'98 heads and cams on a 2000 block
Cadillac
 

Cadillac Forums | Help Us Help You | Advertise | Cadillac Parts | Cadillac News | Cadillac Classifieds / (Old System)

Cadillac Technical Archive | Cadillac Dealers | Cadillac Reviews | Cadillac Dealer Reviews | Cadillac Vendors

CadillacForums.com is the premier Cadillac Forum on the internet. Registered Users do not see the above ads.
+ Reply to Thread
Results 1 to 8 of 8
Northstar Engines and System Technical Discussion Discussion, '98 heads and cams on a 2000 block in Cadillac Engine Technical Discussion; Anyone know if the cyclinder heads off a '98 N* will fit straight onto the block from a year 2000 ...
  1. #1
    Radiogareth's Avatar
    Radiogareth is offline Cadillac Owners Member
    Automobile(s): Northstar 2000 V8 engine only
    Join Date
    May 2009
    Age
    57
    Posts
    9

    '98 heads and cams on a 2000 block

    Anyone know if the cyclinder heads off a '98 N* will fit straight onto the block from a year 2000 N*?

    Would there be any benefit in doing the swap? (VIN tells me the 2000 is a 300 hp engine already)

    Alternatively, would the cams from the '98 fit the 2000 heads - if yes then I can get an exchange set of cams from CHRF

    The '98 engine has started boiling up and the car is being broken for spares (over here in London UK).

    Thanks

    Gareth

  2. Remove Advertisements
    CadillacForums.com
    Advertisements
     

  3. #2
    JimD is offline Cadillac Owners Connoisseur
    Automobile(s): '98 STS (RIP @ 206,xxx miles)
    Join Date
    Sep 2003
    Location
    Atlanta area
    Posts
    4,757

    Re: '98 heads and cams on a 2000 block

    Quote Originally Posted by Radiogareth View Post
    Anyone know if the cyclinder heads off a '98 N* will fit straight onto the block from a year 2000 N*?
    The "fit" will work.
    But!
    The combustion chamber (piston and head cavity) design was altered (to delete the 91 octane fuel recommendation) effective for 2000 model year engines.
    Would there be any benefit in doing the swap?
    No! Contrary.

  4. #3
    97EldoCoupe's Avatar
    97EldoCoupe is offline U.S. Patent #8,740,532 - www.studkit.com
    Automobile(s): 97 ETC, 04 Bonneville GXP, 2010 Sierra SLT crew cab /4x4
    Join Date
    Mar 2007
    Location
    London, Ontario
    Age
    28
    Posts
    2,494

    Re: '98 heads and cams on a 2000 block

    Compression will increase just slightly but the '00 shortblock doesn't have the valve reliefs in the pistons. On top of this you're losing the roller valvetrain.

    I've been considering doing the exact opposite - 00 heads on a 98 STS, but this is for supercharging purposes, and the intake manifold will have to be custom built.


    Need parts for your Northstar Engine? www.northstarperformance.com

    Jake Wiebe, developer of the SureGrip™ Cylinder Head Stud Kit

  5. #4
    Submariner409's Avatar
    Submariner409 is offline If it won't run, chrome it
    Automobile(s): 2002.5 F55 STS/65500mi, 2004 Ford F150 SuperCab4x4
    Join Date
    Feb 2006
    Location
    MD Eastern Shore - Kent Island
    Age
    74
    Posts
    45,017

    Re: '98 heads and cams on a 2000 block

    Don't forget that the pre-2000 heads used direct-acting hydraulic cam followers (lifters). The 2000+ heads are a complete redesign with different cams and indirect roller cam followers using static hydraulic adjusters for lash. The 2 models of heads bear no resemblance to each other. Ignition pack differences, too...............among others.

  6. #5
    Radiogareth's Avatar
    Radiogareth is offline Cadillac Owners Member
    Automobile(s): Northstar 2000 V8 engine only
    Join Date
    May 2009
    Age
    57
    Posts
    9

    Re: '98 heads and cams on a 2000 block

    Thanks Guys, thats REALLY helpful. Seems I've got the best of both worlds then. I'll talk to CHRF and see if they have ever used their cams in this head. If the '98 engine I've located ends up cheap enough to buy and repair - then I'll have two engines.

    Plan is to convert it to megasquirt for my application and run RWD via a TH700R4.

    Gareth

  7. #6
    Submariner409's Avatar
    Submariner409 is offline If it won't run, chrome it
    Automobile(s): 2002.5 F55 STS/65500mi, 2004 Ford F150 SuperCab4x4
    Join Date
    Feb 2006
    Location
    MD Eastern Shore - Kent Island
    Age
    74
    Posts
    45,017

    Re: '98 heads and cams on a 2000 block

    If you're going to twist this engine to longitudinal in your kit car, you could move the ignition coil pack and build a custom wire set for a much cleaner cam cover look (don't forget that the 1998 and 2000 have entirely different ignition systems, PCM's, ICM"s, different spark plugs, wires/no wires, cassette cavities, plug boots, cam covers, etc. etc.).................before you do the install, make sure the water pump tensioner and belt are new; no sense having a failure on the "rear" of the engine before its time.........

    Something else.....the crankshaft reluctor wheel and both position sensors are different in the two years - you may run into trouble trying to trigger a 1998 ignition with a 2000 block, and vice-versa.

  8. #7
    Radiogareth's Avatar
    Radiogareth is offline Cadillac Owners Member
    Automobile(s): Northstar 2000 V8 engine only
    Join Date
    May 2009
    Age
    57
    Posts
    9

    Re: '98 heads and cams on a 2000 block

    Thanks again for the pointers - in the short term I was going to re-use what the engine came with, adding a 36-1 trigger wheel to the crank and use the COP units, but eventually with polished valve covers I'll most likely use 2*4 EDIS packs and leads. As I do not have the matching key for the ecu it's going to be easier to get it running on a MS....probably. Also means I can do what I like with the fuelling.

    Gareth

  9. #8
    Submariner409's Avatar
    Submariner409 is offline If it won't run, chrome it
    Automobile(s): 2002.5 F55 STS/65500mi, 2004 Ford F150 SuperCab4x4
    Join Date
    Feb 2006
    Location
    MD Eastern Shore - Kent Island
    Age
    74
    Posts
    45,017

    Re: '98 heads and cams on a 2000 block

    OK.......That will work, as well as allow you some grooming of the ignition curves.

Quick Reply Quick Reply

Register Now

Please enter the name by which you would like to log-in and be known on this site.
If you do not want to register, fill this field only and the name will be used as user name for your post.

Please enter a password for your user account. Note that passwords are case-sensitive.

Please enter a valid email address for yourself.

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Bookmarks

Cadillac Posting Rules

  • You may post new threads
  • You may post replies
  • You may not post attachments
  • You may not edit your posts
Read about Lincoln | Buick | Kia Forte Forum
Need products for your Cadillac? Check out your options at the links below:

custom floor mats | Cadillac Chrome and Black Chrome Wheels | window tinting