Re: Grand Nationals vs the SyTy's....why is the value so different?
well it's like this when you ask anybody about a grand national they will tell you about the 87 gn, not the 82 84-86 gns just the 87. they produced more gn's in 87 due to this. they extended the 87 build yr till december to send out more gn's
because of this the 87 gn is more desirable than a 86 GN and the only thing diffrent was the grill

.
here is some info
http://gnttype.org/general/v6hist.html
The production numbers, horsepower ratings and torque figures for the Turbo Regals and Grand Nationals from 1978 to 1987 are given below. This information is taken directly from the Facts and Figures Book, an excellent source of technical information for the Turbo Regals.
1987
GNX
547 Produced
276 HP @ 4400 RPM
360 ft-lbs of torque at 3000 RPM
Grand National (WE2)
20,193 Produced
245 HP @ 4400 RPM
355 ft-lbs of torque at 2000 RPM
Turbo T (WE4)
1,547 Produced
245 HP @ 4400 RPM
355 ft-lbs of torque at 2000 RPM
Regal Limited w/ Turbo
1,035 Produced
245 HP @ 4400 RPM
355 ft-lbs of torque at 2000 RPM
Base Regal w/ Turbo
4,268 Produced
245 HP @ 4400 RPM
355 ft-lbs of torque at 2000 RPM
Total Turbo Cars = 27,590
1986
Grand National
5,512 Produced
235 HP @ 4000 RPM
330 ft-lbs of torque at 2400 RPM
T-Type
1,921 Produced
235 HP @ 4000 RPM
330 ft-lbs of torque at 2400 RPM
WH1
463 Produced
235 HP @ 4000 RPM
330 ft-lbs of torque at 2400 RPM
LeSabre Grand National
112 Produced
140 HP @ 3600 RPM (Non-turbo 3.8L FWD)
240 ft-lbs of torque at 1600 RPM
Total Turbo Cars = 7,896
1985
Grand National
2,102 Produced
200 HP @ 4400 RPM
300 ft-lbs of torque at 2400 RPM
T-Type
1,575 Produced
200 HP @ 4400 RPM
300 ft-lbs of torque at 2400 RPM
WH1
525 Produced
200 HP @ 4400 RPM
300 ft-lbs of torque at 2400 RPM
Total Turbo Cars = 4,204
1984
Grand National
2,000 Produced
200 HP @ 4400 RPM
300 ft-lbs of torque at 2400 RPM
T-Type
2,238 Produced
200 HP @ 4400 RPM
300 ft-lbs of torque at 2400 RPM
WH1
1,163 Produced
200 HP @ 4400 RPM
300 ft-lbs of torque at 2400 RPM
Total Turbo Cars = 5,204
1983
T-Type
3,732 Produced
190 HP @ 1600 RPM
280 ft-lbs of torque at 2400 RPM
Total Turbo Cars = 3,732
1982
Grand National
215 Produced (Just 16 of which were believed to be turbocharged. i.e. Same engine as Sport Coupe.)
125 HP @ 4000 RPM
205 ft-lbs of torque at 2000 RPM
Sport Coupe
2,022 Produced
175 HP @ 4000 RPM
275 ft-lbs of torque at 2600 RPM
Total Turbo Cars = 2,022
1981
Sport Coupe
2,891 Produced
170 HP @ 4000 RPM
265 ft-lbs of torque at 2400 RPM
Total Turbo Cars = 2,891
1980
Sport Coupe
6,276 Produced
175 HP @ 4000 RPM
265 ft-lbs of torque at 2400 RPM
Total Turbo Cars = 6,276
1979
Sport Coupe
21,389 Produced
170 HP @ 4000 RPM
245 ft-lbs of torque at 2400 RPM
Total Turbo Cars = 21,389
1978
Sport Coupe (2BBL)
2,697 Produced
150 HP @ 3800 RPM
245 ft-lbs of torque at 2400 RPM
Sport Coupe (4BBL)
27,811 Produced
165 HP @ 4000 RPM
265 ft-lbs of torque at 2800 RPM
Total Turbo Cars = 30,507
TOTALS
Total Regal Grand Nationals produced from 1982 to 1987 was 30,022.
Total Turbo Ts produced: 1,547 in 1987 only.
Total Regal T Types produced was 22,806.
Total Turbocharged Regal Sport Coupes produced from 1978 to 1979 was 59,896.
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RAREST
Rarest Grand National: The 1982 with only 215 produced.
Rarest Turbocharged Grand National: The 1984 with 2000 produced.
Rarest Turbocharged Regal (non GNX): The 1987 Regal Limited with only 1,035 produced.
Second Rarest Turbocharged Regal: The 1987 Turbo-T with only 1,547 produced.
Rarest Regal Sport Coupe: The 1982 with only 2,022 produced.
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QUICKEST
Quickest stock Turbocharged Regal: The 1987 GNX.
Quickest stock Turbocharged non-GNX Regal: The 1987 Turbo-T.
Quickest Grand National: The 1987 Model.
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BUICK REGALS IMPORTED INTO CANADA
Year Total Regals Option WE2 (Grand National)
---- ------------ ---------------------------
1984 3,955 100
1985 3,670 143
1986 4,138 441
1987 3,578 1,695
1987 - 2,664 Regals excluding Limiteds **
1987 - 280 Y56 'T' package ***
** using the 3,578 figure, it can be concluded that 914 were Limiteds
*** GM Canada indicates that this figure is for models 4GJ47 only, therefore
not including Regal Limiteds.
Please note that all figures shown, except for WE2 obviously, include turbo and non-turbo cars.
Most of this information is taken directly from the "Facts and Figures Book". This book is an excellent source of technical (and interesting) information on the Turbo Buicks!