I was blessed to co-own one of these awesome vehicles. I got mine in 1981.
It needed a bit of maintenance. The clutch was gone, the M91 Muncie 4 speed needed work. The counter shaft bores were oblonged from the engines massive torque. I knew a tranny shop here in Eugene and they bored the holes out and steel sleeved them along with several new gears, syncros etc. it was upgraded. New Cloyes Tru-Roller timing chain, a highly modified Q- Jet , Acell ignition parts turned it into a fire breathing monster.
GOD Knows that I wish I still had it. But my X and co- owner took it to Ohio where she blew up the 428 and sent it to the Wreckers.
Pontiac GTO Royal Bobcat Special specs
Car type | Coupe |
Curb weight | 1594 kg (3514 lbs) |
Dimensions | 5.09 m (201 in) long, 1.83 m (72 in) wide, 1.28 m (50 in) high |
Wheelbase | 2.85 m (112 in) |
Introduced | 1968 |
Origin country | United States |
Views | 7k |
Submitted by | Super8 |
Performance
0 - 100 kph | 5.4 s |
0 - 60 mph | 5.2 s |
0 - 100 mph | 12.9 s |
Est. 1/8 mile | 9.4 s @ 87.0 mph |
1/4 mile | 13.8 s @ 104.4 mph |
Top speed | 247 kph (153 mph) |
Powertrain specs
Engine type | Pontiac V8 428 Cu |
Displacement | 7.0 l (428 ci / 7014 cc) |
Power | 395 ps (390 bhp / 291 kw) @ 5700 rpm |
Torque | 651 Nm (480 lb-ft) @ 3200 rpm |
Power / liter | 56 ps (56 hp) |
Power / weight | 248 ps (245 bhp) / t |
Torque / weight | 408 Nm (301 lb-ft) / t |
Transmission | 4 Speed Manual (3.55 ratio) |
Layout | front engine, rear wheel drive |
GTO Royal Bobcat Special competition
Marlo Breding 7y ago
Super8 12y ago
On the other hand, according to Car Life, the Ram Air powered car "likes to run between 3000 and 6000 RPM. Below 3000, the GTO ran flat and a bit rough. Part-throttle driving at 2000 RPM around town was difficult and unpleasant. Freeway cruising at 4000 RPM is anything but pleasant and promises short life for hard working engine components. Also, driving the GTO on wet roads with this deep geared axle was thrilling. Rear tire breakaway could be provoked by a slight jab at the accelerator, sending the car into a minor skid that usually used up more than one lane of space.". This is one of 3 perfect High Performance GTO ever made. The other is original Bobcat and Ram Air V.
Super8 12y ago
This one is special. Royal Pontiac, located in Royal Oak, Michigan, offered a 428/Royal Bobcat conversion of the 1968 GTO. For $650.00. a 390 horsepower 428 cubic engine was installed in place of the 400 cubic engine. The 428 CI engine was disassembled and blueprinted to produce more than the advertised factory 390 horsepower and easily spinning to 5700 RPM's. Car and Driver road tested the 428 CI powered car with the 3.55 gears. It could do 0-60 MPH in 5.2 seconds, 0-100 in 12.9 seconds, and the 1/4 mile in 13.8 seconds @ 104 MPH. his compared to a Car Life road test of a 400 CI powered GTO with a Ram Air engine, 4-speed transmission, and 3.90 gear which did 0-60 in 6.6 seconds, 0-100 in 14.6 seconds, and the 1/4 mile in 14.53 @ 99.7 MPH. Car and Driver wrote that the 428 CI powered car was "a fine, exciting car for either touring or tooting around in traffic. Not overly fussy. Not difficult to driveā€“-up to a point. Too much throttle at the wrong time will spin the car, or send it rocketing off the road and into the farmer's field. You can light up the car's tires like it was an AA-fueler anytime the notion seizes your fancy."