pontiac 428 tri power specsamerican airlines check in customer service

6) I heard you carry a replacement for the needle/seat. Boasting excellent street manners and economy while operating on its center 2-barrel carburetor, and strong acceleration as its end 2-barrels progressively opened, it was well marketed and quite popular with buyers through 1966. . This money bought a potent 389 V-8 with 267-283 bhp . The casting number This original GTO is often referred to as the first American muscle car. Both 65 and 66 intakes are attached to the heads with 10 bolts. 14. Read answer to question 9. This is due to the combustion chamber design. Even with the number removed, it should be quite obvious He attributes the gain to the tripower's shorter and straighter intake runners and its greater CFM flow. But, unless they specialize in Pontiac tripowers, they won't know if your carbs are right in the first place. Chevy V8s. Light Em Up: Drag Racing, the HOT ROD Power Tour Way. kit, and aluminum fuel lines. . excessive fuel pressureCommon problem when first installing a tripower. W120 Engle high performance camshafts for VW Volkswagen. The 421, 428, and 455 engines use a 3.25 diameter main bearing. My '65 GTO--421, tripower, automatic--turned a 12.7 quarter mile at 108 mph the second time out. High pressure does not equate to a good pump, but poor quality control on the part of the manufacturer. The engine employed 1.75-inch headers with three-inch collectors and one thermocouple on each cylinder bank." One is made in China and the other cast, I believe, in Texas. Lift 430, Duration 284. Your carbs need restored, not rebuilt. I have re-rebuilt many tripower carbs. The seats can loosen in which case you will have a flow of fuel into the floatbowl whenever the motor is running, causing major flooding. If you read this carefully, you will be surprized. Camshafts with long durations require high compression ratios and extensive head work. Manifold Only on the underside of the manifold, so manifolds can still be identified. The Pontiac 428 was introduced at the same time as the Pontiac 400 V8 in 1967 and used primarily in the Grand Prix, but also for the legendary GTO and Firebird models.. But, when you put them on the car and find your reproduction linkage won't fit-they can't help. The block was filled with a 4.25-inch Eagle cast-steel crankshaft, a set of 6.800-inch Eagle forged rods, and custom 0.040-over Wiseco pistons. casting 7013206, bowl casting 7029683, throttle body casting 15211), Center carburetor Rochester did not start putting carb numbers on the 2 bbls until 1968. Make sure you brackets for the alternator, waterpump and airconditioning come off motor with the same style waterpump. The Pathfinder series, its name suggesting a car suitable for the exploration of Canada's rugged terrain, was . Lift 435, Duration 294. Also included in the basic option was a three-speed Hurst floor shift, heavy duty shocks and springs, a 3.42:1 performance rear axle, chrome engine parts, full wheel discs, and fender pinstriping, details that raised the price of the package to $419 for coupes or $397 for convertibles. Canada Science and Technology Museum 2011. Re-use your brass floats if they are not leaking. Follow along as Weber Racing builds a 21st century Tri-Power Pontiac with due respect to Pontiac's performance heritage. (S/T 421) 7025075 (airhorn casting 7017917, bowl casting 7019927, "The 1965s are the most highly sought after," Gunnell wrote, "even though they had the largest production." pump pivot? In any engine an increase in compression ratio will provide a lock-step improvement in thermal efficiency. V-8 to 330. This site uses Javascript and the Adobe Flash Player plugin. They are offering a simple rebuild that worked when these carbs were 5 to10 years old. If your car was fine with no leaks earlier, it is not the adjustment. Casting # 9778818. What is wrong? The GTO is often considered the first muscle car. casting 7017917, bowl casting 7019929, throttle body casting 3530), Center carburetor (3-speed A/T) 7019069 (airhorn casting In any case, Pontiac continued using the same castings for this cover until about 69. Many people refer to the tripower intakes from 57-63 as "boat anchors". The engines feature a cast-iron block and head and two valves per cylinder. A 428 HO engine remained available, but was not offered with Tri-Power. Picture a 400 cubic inch engine running at full throttle. With the exception of the Corvette, the 3x setup was discontinued completely in response to a 1966 GM policy. Note the difference between 65 and 66 center carbs. Tri-Power intake manifold. loose seat (check this out first!! The 1964-66 units are, by far, the most popular. Others The '65 intake has 2 choke tubes on the crossover that go directly into the manifold. I do believe that even when these units were new they freightened many merchanics and owners. The truth is, they didn't know about them and didn't care to learn. 1967 Pontiac GTO Sold Enlarge Photo Stock V17713 Body Style Coupe Engine Size 428 TRI-POWER Transmission . HOT ROD Captures the World of Racing: 1968 in Photos. On a '64-'65-'66 Tripower, I count 8 sites for possible leaks, versus 2 for a 4 barrel. Also gone was the . Muscle Car Image Gallery To create the GTO, Pontiac sidestepped GM's prohibition on intermediate-sized cars having engines over 330 cid. This money bought a potent 389 V-8 with 267-283 bhp, bucket seats, center console with vacuum gauge, special Morrokide interior, and unique exterior badges. Linkage Brawny Bottom End The foundation for this build was a bulletproof aftermarket Pontiac block from the specialists at Kauffman Engineering. First, you need to rule out dirt or rust getting into the carbs from the fuel system. To make the numbers comparable, you must divide the 2 bbl flow numbers by 1.414. 1967 GTO 400 a/t. The stroke is 4", the main journals are 3.25". Yes, they can put in new gaskets and set the floats. * Fuel lines most of the 1961 and newer fuel lines The Tri-Power package was available from 1964-1966. Performance Powertrain specs Grand Prix 428 HO competition Ford Mustang GT 390 vs Pontiac Grand Prix 428 HO Ford Torino Talladega Ram Air vs Pontiac Grand Prix 428 HO Reply 205 30744 lap times and 35378 quarter mile, 0-60 times for 13785 cars and 326 bikes. Once at Bitner Automotive, Mark Erney was responsible for connecting the 421 to the dyno. The force of the exhaust is too intense for a gasket to stop. First, a 455 has the same deck heigth as the 326, 350, 389, 400, 421, and 428. The end result is an engine that still retains the look and attitude that made the GTO famous and produces power far beyond factory levels. I replace about 50% of the center shafts I inspect. Well, now, instead we are working with six open venturi, not two. This really isn't too difficult after looking at these carbs and working on them for several years. plug and housing Although the 428 was modeled after the Pontiac 421, it had a cast iron crankshaft rather than the steel used in the 421.The 428 was one of the "long journal" V8 engines that Pontiac produced. Or, blocking at least one side of the crossover, or Phenolic spacers under the carbs. The Pontiac fired right up and he spent a good deal of time making break-in pulls to seat the rings before we went for the power." RELATED: The 15 Fastest Cars Pontiac Ever Produced. When an engine operates, friction is produced and any efforts taken to minimize it will show up on the dyno needle. Its well-executed styling combined with an impressive quarter-mile time (under 15 seconds) also contributed to its popularity. With three BG two-barrel carbs, each flowing 250 cfm, on a redesigned high-flow aluminum intake manifold, the Tri-Power mystique was preserved, yet modernized. These are 7012351 (front), 7012352 (center), and 7012353 (rear). throttle body casting 3530), Rear carburetor (A/T, S/T 389) 7024179 (airhorn Update: I restored a 1965 GTO in 1994. Vacuum motors The last three digits of the part number are If you are using an aftermarket cam you must convert the heads to an adjustable valve train. Lobe separation is 110 degrees. All Pontiac tripower water necks bolt to the Buyers could spec a delete-option 400 2-barrel or move up to two 428s. The car is hard to start and blows black smoke. I need a 1964 trpower front carb # 7024178 for my 64 GTO with automatic transmission. At idle my center carb drips fuel, making the car run rich. There were multiple versions of the engine produced each year of it manufacture. Customers with the Tri-Power model could indulge in an optional limited slip differential and metallic brake linings. By the time you remove the airhorn and turn it over to inspect it, the particle has fallen out. 7017917, bowl casting 7019927, throttle body casting 3530). Next month, we'll start it up, break it in, and put this beast on the dyno to see how much power it makes. DVD Tripower Basics, Mods, and Troubleshooting, choosing a selection results in a full page refresh. They would be interesting on a nostalgia street rod, but not on your muscle car. Its frequent usage, even without knowledge of its origins, is yet another sign of the Tri-Powers unique historical significance. Heads from 61 to 64 have different water passages, a different bolt pattern, and a different angle where they meet the intake than do the 65 and later heads. My throttlecable bracket bolts to the intake just fine, but the cable will not give me full throttle. At this time, the Canadian-made Pontiacs were virtually identical to those produced in the U.S. A 2004 GTO driveline will power it. For 1965, Pontiac carried over the 389 and 421 V8s, with the most powerful being the Tri-Power carburetor versions. UPDATE.I sold this car in the summer of 2008. Front oil filler If you want to run pump gas, lower compression ratios work better with less duration and milder head porting. 1957, 1958, 1959, 1960, 1960 SD, 1961, 1961 SD, 1962, 1963, 1964, 1965, 1966, Vacuum motor 1998829 (mounted on rear carburetor), Vacuum control switch 7011310 (mounted on center Open Air Cleaners End carbs may also be involved. Pontiac 1965-71 350 400 428 455: Pontiac: Manifold Only (Limited) . I had one customer who insisted he could not have fuel pressure problems because he had a replacemnet pump he bought at a discount auto parts store. Carburetor casting numbers - It is IMPOSSIBLE to A lofty goal when one considers the small throat area of the #716 cylinder head. It is a '60s Fiberglass Trends hood scoop that is molded to the hood. Examine the above numbers. A year later, Pontiac applied the huge 421 V-8 as standard in the 2+2 package, with fender louvers and special hood/deck badges to identify it. In 1986 I restored a 1966 GTO and, of course, put a tripower on it. Add Electric choke center carb option comes with electric thermostat spade I drove it 200 miles to the track and home. 5 December 2007. All Rights Reserved. Weight was reduced, and airflow was improved yet again via the addition of a Barry Grant Six Shooter induction system. However, starting in 72, Pontiac has an extra exhaust crossover port in one of the heads. Don't ever use rubber ruel lines on a tripower. When choosing a camshaft, determine the engine size . When they are right, they are right, and when they are wrongwell, you know the result! Some suppliers carry a reproduction throttle cable. Typically, the end carbs are set at 23/32" from carb airhorn gasket to seam on brass float, with 1 24/32" drop. She enjoys covering an array of topics, from classic muscle cars to military vehicles and opulent supercars. End carb shafts are not usually as effected, but I am replacing about 20% of those I inspect. Notice that Pontiac (as well as Oldsmobile and Cadillac) used metal fuel lines. Part number is 540510. 7036175 (airhorn The standard motor for the 1968 Grand Prix was a 4-barrel 400 rated at 350 horsepower. (airhorn casting 7017917, bowl casting 7011929, throttle body casting 3530), Center carburetor (S/T 389) 7023075 (airhorn The name Gran Turismo Omologato was boldly appropriated from the Ferrari GTO. The '61-'63 intakes are virtually the same and interchangeable. carburetor), Front carburetor (A/T, S/T) 7013063 (airhorn casting I don't really get this question, but put it in so I could answer it. The 15 Fastest Cars Pontiac Ever Produced, The 1970 Buick GSX 455 Is A Forgotten Muscle Car Gem. I have never seen accurate firutes on the CFM ratings on 65-66 tripowers. The throttlebodies are different, too. These models offered a 2-speed Powerglide Auto or 4-speed Muncie M20/M21 manual transmission. throttle body casting 3530), Rear carburetor (A/T 389) 7024179 (airhorn casting By 1958, the post-World War II economic boom began to decline and car sales slowed for many car makers except Pontiac which saw another record-breaking sales year. This would make the Pontiac less octane sensitive. The famous 409 had a pair of them. Brea, CA. If that was the case then the engine would not have made 350 hp on the dyno with excellent loading and good fuel distribution. Light Em Up: Drag Racing, the HOT ROD Power Tour Way, Maximum power with three carburetors functioning, Power with only the center two-barrel operational Timing: 36-degrees Jets: 0.064. 1965 Pontiac GTO Maybe a set of Weber side-drafts. Air Cleaners In any case, the tripower reproduction bracket will come closer to the mark than the 4bbl bracket. Other times, it drips off the end of the throttleshaft. This new model was developed in response to consumer preferences, and also because of Canadas restrictive import duties and tariffs. With Filters, Four Inch Louvered Do not tap or hammer on the airhorn to "break the float loose." Can you tell me aboout it? Maintenance and Tech Sorting through Pontiac's Ram Air engine production Reggie Horning 09 January 2018 Share From the 421 Super Duty to the 389 Tri-Power, Pontiac Motor Division developed some of the most infamous high-performance engine programs among the Big Three during the muscle car era. As the author, this test not only satisfied Jim's curiosity but also proved something I believe more valuableit debunked the age-old myth that a Tri-Power manifold would offer poor fuel distribution during street driving. 3 x Carbs Standard zink coating - Center carbs of 64-65 tripowers have 1 1/4" venturi. with Tri-Power induction was Pontiac's hottest street engine. Additionally, the GTO is going to be a real corner carver, so any weight savings off the nose will benefit handling. Air Cleaners Sometimes it pours out of the top and I have to remove the airhorn because the float is stuck. We Were Wrong on the 2024 Camarobut at Least We Weren't Idiots About It! Three runs were made with each set-up. In 1967 there was a 360 and 376hp version. The car is hard to start and blows black smoke. I am much more comfortable with the first method. I have since added electronic breaker for reliability. Custom Polished Stainless fuel lines with fuel block, Chrome Fuel Block Kit There is a relief valve in the pump that controls excessive pressure. Because of this, flow numbers based on venturi diameter have to be adjusted between the four barrel and the two barrel. The '59 and '60 intakes are similar, but unique. The center carb supplies the fuel at all times, except under full throttle. It is a known fact that a person's pupils dilate slightly when viewing something pleasant to the eyes. . Now available in basic and master kits with Engle lifters, springs, chromoly retainers and valve keepers. The Pathfinder series, its name suggesting a car suitable for the exploration of Canadas rugged terrain, was joined by the up-scale Pontiac Laurentian series, named after the popular mountain vacation region of Quebec. It is unknown to the author why Pontiac issued a He accomplished this by pushing the envelope for compression ratio to 10.6:1 and tricking the combustion event to bleed off some of the cylinder pressure at light load with modified cam timing. Many of my customers have worked with Dave and give me positive feedback. FACTWhat? Students of the Pontiac V-8 know that while the 389 was a great engine for its time, the introduction of the 400 in 1967 also brought several design changes that significantly improved performance. The unit was looking shabby, so I pulled it off and restored it again. Click on the car you want to choose then click Submit. The tripower intake extends further back toward the distributor than the 2 or 4 barrel intake to accommodate the rear carb. carburetor does not match the information contained herein for the given tag The PlanTo marry vintage flavor to modern technology and increase power at the same time, Barry turned to Bryan Weber of Weber Racing Equipment in North Ridgeville, Ohio, who formed a plan that put the goals within practical reach, and his dad, Dave, assembled the engine. You will see the percentage of votes cast for each car on a graph once you have completed your vote. They can't offer you any advice. I would not recommend it. When owners rebuilt the carbs, these had to be disassembled. If not, submurge in near boiling water. casting 7031587, bowl casting 7031624), Center carburetor The scoop really sets it apart from the appearance of all the traditional '64s. [But] as with any performance automobile, gas mileage wasn't anything to shout about. 7013206, bowl casting 7011997, throttle body casting 15211), Rear carburetor (S/T) 7013065 (airhorn casting casting 7013206, bowl casting 7029683, throttle body casting 15211), Center carburetor (A/T 421) 7024074 (airhorn I will share that with visitors to the page. Let us see if Jim meets his goal and makes his dream come true. And, the Quadrijet, first introduced on the 1966 OHC 6 flowed 750 cfm, vs 550cfm for the previous 4 barrell, the Carter AFB. Please copy/paste the following text to properly cite this HowStuffWorks.com article: the Auto Editors of Consumer Guide Front carburetor (S/T) 7013063 (airhorn casting It would be replaced by the four-barrel Rochester Quadrajet air-valve type carburetor. The seats are not easily tightened as most have a slot for a very wide tipped screwdriver across the top. Respect these carbs. I do recommend the use of Teflon Paste only on the threads of the brass fuel fittings. Cast Shiny Finish (also available in gold chromate) - Height (Front) 12.5 It would not be suitable for a "correct" car, but would work well on a driver. What was discovered is that under hard braking as would be experienced after a run at a dragstrip the oil would move forward and away from the pick-up, temporarily starving the lubrication system. I recommend using the older style timing chain cover, though. Hot street & off road, good low & midrange power, fair idle. I realize the throttle bore diameter is larger on the 66 center carb (1 11/16") than the 64-65 center (1 7/16') However, the venturi, which is the smallest diameter opening in each carb is actually larger in the earlier carb. However, one can identify what a carburetor is not by n the last year or so, I have been getting this question all too often. Composition floats can absorb fuel and become too heavy. However, to convert to, essentially, 6 barrel numbers, you need to divide the two barrel flow numbers by ?. At that time, I had a float stick. Holding true to its stated production schedule, Butch's Grand Prix was built at the Pontiac, Michigan, assembly plant during the first week of March 1969, and was delivered to McKenzie Pontiac in mid-March of that year. Also, do not assume your 65 motor has a 65 timing chain cover. Starting in 1959, the end carbs used were the larger based units, while the center carb remained small. Your motor will live longer and have great throttle response if you keep it mild instead of extreme. FACTI don't know where this started, but you hear it often repeated at car shows and swap meets. UCC Truck Show 2023: Maximum Performance Under Big-Time Pressure. See pic. The '64 intake is very much like the '61-'63 and will bolt onto the '61-'64 heads. Would they recognize an incorrect lever or rod? My tripower leaks fuel out of the throttleshafts. throttle body casting 31892). The 428 has remained one of the favorite Pontiac engines for racers and hot rodders and, are always one of the most sought after for a build up. The standard engine, with a single four-barrel carburetor, was rated at 338 hp. A contemporary Pontiac 400 V-8 Ram Air III in the GTO was rated at 366 hp in 1969, and the elusive Ram Air IV was rated at 370 hp. The tripower on that car was trouble free until 2004. casting 7013206, bowl casting 7029683, throttle body casting 15211), Front carburetor (A/T, S/T 421) 7024078 (airhorn The covers are interchangeable. Policies designed to limit horsepower on production cars were prevalent during the GTOs era. See my answer to the next question for more information. The 65/66 intake will not cover this port. Trucks Invade the 2023 HOT ROD Power TourMega Gallery! 7013206, bowl casting 7029683, throttle body casting 15211), Front carburetor (S/T 421) 7025078 (airhorn casting 10) I need a 1964 trpower front carb # 7024178 for my 64 GTO with automatic transmission. bowl casting 7016085), Rear carburetor (A/T, S/T) 7013065 (airhorn casting engines. 2G was the standard model, while the 2GC and 2GV were designed with an automatic choke. However, they have been discontinued by all suppliers as far as I know. casting 7013206, bowl casting 7011997, throttle body casting 15211), Center carburetor (A/T 421) 7023162 (airhorn The first 428 was rated at 375. I discovered that this new Ethanol fuel has a 20 degree lower boiling point than gasoline of the past I believe that heat from the exhaust crossover is boiling the fuel out of the center carb. number; then the carburetor is mistagged. To those causes, a set of ported Edelbrock heads greatly increased flow and saved more than 50 pounds off the front end. 2015 Hyundai Santa Fe. From its inception in 1964, it became legendary within the muscle car domain and beyond. Other times, it drips off the end of the throttleshaft. Every engine suffers from three areas of loss. The increased suction would actually increase the flow through each venturi. casting 7013206, bowl casting 7011997, throttle body casting 15211), Center carburetor (4-speed A/T 389) 7023077 The '65s had increased in size and weight, but the 2+2's potent drivetrain nevertheless provided terrific performance. Published Aug 3, 2020 The triple carburetor engine pioneered a unique design and sparked the origins of "Tri-Power". class="wp-image-18426" />. 7012710, bowl casting 7013679, throttle body casting 3530), Center carburetor (S/T) 7015068 (airhorn casting 1963-'66 Pontiac 421 V8 1967-'69 Pontiac 428 V8. Fred Bitner awaits their OK to take the controls of the dyno. The Q-Jet had was dialed in on the car. "Our" foot gave 0-60 in eight seconds flat. With the engine nearly ready for its break-in, Mark Bitner, Jim Taylor, and Mark Erney give everything a look over one last time." I've got an original motor manual from GM--no mention of calibration. This manifold has By 1964, a new age of high performance had dawned in America, marked not so much by a horsepower race as by a sophisticated balance between power, handling, and efficient design. The D-port heads were redesigned with larger valves and better ports, complemented by a four-barrel intake manifold that was actually a street version of the Super-Duty NASCAR intake.

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