Nikolai Posted November 24, 2005 Report Share Posted November 24, 2005 Hey guys, long time lurker, but finally picked up my 2k Deville yesterday and already looking to mod it. I'm a long time LSx motorhead, and now I'm digging into the Northstar. I've read most of the info on this site and it seems this platform is pretty much in the dark past filters and exhaust. Has anyone done anything more significant to their cars? Tuning, cams, other? Lol, also, my rear passger side window will go down but not up and it sounds like it's off track, has anyone tackled that yet or do you all just send it to the shop/dealer? Thanks in advance. Nikolai Link to comment Share on other sites More sharing options...
Nikolai Posted November 24, 2005 Author Report Share Posted November 24, 2005 20 views and no one has any ideas? Link to comment Share on other sites More sharing options...
BodybyFisher Posted November 24, 2005 Report Share Posted November 24, 2005 Besides opening the exhaust and CAI there is very little you can do to this engine, it is pretty much fully optimized, understand that this is a 279 cu in engine putting out 275 and 300 horsepower. See these links: http://www.markonemtg.com/marks99sts/ http://caddyinfo.ipbhost.com/index.php?showtopic=7816&hl= http://caddyinfo.ipbhost.com/index.php?showtopic=7320&hl= http://caddyinfo.ipbhost.com/index.php?showtopic=6901&hl= Pre-1995 - DTC codes OBD1 >> 1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/ Cadillac History & Specifications Year by Year http://www.motorera.com/cadillac/index.htm Link to comment Share on other sites More sharing options...
JIMDTS Posted November 24, 2005 Report Share Posted November 24, 2005 Normally when someone Does this "20 views and no one has any ideas? " That's a SMUG reply This is a friendly forum If someone didn't reply it was due to they had nothing to say. I don't reply to posts that are smug in nature. But since it's a holiday you get a pass No mods that I know of the are worth doing Your window probably has a broken regulator Check (search) The forum Logan did a post about the repair of the regulators Jim Link to comment Share on other sites More sharing options...
Nikolai Posted November 25, 2005 Author Report Share Posted November 25, 2005 Ah thanks. I'll search for the window thing later. Turbo huh? How much can this thing handle boost wise? Link to comment Share on other sites More sharing options...
BodybyFisher Posted November 25, 2005 Report Share Posted November 25, 2005 Check this site http://www.chrfab.com/ and this link at that site: http://www.chrfab.com/Engines.htm We have custom pistons, rods, cranks, cams, and other modifications such as belt driven blowers and exhaust driven turbo chargers for the Northstar and Aurora engines. How much power do you want to make? A Weiand supercharger on our manifold puts out 600 HP with very conservative boost of 9 psi and 525 HP at 5.5 psi. These engines with rods, pistons, rotating assembly balance, head work, cams, springs, retainers, head studs, etc. runs approximately $18,000 New crate engine from GM that powers the all new Cadillac XLR sports car. 360 horse power 10.5:1 compression ratio Forged steel crankshaft VVT (Variable Valve Timing) controlled by the Magneti Marelli computer, hydrolically actuated cam phasers on all four camshafts for maximized performance. Electronic throttle control, no hard to route cables, integrates idle control. TPS sensor is all that is required at the gas peddle. Piston skirts are polymer coated Larger piston pins Front mounted water pump $4,500.00 Pre-1995 - DTC codes OBD1 >> 1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/ Cadillac History & Specifications Year by Year http://www.motorera.com/cadillac/index.htm Link to comment Share on other sites More sharing options...
epricedright Posted November 25, 2005 Report Share Posted November 25, 2005 Does "nickysantoro" come to mind for anyone else or is it just me? Link to comment Share on other sites More sharing options...
BodybyFisher Posted November 25, 2005 Report Share Posted November 25, 2005 http://www.chrfab.com/Engines.htm This is a 3300 Whipple supercharger installation with enough air for 20 lbs of boost, about 800 hp Pre-1995 - DTC codes OBD1 >> 1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/ Cadillac History & Specifications Year by Year http://www.motorera.com/cadillac/index.htm Link to comment Share on other sites More sharing options...
Nikolai Posted November 25, 2005 Author Report Share Posted November 25, 2005 Yeah, I was thinking more like mods that fit under the hood. Ok, next problem. Before I break anything, does anyone know how to get the right rear door panel off a 2k+ Deville? I found one screw behind the pull handle and popped up the window switch panel and found no additional screws. It looks like the panel is held on by nylon poppers, do I just pry on them untill they pop out or is there a more clean approach? Many thanks in advance of course, I'm following Logan's thread closely, but he didn't say hot to get the panel off safely. Thanks, Nikolai. Link to comment Share on other sites More sharing options...
JasonA Posted November 25, 2005 Report Share Posted November 25, 2005 Yeah, I was thinking more like mods that fit under the hood. Nikolai, as stated, these engines are already putting out a good amount of power. There won't be any simple "bolt ons" that you can do. The next step is major internal and external engine mods. Internal, they make racing cams for it, but those will really push the powerband up and it won't drive great in front of a heavy Deville. External, there was a project for a compact belt-driven supercharger, but that project has stalled because of computer issues. These are very complex powertrains and there are no simple solutions to more power. 275 or 300 hp out of 4.6 liters driving the front wheels is already exceeding what many thought possible when this powertrain debuted in the early 1990s. If you really want a luxury race car, might I suggest a Lincoln Town Car? The Ford 4.6L engine mods are endless due to the great aftermarket for the Mustang, and you could get a heavy duty RWD transmission for that car easier than you could for the Cadillac platform probably (since the Cadillac is the only application for the 4T80-E transaxle, performance builds are probably pretty rare/expensive). Jason(2001 STS, White Diamond) "When you turn your car on...does it return the favor?" Link to comment Share on other sites More sharing options...
Nikolai Posted November 25, 2005 Author Report Share Posted November 25, 2005 I'm not affraid of doing internal work or custom fabrication. I'm currently working on a twin-turbo set up for a fellow LS1 enthusiest. There is a very accomplished tuner near me, and I plan on calling him to see what he can do. I'm just curious as to what others have done, that's all. Link to comment Share on other sites More sharing options...
BodybyFisher Posted November 25, 2005 Report Share Posted November 25, 2005 I'm not affraid of doing internal work or custom fabrication. I'm currently working on a twin-turbo set up for a fellow LS1 enthusiest. There is a very accomplished tuner near me, and I plan on calling him to see what he can do. I'm just curious as to what others have done, that's all. That is why I gave you the site above, where you can purchase internal and external components and spend anything from $600 to $18K Most members do nothing more than CAT back systems, CAI and change their ignition components based on their perceived improvements in ignition wires and plugs. I say perceived because this engine typically runs best on OEM AC delco ignition parts. That is why I posted links to Mark99STS, who is taking modification to the next level. My discussions with Mark disclosed that the big stumbling block with the NS is the PCM that controls virtually everything in the car.... The engines sold at http://www.chrfab.com/ use and aftermarket engine management system, but if one of those engines were put into a Cadillac nothing else would work. The engine management system for the NS is extremely integrated and inflexible from what I understand, not to mention it's proprietary and no aftermarket chips are manufactured. By the way, when I say inflexible I am not implying that is a negative, I think the engine has been optimized to a point where going further will cause driveability, possible mechanical and emissions problems. See Mark's link above to his piggyback computer. He is working toward being able to influence the engine management system with the current PCM, then he plans to install a turbo charger. It will be interesting to watch Mark's progress. Pre-1995 - DTC codes OBD1 >> 1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/ Cadillac History & Specifications Year by Year http://www.motorera.com/cadillac/index.htm Link to comment Share on other sites More sharing options...
Webmast84 Posted November 25, 2005 Report Share Posted November 25, 2005 I had read somewhere that you can sand down the inside of the exhaust manifolds and gain extra HP on certain models. I'll get the link when I get home. Link to comment Share on other sites More sharing options...
Ranger Posted November 25, 2005 Report Share Posted November 25, 2005 I don't know enough about that to really argue it but I would bet that the gaines would be minimal if any at all. Link to comment Share on other sites More sharing options...
BodybyFisher Posted November 25, 2005 Report Share Posted November 25, 2005 I had read somewhere that you can sand down the inside of the exhaust manifolds and gain extra HP on certain models. I'll get the link when I get home. If you are speaking of porting and polishing the heads, that can be done, check this. It sure is expensive to extract additional power from it however. I would love to see and hear one of these engines run however. http://www.chrfab.com/Head_Work.htm Pre-1995 - DTC codes OBD1 >> 1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/ Cadillac History & Specifications Year by Year http://www.motorera.com/cadillac/index.htm Link to comment Share on other sites More sharing options...
TDK Posted November 26, 2005 Report Share Posted November 26, 2005 Folks, The larger, louder exhaust is reatively inexpensive bag for the buck. But the extra noise tends to run "against the grain" for me anyhow - as in why a Caddy (in particular a Deville) was bought ...(there are cheaper, faster rides). A high stall speed torque convertor would help the off-the-line power, but its not cheap. BTW1, Does anyone offer at larger dual exhaust from each manifold all the way back? Are the NorthStar manifolds tied into one just back of the engine? BTW2, Did Mark99STS ever get the switch to disable the traction control system to work? Add power to leave problems behind. Most braking is just - poor planning. Link to comment Share on other sites More sharing options...
BodybyFisher Posted November 26, 2005 Report Share Posted November 26, 2005 Here is the 96 to 99 Deville muffler system, in my discussions with Mark, he was saying that the crossover pipe is a big bottleneck, and he plans to eliminate it.. Pre-1995 - DTC codes OBD1 >> 1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/ Cadillac History & Specifications Year by Year http://www.motorera.com/cadillac/index.htm Link to comment Share on other sites More sharing options...
Webmast84 Posted November 26, 2005 Report Share Posted November 26, 2005 Here's the mod I was talking about. They even make mention of CHRFAB: http://www.cadillacforums.com/cadillac-tech.html#exhaust I need to do something with mine. Link to comment Share on other sites More sharing options...
BodybyFisher Posted November 26, 2005 Report Share Posted November 26, 2005 That sounds interesting, extruded-hone, sounds good, go for it and let us know. Before I took them off I would search down someone that knew what an extruded-hone was and that they had the ablility to do it. Pre-1995 - DTC codes OBD1 >> 1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/ Cadillac History & Specifications Year by Year http://www.motorera.com/cadillac/index.htm Link to comment Share on other sites More sharing options...
MARK 99STS Posted November 28, 2005 Report Share Posted November 28, 2005 Yes I did get the switch for the traction control and it works great. I know some of you wanted the details on this set up, but the guy who did it for me didn't even charge me for his time or parts as he wanted to experiment on my car so I can't provide you the details other than to say it was just relays with 1000 ohm resistor switched for each wheel housed in a little black box stuck under the dash. MARK 99STS TURBOCHARGED Link to comment Share on other sites More sharing options...
Nikolai Posted November 29, 2005 Author Report Share Posted November 29, 2005 Had exhaust put on today, Dynomax Bullet, and two Dynomax Super Turbos. Very nice mellow at idle and cruising. Step on it and it's very sweet. Power picked up as expected a little, not bad for $250. Link to comment Share on other sites More sharing options...
JimHare Posted November 29, 2005 Report Share Posted November 29, 2005 Ok, next problem. Before I break anything, does anyone know how to get the right rear door panel off a 2k+ Deville? AFAIC, if you want to know how to take apart and then put back together a 2k+ Deville, then TurboJimmy over on the "other" board is the guy to ask..not really sure if he's on here or not. He bought a "flood totaled" Deville that was in mud up to it's rear view mirror, tore the entire car apart, cleaned it, replaced a few parts, and put it back together..here's a link to his site..the guy's amazing, if you ask me.. http://turbojimmy.4t.com/ "For a successful technology, reality must take precedence over public relations, for Nature cannot be fooled." - Richard P. Feynman Link to comment Share on other sites More sharing options...
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