....far from it. If you can only use an engine above 4,000 rpm, what good is it ??? Carefully rebuild the engine, paying attention to the small details, and the thing will run forever. Go crazy with one-of-a-kind mods and you will have a nightmare. Have you ever blown up a $24,000 engine with 4 hours on it???

    Welcome to NASCAR.

  4. #3
    codewize's Avatar
    codewize is offline Cadillac Owners Master
    Automobile(s): 1991 d'Elegance / 2001 DTS / 2002 DTS
    Join Date
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    Upstate NY
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    Re: Internal Mods For Northstar

    Anything you do to the internals of that engine will surely throw codes. The engines at Cadillac Hotrod Fabricators are designed for off road use using custom engine controls. None of what they do would ever work in a production car.

    As sub said, this is not a joy ride to do. Get a manual. I'm sure working on the N* you will find a tool or two that your dad doesn't have.

    I can't say it enough but this is not a small block Chevy. Pay attention and read.

    Make sure to Timesert the entire engine.
    Ownership:
    91 d'Elegance 350
    02 DTS
    01 DTS:
    Custom installed Volant CAI
    Custom PCM
    Body color engine components
    Cruiser Alloy wheels
    EBC brakes and rotors
    Eibach springs
    Corsa exhaust
    Sportwing Spoiler
    Semi-custom interior
    Custom quad Hi-Beams
    Future Plans: More interior work.


    Memberships:
    National and regional Cadillac & LaSalle Club
    Proud Volunteer - Northstar Tuning Project
    Guinness World Records - Largest Cadillac Parade

    ----------------------------

  5. #4
    med's Avatar
    med
    med is offline Cadillac Owners Member
    Automobile(s): 1994 STS "CADDYSNACK"
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    Re: Internal Mods For Northstar

    Quote Originally Posted by ThrowSumD'sONDatBiSH View Post
    Sup guys, I took the engine and transmission out today with my dad to fix my head gaskets, and I got to thinking. Since the motor is out the car and it is about to be apart, why don't I make some modifications to it for more power. How can I get more power out of this engine without using too much money? I was reading about head work here: http://www.chrfab.com/Head_Work.htm
    and I got to thinking this is something I could do because my dad has any tool imaginable and he can help me with it. Are there any other "free" mods? What about springs? The website has some springs on there for only 150 dollars. Can I just put them in the northstar or would I need other modifications to it? Do I also need a cam to put those springs in there? Any help would be grapely appriciated.
    That's cool to hear about a dad and son removing a tranny and motor together. I remember the first time (19yrs old) I removed a motor and tranny, although my dad wasn't around. I pulled a powerglide and 283 for rebuilding from a '64 Chevelle SS convertible. It took me forever (working on it all day with the mosquitoes until 3am at night). My drunk brother came home at 2am and pointed out the body was hanging by a cable from the tranny as I jacked up the assembly. <-- It's nice to have an extra pair of eyes when working on something new and big, even if those eyes are wasted drunk. I immediately remembered that I forgot to disconnect the speedo cable! What I remember most about this experience was: everyone told me it was simple to do, but very few actually knew (the local mechanic I bothered knew). That Chevelle was simple compared to what you guys are dealing with. I sincerely hope you guys have some fun with your project and let us know how you do.

  6. #5
    codewize's Avatar
    codewize is offline Cadillac Owners Master
    Automobile(s): 1991 d'Elegance / 2001 DTS / 2002 DTS
    Join Date
    Apr 2005
    Location
    Upstate NY
    Posts
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    Re: Internal Mods For Northstar

    I agree ^^^^^

    I never really had the pleasure of doing anything cool like that with my dad. I got stuck rebuilding the 350 out of our pickup do to necessity rather than for fun.

    It was very educational none the less.
    Ownership:
    91 d'Elegance 350
    02 DTS
    01 DTS:
    Custom installed Volant CAI
    Custom PCM
    Body color engine components
    Cruiser Alloy wheels
    EBC brakes and rotors
    Eibach springs
    Corsa exhaust
    Sportwing Spoiler
    Semi-custom interior
    Custom quad Hi-Beams
    Future Plans: More interior work.


    Memberships:
    National and regional Cadillac & LaSalle Club
    Proud Volunteer - Northstar Tuning Project
    Guinness World Records - Largest Cadillac Parade

    ----------------------------

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