GN-GNX upgrade Questions...new member

trader7230 · 05-31-2007, 08:21 PM

Hi everyone, I am currently looking at purchasing a 1987 Grand National hard top. I would like to however upgrade the motor to GNX specs if it is possible at a reasonable cost.

I was wondering where can I find those GNX upgrades (both motor and body)? How much do you estimate it would cost? and of course, do you guys think its worth it? Or should I just buy some performance chips?

Thanks in advance

trader7230

Gnat352 · 05-31-2007, 08:32 PM

I don't think you will find many GNX motors laying around....and If ya do, prepare to pay BIG BUCKS.

You could make a GnX clone, by getting the fender flares,rims, louvers, and GNX emblems...Also heat shield. Other then that, it's just a regal...........

microELVIS · 05-31-2007, 08:38 PM

Your gn can be easily made to destroy a stock gnx. Is it just speed you are looking for ? then thats easy. With a set of rims and tires the gn can start to look similar as a gnx minus the flares and emblems of course.

The motors arent really that much different. Ceramic turbo impellor, intercooler, and ladder bar suspension are the big ones. The differential maybe, i dont remember.

It all depends I guess what you really want. If you've never owned one, they can be quick no doubt about it. Just need to learn a little bit.

trader7230 · 05-31-2007, 08:58 PM

Is there a particulat business that you guys would use to purchase the GNX emblems and fender flares etc?

Thanks

richie6 · 05-31-2007, 09:00 PM

The GNX is a wicked car but I'm more impressed by mods like extended wheel studs and strange axles, drag radials...stuff that you might need anyways. I'd save my $ for go-fast goodies (fuel pump, injectors, turbo, intercooler) and be happy you don't have a T-roof car.

Got any pics?

trader7230 · 06-01-2007, 12:20 AM

No car yet, I am still looking. I am looking to buy an 1987 Coupe GN.

blackgn1 · 06-01-2007, 02:25 PM

I would save the money for a few upgrades first. As stated, fuel pump, hot wire kit for pump, injectors, ect. I would make it safer to drive before I made a clone. These cars are 20 years old now.

05-31-2007, 08:21 PM	#1 (permalink)
trader7230 Registered User Join Date: May 2007 Posts: 9	GN-GNX upgrade Questions...new member Hi everyone, I am currently looking at purchasing a 1987 Grand National hard top. I would like to however upgrade the motor to GNX specs if it is possible at a reasonable cost. I was wondering where can I find those GNX upgrades (both motor and body)? How much do you estimate it would cost? and of course, do you guys think its worth it? Or should I just buy some performance chips? Thanks in advance trader7230

05-31-2007, 08:32 PM	#2 (permalink)
Gnat352 JCC RACING Join Date: May 2004 Location: NJ Posts: 4,293	I don't think you will find many GNX motors laying around....and If ya do, prepare to pay BIG BUCKS. You could make a GnX clone, by getting the fender flares,rims, louvers, and GNX emblems...Also heat shield. Other then that, it's just a regal........... __________________ FERRET JOE JCC RACING MEMBER #1951 87 "T" TE60,,60# injectors/TT Alky Chip,,ADJ FPR,,ADJ Wastegate,,,RJC Boost Controller,,Razor Alky,,3" SE Turbo DP,,Cotton Performance 3" Dual Exhaust,,5 angle valvjob/bowl work,,307 hotwired,,F-Body Radiator,,Casper's Dual Fans,,ATR Bar,,Comp 980's,,Powerlogger,,ScanMaster 2.1,,RJC Power Plate,,UMi Lowers,,Bilstiens in all corners,,New Springs,,Dutt Neck IC,,ART CARR 9.5 NLU Converter,,DYNOTECH HI-PRO TRANS, Nitto's....thats it for now...... 11.90 @110mph with 21PSI on pump and alky... 1.61 60ft on Nitto's...

05-31-2007, 08:38 PM	#3 (permalink)
microELVIS Registered User Join Date: Jan 2004 Posts: 225	Your gn can be easily made to destroy a stock gnx. Is it just speed you are looking for ? then thats easy. With a set of rims and tires the gn can start to look similar as a gnx minus the flares and emblems of course. The motors arent really that much different. Ceramic turbo impellor, intercooler, and ladder bar suspension are the big ones. The differential maybe, i dont remember. It all depends I guess what you really want. If you've never owned one, they can be quick no doubt about it. Just need to learn a little bit. __________________ 12.96 @ 104 17 psi

05-31-2007, 09:00 PM	#5 (permalink)
richie6 Irish Mick Join Date: Aug 2002 Location: Nanaimo B.C. Posts: 1,320	The GNX is a wicked car but I'm more impressed by mods like extended wheel studs and strange axles, drag radials...stuff that you might need anyways. I'd save my $ for go-fast goodies (fuel pump, injectors, turbo, intercooler) and be happy you don't have a T-roof car. Got any pics? __________________ 87 GN T-roof car. Bone freakin' stock original engine w/ 20k miles. Stock Turbo. Stock injectors. 10 yr old XP pump. Art Carr 9" 3500 non l/u, Art Carr shift kit. 90/10 & 50/50's. Waiting to build the Mother of all 109's. 1987 Park Ave T-Type 1994 Chev Silverado 1976 Barth 28' P30 454

06-01-2007, 02:25 PM	#7 (permalink)
blackgn1 The Dark Jedi Join Date: Jul 2006 Location: Winchester, TN Posts: 627	I would save the money for a few upgrades first. As stated, fuel pump, hot wire kit for pump, injectors, ect. I would make it safer to drive before I made a clone. These cars are 20 years old now. __________________ 1986 Grand National RJC Power Plate and Plenum, Accufab 70mm Throttle Body, RJC Engine Girdle with Crank Scraper, RJC Razor Pulleys, Diamond Racing Pistons, Comp Roller Cam, T&D Roller Rockers, Roll Master Timing Set, Motron 60 Fuel Injectors, Champion Intake, Ported Stock Heads, Cometic Head Gaskets, Turbo Tweak Chip, Russ Merritt Plug Wires, Walbro Fuel Pump with Hot Wire Kit, Mickey Thompson Drag Radials, Scan Master, 4" MAF Pipe, Terry Houston 3" Downpipe, Precision 6776 BB Turbo, Precision Stock Location Intercooler, Dual Nozzle ALKY Control Kit, RJC 3" Up Pipe, Power Logger, MAF Translator, LS1 Sensor 11.4 117mph 18psi Merritt Turbo Buick Performance Powerhouse Performance and Machine

05-31-2007, 08:58 PM	#4 (permalink)
trader7230 Registered User Join Date: May 2007 Posts: 9	Is there a particulat business that you guys would use to purchase the GNX emblems and fender flares etc? Thanks

06-01-2007, 12:20 AM	#6 (permalink)
trader7230 Registered User Join Date: May 2007 Posts: 9	No car yet, I am still looking. I am looking to buy an 1987 Coupe GN.

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