In 1968 Oldsmobile debuted the Rocket 455, an engine that was part of a family of 3 (with 400 and 425 cubic inch engines sharing a similar architecture). . T/As from this era are still a great buy for the hobbyist who cares more about enjoying his Pontiac than whether or not it can provide instant financial gain on a quick flip at the auction. This 455 lasted through 1976. After selling thousands of classic vehicles, we understand the process and will ensure that you have a pleasurable experience. No 455 engines were available at the start of the year, though one was introduced in the middle of the model year. 3) Standard and Alternative Wheel and Tire Sizes, 1975 Pontiac Grand Prix 400-4 V8 (aut. Imagine a car with a big V8, lots of rumble, mean disposition, and no balls! Some product and company names mentioned on this site may be trademarks of their respective owners. As for lubrication, Pontiacs with solid lifters tend to give a little too much oil up top, which usually requires some drilling, tapping, and the addition of a restrictor disc; TFX lifters come pretapped and feature a built-in restrictor disc that meters oil to the top of the valvetrain, which keeps more lube at the bottom end. Black vinyl bucket seat interior with shifter on the floor. Once you submit this form, you will be directed to our payment page to make your deposit. / 10.7 mpg (U.S.) / 4.6 km/l, more data: reference weights: estimated curb weight: 2050 kg / 4520 lbs, accelerations: 0- 60 mph 10.5 s; 0- 100 km/h 11.2 s (simulation automobile-catalog.com); 1/4 mile drag time (402 m) 17.8 s (simulation automobile-catalog.com). fuel consumption and mileage: average estimated by a-c: 22.2 l/100km / 12.7 mpg (imp.) However, due to concerns that not all cars were being assembled with the correct combination valve, a warranty recall was issued for the 455 H.O. We encourage inspections. The impact was felt at the strip as Car and Driver testers in "Firebird: Keeping the Flame Alive" revealed in the September issue that their 4,015-pound 455 HO T/A covered the 1,320 in 16.1 seconds at 88.8 mph. Factory or stock restoration. Buick 455 Engine Guide - 7.5L V8 Specs, Performance, Reliability Now you, like the Algers, can enjoy the fruits of Pontiac's mid-'70s labor. gasoline (petrol) engine with displacement: 7469 cm3 / 455.8 cui, advertised power . In its May '76 issue, Cars magazine placed Pontiac performance legend Nunzi Romano of Nunzi's Automotive in Brooklyn, New York, behind the wheel of the Sterling Silver '76 press car. Simply, TFX has addressed all the problems of the solid-lifter cam. 1975 Pontiac Grand Ville Convertible full range specs - Automobile-Catalog 1975 Pontiac Bonneville 4-Door Hardtop Sedan 455-4 V8 (aut. Home Pontiac Firebird 1975 Pontiac Firebird, 1975 Firebird. However, this engine was simply taken from Pontiacs Bonneville and was rated at a mere 200 horsepower. these restorations tend to be extensive and costly and iii). Naturally, we used as many stock Pontiac pieces as possible: windage tray, crankshaft, balancer, valve covers, oil pan, even the bearing-cap hardware, but be advised that much of this stuff must be replaced with stronger pieces if you plan for more power than we made. SPECIFICATIONS. After all, it was an HO, a venerable piece of Pontiac performance terminology that dated back to the early Sixties, meaning "high output." No. These can be referred to as customs or hot rods . They arrived at the seller's house and looked over the T/A from top to bottom. *This vehicle is being sold mileage exempt due to age. 3) Horsepower/Torque Curve, 1975 Pontiac Grand Prix 400-2 V8 (aut. We Were Wrong on the 2024 Camarobut at Least We Weren't Idiots About It! It was so severe that state officials shut down the highway for a few days to remove the few feet of snow that fell. W = Manual transmissions, Y and Z = Automatic transmissions, and X for both. Buy one complete and ensure your investment for the future. These restorations are when the body (or body and frame on a unibody vehicle) are disassembled and restored utilizing a rotisserie. Also, 4X heads, used from '73 to '75 on 400s and 455s, are fairly common. The
We had to go 0.060-over on the cylinders; Speed-Pro offers premium, file-fit plasma-moly rings for the weird Pontiac 5/64-1/16-3/16 ring-groove combo only in a 0.035-oversize, so a standard-gap Sealed Power moly ring was used. 1973-1977 Pontiac Grand Prix | HowStuffWorks The package was carried over for the '76 model year. 1975 Pontiac Firebird Trans Am Specifications - Conceptcarz.com Cast rods were standard in most Poncho engines including the 455 H.O. As displacement increased to offset the compression loss, the Super . Inspections should be performed prior to putting a deposit down on a vehicle. Copyright. During a recent conversation with Romano, we asked if he recalled modifying the car for a follow-up article. Buick GSs and Olds 442s could still be had with 455s, but power was down and curb weight was close to 4,300 pounds. Check out our 100% positive eBay rating. Under the Copyright, Designs and Patents Act 1988, the content, organization, graphics, design, compilation, magnetic
MONDAY-FRIDAY 9AM-5:00PM, BY APPOINTMENT ONLY The 455 Olds was first up ("455 Buildup: New Life for an Olds Engine," Oct. 2000). By checking this box, you agree to Nitto Tires, The Pontiac 455 V8 was The GTO and Firebird Brand's Last "Big Block", A History Of The Buick 455 V8, GM's Overlooked Big Block V8, The History Of The Oldsmobile 455: GM's 'Other' Big Block Muscle Car Monster, GM's G-Body Cars Offer Rear Wheel Drive Muscle And Luxury For '80s Era Collectors, Yes, I would like to receive emails from Nitto Tire and Driving Line. gasoline (petrol) engine with displacement: 6558 cm3 / 400.2 cui, advertised power: 138 kW / 185 hp / 188 PS ( SAE net ), torque: 427 Nm / 315 lb-ft . Paint is in great shape and really shows well. 3) Standard and Alternative Wheel and Tire Sizes, 1975 Pontiac Grand Prix SJ (aut. See Chart Below for actual codes. Without the Z28, the Camaros top performance offering was 155 horsepower, making Firebird the most powerful pony car on the road. We built the foundation with a two-bolt 455 block out of a '73 Bonneville wagon. Pontiac Firing Order Pontiac V8. 1973 Pontiac Firebird | Unique Classic Cars Cadillac Biarritz, Chrysler, Lincoln Continental, Oldsmobile, Convertible, Mercury, DeSoto, Ford, Chevy Belair, etc. Performance was down across the board and this car actually did pretty well when compared to other cars of the day. Power was transferred to the pavement through a limited-slip, 8.5-inch GM 10-bolt differential with a 3.23:1 gearset. We Were Wrong on the 2024 Camarobut at Least We Weren't Idiots About It! The company had never differentiated between big block and small block engine designs, having simply worked on the same V8 platform since the mid-1950s. Model TRANS AM. We do not recommend driving a classic car home. Within the three levels or restoration mentioned above, there can be varying quality from an in the garage / amateur restoration to a high dollar professional concours restoration. the vehicles are taken off the market and we turn down other buyers during the 72 hour period and ii). Furthermore, there's plenty of vacuum to manage power accessories. The buy-in price is much lower than those other years, yet the '75 Trans Ams offer nearly all of the attributes that make the Second-Gen T/As great. As popularity of the W72 400ci soared in the late '70s, many were literally driven to death and unceremoniously parted out or crushed after their tenure. Figure based on a stock vehicle with OH rates with $100/$300k Liability/UM/UIM limits. After the elimination of most of the pony car competition throughout the 1974 model year, Firebird was left to compete only with its GM sister Camaro. Total production was at 27,274, and this number would continue to climb tremendously throughout the end of the decade and into the 1980s. But readers saw no more. IT IS COMMON THAT THESE COMPONENTS WILL NEED UPKEEP OR ATTENTION. Even the Trans Am was kicked in the powerplant. The two-bolt main block has a 4.125-inch bore and the nodular-iron crank a 4.250-inch stroke. In addition, we are not you; purchasing a vehicle is very subjective. Our dollar figure in the "Shoppin' List" reckons $350 for a running engine and another three bills for machine work. The term "restoration" in context to the vintage car world has taken on a definition of its own. Due to our inventory size, we are unable to drive every vehicle for long distances. Other castings that fit this profile are 6X, 64, 7K3, 7M5, 4X, and 5C heads (castings numbers are found on the center exhaust ports above the manifold). For questions on what type or level of restoration of any of our vehicles in inventory please call our vintage sales expert today at 1-877-422-2940. That's right: these three GM-owned companies expended their own engineering resources to come up with a trio of unique designs rather than take part in the engine sharing that would only become common roughly 10 years or so down the road. Our recipe also included #96 heads from a '71 400, which yielded a 9.4:1 compression ratio from our TRW forged replacement pistons. Since our dyno engine included Eagle forged rods, we put them in our "Shoppin' List." They realized just how lucky they were when Carl woke up the next morning and turned on the Weather Channel to find that New York was hit hard. Privacy Policy, Cookies Policy and Terms and Conditions and Disclaimer. If the part number can be located on the distributor, we can look it up to find the original usage. This is despite the fact that, at the beginning the model year, the top performing engine was a 400 CID V8 that produced a mere 185 horsepower. . Carrying UPC M21, the close-ratio gearbox had a First-gear ratio of 2.43:1, and was the same unit available with the 400ci but with an 11-inch-diameter clutch disc to accommodate the additional torque output from the long-stroke 455. Its. You might just find that the 455 H.O. It was more akin to the '74 D-port 455. gasoline (petrol) engine with displacement: 6558 cm3 / 400.2 cui, advertised power: 126.5 kW / 170 hp / 172 PS ( SAE net ), torque: 414 Nm / 305 lb-ft, more data: characteristic dimensions: outside length: 5525 mm / 217.5 in, width: 1976 mm / 77.8 in, wheelbase: 2946 mm / 116 in, reference weights: shipping weight 1829 kg / 4032 lbs base curb weight: 1890 kg / 4167 lbs, accelerations: 0- 60 mph 11.4 s; 0- 100 km/h 12.1 s (simulation automobile-catalog.com); 1/4 mile drag time (402 m) 18.3 s (simulation automobile-catalog.com). Have a classic vehicle to trade or sell? 1973 Pontiac 455, two-bolt mains (YC-code), .030-inch overbore (462 ci), balanced, blueprinted for compression ratio and rod clearance, cylinders honed. Total T/A production rose to 27,274 in 1975 vs. 10,255 for 1974-that's about a 166 percent increase in sales during a recession year. The automobile-catalog.com website is only for the on-line view using the internet browser. No 0.030-under Federal Mogul Competition Series bearings are available either, so we defaulted to Federal Mogul OE-replacement copper-lead rod bearings and aluminum main bearings. No need to cringe: Precious few 455s, save for factory H.O. $27,900. 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It had an 067 camshaft with 273/289 degrees of duration and 0.407-inch lift, an 800-cfm Rochester Quadrajet, and an HEI distributor. The prices on these keep rising and you can get into this one for a very good price. IN ADDITION, MANY TIMES THESE VEHICLES SIT FOR LONG PERIODS OF TIME AND ONCE YOU BEGIN TO DRIVE THEM SEALS HARDEN AND GASKETS MAY BEGIN TO LEAK! 1-800-872-1965 Edelbrock heads use an adjustable valvetrain. and; Most of these vehicles do not have Carfax or Autocheck history reports; unless the vehicle is 1981 or newer, a Carfax or Autocheck history will not exist. We use Central Dispatch and they ensure all carriers are licensed, insured and bonded. Its modest advantage over them was that the 800-cfm Q-jet carb and ignition were dialed in and a special muffler was utilized. TFX claims nearly two dozen more horsepower for its solid-lifter cam over conventional hydraulic flat-tappet units of the same lift, duration, and lobe separation. of torque at 3,200 RPM. Full-size Pontiac cars were still in the 455 SD mix, too, and remained so until 1976. Pontiac Trans Am 455 Optional Packages - Got Torque? - MotorTrend Under the Copyright, Designs and Patents Act 1988, the content, organization, graphics, design, compilation, magnetic
these restorations tend to be extensive and costly. The remaining GSs and 442s were handling packages, the Road Runners' wings were clipped, and the Charger became a luxury car. Typically these vehicles will have custom paint work, aftermarket wheels, suspension upgrades, power plant transplants, etc. Pontiac created the musclecar, say the true believers, and HOT ROD should show it the respect it deserves! We spend time inspecting and disclosing items on all of our vehicles; however, at the end of the day, we are not you we highly suggest that you come and inspect the vehicle. Horsepower and Torque Though high-horsepower Pontiacs are known for weak mains and failures in high-revving applications (700-plus hp and 7,000-plus rpm), our goal wasn't enough to hurt a stock-block, even a two-bolter. In its May '75 issue, Motor Trend magazine tested a Stellar Blue Trans Am with a 400 four-barrel engine and automatic transmission. 3) Horsepower/Torque Curve, 1975 Pontiac Grand Prix 455-4 V8 (aut. 1975 Pontiac Grand Prix 4gen Coupe full range specs Buyers could also opt for the 400 CID engine, and production for the year was at 13,670. 1975 Pontiac Bonneville 4-Door Hardtop full range specs ii). In the 1968 Delta 88 it had 490 ft.-lbs. Unique Classic Cars. Year 1975. HOT ROD Captures the World of Racing: 1968 in Photos. 1970-'72 W-30 455 Oldsmobile | Hemmings GIVEN THE NATURE OF THE VINTAGE VEHICLES WE SELL, THESE COMPONENTS CAN BE WORKING AT ONE MOMENT AND NOT WORKING AT ANOTHER MOMENT. Induction, Ignition, Exhaust An Edelbrock Performer RPM intake with a 1-inch spacer was the overall best induction setup. This 1975 Pontiac Grand Prix is a very nice, 39,587 actual-mileage survivor that neatly combines a strong-running V8 with the best luxury features GM had to offer, all wrapped in some of the best styling of the decade. Most were driven hard or modified, and many are without their numbers-matching drivetrain, yet they remain restorable and offer many miles of driving enjoyment. The Firebird did start the automatic performance car; or what was a performance car. The incorporation of material or any part of it in any other web-site, electronic retrieval system, publication or any other work (whether hard copy, electronic or otherwise), also the storage of any part of this site on optical, digital or/and electronic media is strictly prohibited.