: Modified Northstars - Need I say more?

01-08-07, 11:05 AM
Check out these puppies.

01-08-07, 11:53 AM
Good luck getting that to work with stock computers:thumbsup:

I really wonder why no one developed aftermarket parts for cars that have a N*, like everyone of us here:cookoo:

01-08-07, 03:23 PM
:helpless: Aftermarket N* parts? Those of us in here that would want to mod, even mildly, represent such an insignificant percentage of owners that the cost to R&D some non-GM part would make the final cost astronomical. And, until there's a significant number of RWD N* packages on the road, there won't be any aftermarket effort because you can't do anything to a sidewinder N* because of lack of space, not even rudimentary headers........Look at the new CTS/STS-V threads, and yes, there's a small choice of aftermarket stuff. I hope it gets better.

01-08-07, 05:05 PM
Pretty snazzy

01-08-07, 05:41 PM
looks like plenty of aftermarket stuff on those engines :P

Unless your doing a custom project, forget about doing to much "bolt on" to the factory engine in FWD models.

01-09-07, 12:49 AM
You can definitely add all of that to a Caddy with a Northstar. You just need a sawzall.

01-10-07, 12:41 AM
What happened to the photos I posted? Here they are again.........

01-10-07, 01:13 AM
looks like plenty of aftermarket stuff on those engines :P

Unless your doing a custom project, forget about doing to much "bolt on" to the factory engine in FWD models.

How much do you think it would cost to convert to RWD with a strong rearend? That'd be sweet...

Lots of info here for less dramatic N* mods...


Mark's turbo STS...


Some more modded N*engines...



Twin Turbo


01-10-07, 01:42 AM
well it depends, if you did a Monster Garage type teardown you would have to have custom PCMs and what not, it could be down and for a decent cost I'd assume depending on how much one did on their own.

I'd love to do a real chop job on the 98, really make it into a "Luxury Muscle Car". Main thing is going to be clearance with the hood, probibly would have to fabricate something to raise it up tad for more clearance. Problem is its also the daily driver so doing that kind of thing is certainly something for a project car.

Probably somewhere near 5-10 thousand dollars or even more.

01-10-07, 07:07 AM
A RWD conversion would pretty much necessitate making a new front subframe, carving out a transmission tunnel, figuring out a steering box to use, putting a fuel cell in to fit a rear end. Not that bad.

01-10-07, 09:54 AM
Use a Corvette transaxle. ....And a garage, with a lot of spare time on your hands.

01-16-07, 11:51 PM
Well I have access to a 4.0 Aurora which is a little brother of the N* and have been seriously thinking of buying it to go in my Monza instead of the 283(at least for now) and even slide one or two to4 turbos on it.
As for ECM simply order up a Megasquirt II ans use stock DIS controled by the MSII.
My Monza came factory with an electric FP so up grading isnt hard just swap in some better flex lines.
The big thing is I havent researched which type of bellhousng pattern the N*/Aurora has.
I even have found a fella who ground cams for the INDY engines too.
food for thought if I could getthe engine for a reasonable price.
I do know a fella who had an Aurora with a blown engine install a N* so I do believe ther are the same.
I'll give CMD a call and see if they have anything for N*/A install.

01-19-07, 07:10 PM
If I recall correctly, the N* bell housing bolts are in the same spot as the 3.8L V6 (3800 motor). If you wanted to use a different bell housing, the one's that fits transmissions like the the 700R4 or 4L60E are only one bolt off. You could do what CHRFab did and hack the eyelet for the bolt off and weld it back on in the right place.

01-23-07, 02:29 AM
I know Alan Johnson at Cadillac Hot Rod fab. He gave me suggestions for my car, when I replaced my North*..... What a shop he has!!

01-26-07, 04:07 PM
Wow, nice motors, too bad nobody I know could do that. Anyone here got forced induction on their n*s???

02-03-07, 12:24 PM
Wow, nice motors, too bad nobody I know could do that. Anyone here got forced induction on their n*s???

Mark99STS has a sweet turbo set up on his. Check it out:

http://www.markonemtg.com/marks99sts (http://www.markonemtg.com/marks99sts)

02-18-07, 12:30 AM
Nice Job on your STS. The Video was excellent. I would have like to look under the hood and under the car its self.
Question, Does the turbo get to hot for the front bumper? If not how do you have it cooled? and last how does the transmission hold up to 400 plus HP/Torque? Oh and that fan on the right side is that a tranny cooler?????
Last GM car I played with was a 96 Impala SS 383 supercharged LT4 with a
6 speed and 4.56 in the rear. Car made 772 HP and 781 Torque at the rear wheels.
I have looked at the LS6 Caddy and think of the possiblities.
Would love to hear more about your STS

Fiero STS
02-21-07, 12:22 PM
With the new rear drive versions of the N* the only thing holding this engine from becoming a street rod favorite is getting the ecm to work without "seeing" all the other modles such as ABS, ICM, RSS, etc. If you could just put in the engine and ecm, then people would start using them, then the aftermarket would fallow.

02-25-07, 10:47 AM
On the GM Performance website they show the Northstar versions, contacting them probably would warrant some valuable information :)

Tommy Deville
02-25-07, 10:07 PM
Hmmmmmmmm that looks nice