Pontiac 455 Hp

943 T/A and 85 Formula received the 455 SD. Data for the car edition of the year 1975 since September 1974 for North America. Horsepower numbers soon began to plummet into pathetic amounts. The Judge, as well as convertibles, was discontinued in ’72. The 455 wielded massive horsepower, but a new horsepower rating system and tighter emission controls drove the 455's power lower each year until GM abandoned the engine in 1976. These engines make are excellent for both street & strip, they can be driven everyday and raced on the. The blocks, as with our complete engines are fully prepped. Pontiac Rotating Assemblies. We stock a massive inventory of production Pontiac blocks, heads and crankshafts, to accommodate ALL your stock, street and strip needs. 5 litre naturally aspirated 8 cylinder engine, with 2 valves per cylinder that produces power and torque figures of 360 bhp (365 PS/268 kW) at 4300 rpm and 678 N·m (500 lb·ft/69. Check out this sweet first-time engine build of a Pontiac 455 Tri-Power. engines, and while they may appear identical, the deep-plenum floor on the 72 unit (No. 31 results for 455 pontiac heads ARP High Performance Head Bolt Kit Pontiac 400-455 cid. In 1970 Pontiac increased the displacement in an attempt to make up for reduced compression required by new government regulations. 8:1: 255: Manual: 11: 254: 2 bbl: WA: 455. Ford Reveals Mustang Mach-E. 97 seconds @ 108. Despite the lame factory specs of our late 455, it still has tremendous potential. Premier Pontiac Trans Am Dealers and Restoration: 78 trans am Blocker SE 500 hp. Originally a trim upgrade based on the Tempest, it spawned the industry changing signature muscle car, the GTO, in 1964. Low compression and very mild custom grind hyd roller cam with a F. *Note: There were 12,692 Manual Transmission and 70,590 Automatic Transmission units built in 1978 between the L78 and W72 models. Check out the latest pontiac firebird review, news, specifications, prices, photos and videos articles on top speed!. Torque Pump gas, street-strip combos include 400-428-455 block, 92+ octane, hyd. 56 results for pontiac 455 decal Save pontiac 455 decal to get e-mail alerts and updates on your eBay Feed. The book also suggests smoothing the lifter galley area to help oil. 2 grams on rotating (bearing) end. The engine was rated at 310 Hp but failed to pass EPA Emissions test. BOP Engineering, your source for High Performance Buick, Oldsmobile and Pontiac Parts BOP Pontiac Belt Drive Gen IV. fan ordered with this engine #9796134 / 914007 this is a L68M pontiac 455. *Note: There were 12,692 Manual Transmission and 70,590 Automatic Transmission units built in 1978 between the L78 and W72 models. The engine build exceeded my expectations in every way. Pontiac Bonneville, 1968-71 V8 400/428/455 Radiator [More Info] How to cool a 800+HP Nova with no room. We understand it's a disgrace of the sacrament to install a Chevy motor in your Pontiac. The engine was used across the Oldsmobile lineup through 1976 and horsepower ranged from 275 up to 400. Pontiac Engines, Early (1955 to 1979) Pontiac V-8 engine parts and engine building. The non-SD 455 engine was rated at 255 horsepower, and was standard in the Trans Am. Pricing starts at $400. Horsepower: Torque: Bore x Stroke: Compression Ratio: Oil Pressure @ 2050 RPM. Intake Manifold, Edelbrock, Performer RPM, Pontiac 326-455, Non-EGR Made for the 326-455 Pontiac V8 (except Ram Air V). These are based on Pontiac 400 or 455. 600-650+HP 625 ft lbs. This was a very strong statement indeed, but remember, the vaunted Corvette could only hand off 210 hp while the only producing 255 lb/ft of torque in the L82 version. Pontiac used the same codes on different year blocks. This would be a grim prelude to the future. The rear saw the lights stretched to the plate. The 455-SD or "Super Duty" engine was one of the last high-performance muscle car era big-blocks GM offered. DCI Motorsports Pontiac 400-455 stroker crate engine for street and strip use. With a rated life of 2,500 hours of operation, it can add benefit to any high-performance Pontiac V-8, but particularly those where extracting every last horsepower is important, or in instances where circulating coolant between rounds without the engine running can improve performance. Pontiac GTO, Pontiac Lemans, HP 400 4bbl 3Spd Manual WT 10. That performance stood for 16 years – until the ’89 15th Anniversary Trans-Am came along. charles coker, 1953 pontiac tech advisor. Click Here to Find Local Salvage Yards. Originally a trim upgrade based on the Tempest, it spawned the industry changing signature muscle car, the GTO, in 1964. The HorsePower guys prove that by extracting a 400 from a junkyard, machining the block and rebuilding it on a two-thousand dollar budget. 414hp/557tq. 1971 Pontiac Gto 'the Judge' 455 Ho #'s Matching Rotisserie *heavily Documented! - Used Pontiac Gto for sale in St. Powertrain offerings for the 1973 Pontiac Grand Prix were a virtual carryover from the year before. SD Performance spends an extensive amount of time on the dyno, at the track and on the street to develop some of the best performing Pontiac ported cylinder heads on the market today. Jun 10, 2014 · Displacement will somewhat dictate the peak horsepower rpm. Standard equipment 455ci - 7. 1974 Pontiac Grand Prix SJ. 71 455 HO's no. Find 1973 Pontiac Trans Ams for Sale on Oodle Classifieds. The standard gear ratio for the Super Duty model is 3. These engines went into the high performance Grand Prixes or the Catalina Enforcer police cars. Obviously things like camshafts and intake manifolds are easy enough to improve, but since Pontiac built all 455s. 73 Firebird Formula 530 hp. The engine had a bore and stroke, or size of the cylinder and distance it travels, at 4. Pontiac knew that increasing displacement meant similar horsepower could be attained at a lower RPM. The Super Duty 1970-71 engine had 335 hp and 480 lb/ft torque. 71 455 HO's no. The power output was listed as 290 to 310 horsepower by the factory, but most serious observers believe that these figures are quite conservative. To build a 500+ HP Pontiac motor with a budget of only $2500 is a tall order. High Output V-8 engine (rebuilt); automatic transmission; Rochester Quadra-Jet carburetor (rebuilt) Factory Honeycomb wheels; Air conditioning; power steering and brakes; PHS documentation; One of only 2,116 examples of the Pontiac Trans Am built in 1971. Pontiac GTO 455 Judge. 0 EFI system. 3 liter Magnuson Supercharger. There has been a bit of controversy over the years as to whether the actual power losses in Pontiac engines were as dramatic as the ratings indicated. Below are specifications for a custom-built, performance long block BUICK 455 CI with 360-400 hp and 440 ft lbs torque!. The rotisserie restoration included a complete overhaul of the drivetrain, beginning with a Gen IV LSX engine with LS7 aluminum heads. The 1970 No. All Pontiac Firebird 2nd-gen. The builder of this sharp-looking 1973 Pontiac Firebird Esprit coupe used the 455 SD Trans Am as the model for its transformation into an all-out Pro Touring machine. Engine, horsepower, torque, dimensions and mechanical details for the 1974 Pontiac Firebird. 00 – $ 1,560. The 200 hp 455 in³ V8 was optional on all models. Adding displacement is the easiest and most cost effective way to increase. 5, it was closely related to the Pontiac Tempest, but for its final year it was based on the. We used 2 x 650 CFM intercooler cores and built custom end tanks to. 00 360 400 4bbl 4Spd WT 10. This car is a reminder of the sad part of America's automotive history, so this GTO was a 455 "H/O", high output only by name, but it was powerful compared to most other American cars of the same year. Let us build you the engine you want in our full service shop. I am in need of a 73 firebird core support, anyone with words of wis dom or experiences with different brands? Anyone ever used "Gold Star" parts? best suppliers? (cross posted) See More. Learn more about: The Supercharger Store 350-455 Buick Engines at ProCharger. com, the ALL Pontiac Club for ALL Pontiac Lovers– dedicated to the preservation, restoration, and enjoyment of all years, models, and types of Pontiacs. The Pontiac 455 came in 3 versions. 12" bore and the 455 has a 4. go for building the oringinal 389 its always better when the numbers match. This engine with a Rochester four-barrel carburetor on top, produces 335 horsepower and 480 lb. May 17, 2012 · However, Pontiac debuted the 455 HO, an evolution of 1969-70’s Ram Air IV 400. Below is the technique I use. In 1973, Pontiac introduced the Super Duty 455 engine it used a similar camshaft specification to the Ram Air IV 400. The Rocket, along with the 1949 Cadillac V8, were the first post-war OHV V8 engines produced by General Motors. Selecting a Hydraulic Cam for your Pontiac Engine. This DCI Automotive Pontiac 455 makes nearly 2 horsepower per cubic inch, naturally aspirated on pump gas. Up for sale is my Pontiac 428 engine (Short Block only). 1970 Pontiac Bonneville 455 convertible This is a rare one! 1970 was the only year Pontiac offered the high power/high compression 455 V8 engine with 370 horsepower. 00" in the 400 to 3. 3 liter Magnuson Supercharger. About Contact Parts For Sale. The heart of the 1969 Firebird 400 option was the 330 hp Pontiac 400 engine. The name came from all the dyno testing we were doing on different combinations, this cam works so well in so many different applications we started calling it "Old Faithful" and the name stuck. 1973 Pontiac Trans Am SD-455 2-Door Coupe. Only 5,807 GTOs were built for 1972, with the 455 HO, now net-rated at 300 horses, remaining the top power option. Finding Buick 455 Engine Codes and VIN. I know this is a Camaro site, but the Firebirds and Trans Ams are sister cars to our cars. New tires , seat covers , stainless x-pipe, factory high flow headers, frame connectors. Re: 66 Pontiac Lemans 455 engine advice pontiac compression is real low on the smog motors - like 7:1 , cast rods limit just about everything you can do to them , heads will wake it up , I ran a smog motor 455 in a 2. 4 compression, rated at 335 net hp @ 4800 rpm and 480 lb·ft @ 3600 rpm: this is considered by many to be the most powerful engine Pontiac. Frustrating as it was, the culprit was Dan's weakening transmission. Heads, solid flat tappet, hyd. 040" over 455 has 464 cid. 25 ) based on 320 votes Up for auction is my very rare Luxury Lemans with a factory L75 455 engine!!!. i have a 1975 buick riviera with 455 engine. 265, 301, 307*, 326, 350, 389, 400, 421, 428, 455. 1,000-HP 2017 Trans Am 455 Super Duty Bows in New York Like the previous car, the exterior of the Trans Am 455 Super Duty is styled after the Pontiac Trans Am of the 1970s, but features lots. Find Pontiac 455 in Canada | Visit Kijiji Classifieds to buy, sell, or trade almost anything! New and used items, cars, real estate, jobs, services, vacation rentals and more virtually anywhere in Ontario. A very strong 400 cubic inch Pontiac engine is at the heart of this slick ride. gear it down to take advantage of the low end torque. Exterior Color We are going to change the car back to steel valve covers painted the correct Pontiac blue and add a new. The 455-SD or "Super Duty" engine was one of the last high-performance muscle car era big-blocks GM offered. 1973 Pontiac Firebird 455 Trans AM. Ram Air III and IV 400s remained available that year but were replaced in 1971 by the 335-horse 455 HO. 1974 Pontiac Grand Prix SJ. 1970 Pontiac 455 YH 4 bolt block 360 HP - $1400 (Ozark, AL) Selling this hard to find 1970 Pontiac 455 4 bolt main block with main caps, nodular iron crankshaft, aftermarket pistons and rods. 4 compression, rated at 335 net hp @ 4800 rpm and 480 lb·ft @ 3600 rpm: this is considered by many to be the most powerful engine Pontiac. 485428's came with 2-bolt caps, but are drilled for 4-bolt caps. 455 Pontiac V8 Starters and Starter Motors in-stock with same-day shipping. It is often considered the first true muscle car. The trim level inside quite nice. Find PONTIAC 7. Super Duty 455 - Limited production of 50 May 1st, 2017. It's newest model is an 1,100 hp street. I have a few projects (56 Buick , 55 Caddy) that could use a 455 Buick Olds or Pontiac engine. 1974 Pontiac Firebird technical specifications and data. This Trans Am is powered by the scarce 455-cid SD V-8 engine. My choice is the old 403 or 455 cu in engines. 455/250 HP 4bbl V8 Engine. Torque increased by 10 lb/ft to [email protected] rpm. The camshafts used in the Ram Air III and the GTO 455 HO were the same. BOP Engineering, we are your online source for hi performance parts for Buick Oldsmobile and Pontiac. the pontiac firebird 350 is one of the 22337 model family from pontiac. To make 500hp with a 455+cid engine with Edelbrock heads and mild cam timing around 230 deg's @. 4hp and 540tq with 232cfm head flow, and pushed my car to 12. Up for sale is my Pontiac 428 engine (Short Block only). Finding Buick 455 Engine Codes and VIN. Compression can be increased or deceased through proper cylinder head selection. Pontiac - 287, 301, 316, 341, 350, 370, 389, 400, 421 & 455 Performance level 3-4 - High Performance Compu-Pro - Intended for the performance oriented hot street application. gear it down to take advantage of the low end torque. 455/250 HP 4bbl V8 Engine. There are 9 1973 Pontiac Firebird Trans Ams for sale today on ClassicCars. Just buy the parts from us. Find Pontiac 455 in Canada | Visit Kijiji Classifieds to buy, sell, or trade almost anything! New and used items, cars, real estate, jobs, services, vacation rentals and more virtually anywhere in Ontario. Unless you have good parts laying around like Phil said, that's not gonna happen. Limited street or bracket race combos include 400-428-455 block, requires 110+ octane, solid roller cam(or super aggressive solid mech. It's important to know how to identify Pontiac heads in order to pick the right one for your engine. Otherwise, Pontiac stuck with the 350-, 400- and 455-cid V8s with up to 300 net horsepower (a new rating system). Replied by 1994FordF-150 on topic Olds 455 Vs Pontiac 455 Vs Buick 455 I didn't exactly grow up with these motors either but I've drivin the olds and the buick. The Pontiac V-8 block is constructed of cast iron, and though its displacement increased from 287 to 455 ci by enlarging bore and lengthening stroke over the years, the external dimensions didn’t waiver far from the original design. pontiac “the gto” 400/366 Below are specifications for a custom-built, performance long block PONTIAC “THE GTO” 400/366 -400 HP with 410 ft lbs torque performance longblock: 400 block bored, honed, decked and align honed. MSD 455 Pontiac V8 parts in-stock with same-day shipping. Advertisement. Research the 2006 Pontiac GTO at cars. Second was the L78 Pontiac 400 V8 with 180 horsepower and 325 foot-pounds of torque. The engine had a bore and stroke, or size of the cylinder and distance it travels, at 4. This former Chevy Camaro will blow anyone's doors off. We've done quite extensive testing on the dyno and track with these cranks and have worked very well. When is comes to tradional Pontiac V8 engines, we manufacture the most performance parts around. Big block Pontiac crate engines are also available in 428, and 455 versions. Rear wing is a Judge item added later. a Pontiac 350 Engine - Up To 450 hp a Pontiac 400 Engine - Up To 500 hp a Pontiac 428 Engine - Up To 540 hp a Pontiac 455 Engine - Up To 625 hp There tends to be some truth in the phrase "no replacement for displacement" when it comes to small or big block chevy motors. In 1965 the 400 and 425 cid big block engines were introduced. This Trans Am is powered by the scarce 455-cid SD V-8 engine. They are assembled complete except for manifolds, distributor, valve covers, and water pump. 5:1 for the 1971 model year. com, I have recently received a 541 CID short block from Butler. All 1970 GTOs with factory 455 option had the stronger Chevy 12 bolt rear end vs. 1 quarter mile) and on the dyno (311. Shop 455 Pontiac V8 Starters and Starter Motors and get Free Shipping on orders over $99 at Speedway Motors, the Racing and Rodding Specialists. Back in 1974, the Super Duty Trans Am was the undeniable king - it was the ultimate muscle car. Among the most legendary of engines Pontiac ever designed for the street, the SD-455 shared many dimensions and capacities with similar-vintage standard 455 and 455 H. I'm just looking for commentary on the pros and cons between these engines. Apr 24, 2017 · The Trans Am Company started to modify the Camaro and offer on the market a modern interpretation of the Trans Am. The Edelbrock part # 35970 Pro-Flo 4 EFI System for Pontiac 326-455 C. The Pontiac V-8 block is constructed of cast iron, and though its displacement increased from 287 to 455 ci by enlarging bore and lengthening stroke over the years, the external dimensions didn't waiver far from the original design. The May 7, 1973 changeover date is Motor Unit Number 709986 assembled on or about May 7, 1973 May 7, 1973 is the head assembly date, NOT the casting date. 2 grams on rotating (bearing) end. The question becomes, which of these motors is most desireable, reliable or rebuildable. Torque: 310 ft/lbs. 1955 Studebaker President. Below is the technique I use. It was rated at 185 horsepower and 320 foot-pounds of torque. The 455 is the block of choice by many Pontiac enthusiasts because it is a proven platform for building power. 1 liter) (3. Though many assume that all Pontiac cast-aluminum intake manifolds are created equal, we recently found that they're not. Pontiac produced cars offering 40 hp (30 kW; 41 PS) 186. These engines produce impressive numbers at the track (14. Pontiac GTO, Pontiac Lemans, HP 400 4bbl 3Spd Manual WT 10. There are 9 1973 Pontiac Firebird Trans Ams for sale today on ClassicCars. Shop MSD 455 Pontiac V8 parts and get Free Shipping on orders over $99 at Speedway Motors, the Racing and Rodding Specialists. Firebird formula 455 used cars Matching numbers 455 CI Ram Air III engine Factory Rated at 325 HP with 480 ft/lbs 1971 Pontiac Firebird Formula 455 Big Block. Application code YC, 325 horsepower, automatic transmission. It was 'sort of ' designed to replace the previous use of big block engines in the Buick, Oldsmobile. 4L LT1 V8 can be thanked for that millennial amount of power. i have a 1975 buick riviera with 455 engine. the Hand book says it is a good idea to remove the lifter galley flashing which as you can see is plentiful. Mar 31, 2012 · Horsepower: 175. The engine was used across the Oldsmobile lineup through 1976 and horsepower ranged from 275 up to 400. 23 performance axle ratio, semi-metallic front disc brakes, and a specifically tuned exhaust system with twin exhaust splitters. Shot fogger setup with big nos bottle setup with flo tech engineering. Swaney’s personal rear-engine dragster is the world’s quickest naturally-aspirated Pontiac, capable of knocking down 6. 1112012 DC 9G21 (07/21/69). 00 HP and lots of torque. It has a total of approximately 2000 miles. Not only did the engine carry a two- or four-barrel carburetor, it also featured compression ratios of up to 10. Though many assume that all Pontiac cast-aluminum intake manifolds are created equal, we recently found that they're not. I'm just looking for commentary on the pros and cons between these engines. 9799140 can come with 4-bolt caps, depending on the model the engine was in and the hp rating. The question becomes, which of these motors is most desireable, reliable or rebuildable. Pontiac built approximately 1500 15th Anniversary Trans Ams. up for sale is this attractive 1970 Pontiac Grand Prix SJ-455-HO. In 1979 Pontiac did not make available any 455 (cubic inch) engine. A 170 horsepower, 400 CID V8 was available, as were two 455 engines. 6 55-60 INT MAN 538177 61-62 389 62 D-Port 1. The Edelbrock part # 359700 Pro-Flo 4 EFI System for Pontiac 326-455 C. Last year of the 455 motor which was only available with a four speed transmission. Intake Manifold, Edelbrock, Performer RPM, Pontiac 326-455, Non-EGR Made for the 326-455 Pontiac V8 (except Ram Air V). It was rerated at 300 hp at 4,000 rpm and 415 lb-ft at 3,200 rpm. It has a total of approximately 2000 miles. Production Date Code on the block. Only at www. Unfollow pontiac 455 decal to stop getting updates on your eBay Feed. Trans Am Depot estimates that the 455 Super Duty Racing will run the quarter mile in the low 9s and possibly even drop. Tin Indian Performance is your source for high performance Pontiac parts, performance engine kits, balanced rotating assemblies, short blocks, and complete engines for any Pontiac application. Oct 30, 2016 · Pontiac Grand Am 455 Colonnade Coupe '73 From Wikipedia: The original Grand Am was introduced in the fall of 1972 as a 1973 model. We've done quite extensive testing on the dyno and track with these cranks and have worked very well. i gotta 62 cat with a 389. Going back to Pontiac’s origins as Pontiac Spring and Wagon Works, the company’s first cars were water-cooled high wheelers with approximately 12 horsepower and chain-drive. Pontiac cams will be referred to by the last three digits of their part numbers. You have to remember that less is more with a Pontiac. By that time, Pontiac V8s had catalytic convertors and other power-robbing economy and emissions changes. Only a true car racer/guy could understand. One of these is the 2017 Pontiac Bandit Trans Am 455 Super Duty which happens to be one of the most powerful production cars to date. Pontiac never. 4L LT1 V8 can be thanked for that millennial amount of power. 1970 Pontiac GTO "The Humbler" below. BP Crate Engine Upgrade. Frustrating as it was, the culprit was Dan's weakening transmission. Back in 1974, the Super Duty Trans Am was the undeniable king - it was the ultimate muscle car. The heart of the 1969 Firebird 400 option was the 330 hp Pontiac 400 engine. I am in need of a 73 firebird core support, anyone with words of wis dom or experiences with different brands? Anyone ever used "Gold Star" parts? best suppliers? (cross posted) See More. You do give up some horsepower, using a tripower on a large motor, but for a street car, the tripower has lots of eye appeal and plenty of low and mid-range power. The Grand Prix's base engine was the familiar 400-cubic-inch Pontiac V-8. It's important to know how to identify Pontiac heads in order to pick the right one for your engine. Now with online parts catalog, Secure shopping cart with online ordering, tech articles, and more. torque) with higher octane fuel such as 104 rm/2 without modifications. The Super Duty 1970-71 engine had 335 hp and 480 lb/ft torque. I ordered the thing back in Feb. As the manufacturer announced only limited number of 2017 Pontiac Trans Am 455 Super Duty to be made, the only lucky ones who gave a deposit to the manufacturer before May got first 50 models. It ranged anywhere from 310-365 hp. Click here for the episode on Detroit Muscle about a Bandit tribute car powered by a Butler Performance Engine. Very nice and streetable combo for this customer's 1972 Formula Firebird. Great condition. True Pontiac engines were made by the Pontiac Motor Division. 1973 Pontiac Firebird 455 Trans AM. Rods were fully resized using GM 455 rod bolts and balanced to within 0. Base, High Output, and Super Duty. 151" bore, but the most you can go is 4. With 114cc heads you're static compression ratio is around 8:1. Together with the casting code and casting date you can determine where what the engine is. 1000 horsepower 1046 torque. For sale is a very nice pair of freshly rebuilt, low mileage 1971 HO 455 round port heads. See: HPP 4X Head. You can identify Pontiac heads by the casting numbers/letters on the center two exhaust ports. 6 Litre engine and was capable of low to mid 15 sec quarter mile times at a little over 90 mph in a new Trans Am right off the showroom floor. This would be a quick way to verify it was originally a 455 car. It consists of letters A-L for month (A=January, etc. /455 block, very mild HYD ROLLER Cam, 8:1 c. Horsepower numbers soon began to plummet into pathetic amounts. Adding displacement is the easiest and most cost effective way to increase. Owner Bruce Fulper can answer ANY question for you. Mar 15, 2013 · can a 1975 buick 455 produce HP like older ones? Hi every one. Too many people with power adders anymore. ” That’s probably true since by 1973 Pontiac’s 455 cubic-inch V8 would have had 250 hp and 370 lb-ft of torque. A Pontiac 455 is more responsive than a Chevy or a Ford. This kit wires directly to your fuse box (ignition side) so the flap opens when the engine is started or, purchase the optional kickdown switch (listed below) that will activate the flap when stepping hard on the accelerator. **May be a partial list; does not include fees. 700-750+HP 650+ ft lbs. Among the most legendary of engines Pontiac ever designed for the street, the SD-455 shared many dimensions and capacities with similar-vintage standard 455 and 455 H. A very strong 400 cubic inch Pontiac engine is at the heart of this slick ride. fuel pressure. Pontiac installed a relatively mild 455 in the GTO that wasn't necessarily faster than its The new 455 only put out 360 horsepower for. It was rated at 185 horsepower and 320 foot-pounds of torque. Selling as I have decided to go bigger and run more horsepower. The end was coming on quickly, but Pontiac tried to keep the dream alive for a couple of more years w/ their Trans Am & GTO ‘The Judge’ cars leading the way. All of these kits feature Victor intake manifolds, E-CNC cylinder heads, Rollin' Thunder camshaft, installation bolts and complete gasket set. To make 500hp with a 455+cid engine with Edelbrock heads and mild cam timing around 230 deg's @. However, a buyer could order a LeMans Sport convertible with any of the three GTO options, and essentially have a GTO convertible. 5L/455 Engine Rebuild Kits and get Free Shipping on Orders Over $99 at Summit Racing!. The Super Duty 1970-71 engine had 335 hp and 480 lb/ft torque. We are able to do this because of our long time involvement in racing and performance street rodding 'and' because of our experience as a. The Super Duty 1970-71 engine had 335 hp and 480 lb/ft torque. This is one of Doug’s favorite builds. BOP Engineering, we are your online source for hi performance parts for Buick Oldsmobile and Pontiac. The 1971 455 HO was rated at 335 hp (250 kW) @ 4,800 rpm and 480 lb⋅ft (651 N⋅m) of torque @ 3,200 rpm. Pontiac installed a relatively mild 455 in the GTO that wasn’t necessarily faster than its The new 455 only put out 360 horsepower for. New on the options list was Pontiac’s 455-cid V-8, rated at 360 horsepower. General Specifications for the 1968 400/430 and 1970 Buick 455 Cubic Inch Engines. They used the HO moniker to counteract the perception of lost performance. Dec 31, 2009 · It paled in comparison with the high horsepower 400 and 455 equipped Formulas of the early 1970s, but for 1979, 150 horsepower was more than most of the competition. Pontiac Performance Crate Engines. The bore was kept the same and the stroke was extended. We also have combinations for circle track, truck pulling, marine and more. The result was the 1970 Pontiac GTO 455, which was stuffed with a beefy 455 HO V8 long-stroke engine. In light of this, the 'Year' entry, as indicated by the chart below, may actually represent the year that the heads were cast, versus the year that they were actually installed on an automobile. ENGINES We are your one-stop source for Pontiac Performance from parts to complete dyno-tested engines! We have engines for any application from 12 second daily drivers to 10 second pump gas street engines to 7 second race engines. Come join the discussion about performance, modifications, troubleshooting, maintenance, history, and more!. Cylinder heads are inspected and magnafluxed by our local machine shop to make sure that they have no issues. PerTronix D1270 Flame-Thrower Race Distributor HEI Pontiac 301-455 Black Cap. ) The 455 V-8 with four-barrel carburetion was down to just 200 horsepower; it remained standard in the SJ. After driving the car for a while, the race bug bit, and I decided to build a 428 and do some bracket racing. In this race it is obvious that the Pontiac had a better time, but the Mustang with his small-block engine is held tightly against his big-block opponent. Unless you have good parts laying around like Phil said, that's not gonna happen. They are assembled complete except for manifolds, distributor, valve covers, and water pump. Dec 22, 2008 · A bone stock 1970 GS 455 Stage 1 as tested by Motor Trend magazine (January 1970 issue) ran the quarter mile in an earth shattering 13. fan ordered with this engine #9796134 / 914007 this is a L68M pontiac 455. Engine, horsepower, torque, dimensions and mechanical details for the 1974 Pontiac Firebird. 00 360 400 4bbl 4Spd WT 10. The Pontiac 455 engine was its pinnacle of power. A performance modified Turbo Hyra-matic is shifted by a dual-gate Hurst shifter. Standard equipment 455ci - 7. It's newest model is an 1,100 hp street. True output is 525 Hp @ 7500 for GTO and 475 Hp @ 7300 for Firebird. Some say the 400 can be revved a bit higher. 2018 Pontiac Trans am 455 Super Duty Prices, Release, Order. Mounts on passenger side.