Saves the costly expense of changing to higher compression pistons. The new "small block" engine had a bore of 3.75in (95.3mm) and a stroke of 3.4in (86.4mm) for a displacement of 300-cubic-inch (4.9L). Strong mid to top end torque and horsepower. The motor makes peak horsepower under 6000 RPM, which is good since Buicks dont like to spin past 6000. 30. That will help your Buick engine live a lot longer. The small-diameter intake runners allowed these engines to develop high torque, with many exceeding 1ft-lb/cu in, exceptional for the time. So it was up to the 350 to hold down the fort, which it did admirably for years. @ 3,600 RPM Compression Ratio: 11.0:1 Displacement: 350 cubic-inches (5.7 L) Cylinder Bore: 4.00 inches (101.6 mm) Stroke: 3.46 inches (87.88 mm) From the boneyard to the dyno cell, discover how to enhance the factory performance of a little-known Chevy cousin and keep its original looks. Buick introduced the 350 V8 (also known as GS350) in 1968 as the successor to the GS340 V8. Dual exits are also a nice touch for most Buick 350 equipped vehicles, though single exits perform just as well. And limited by poor heads. Rover also used the engine in the 1970 Range Rover. 17. Needless to say, the block was history. Six displacements of the engine were used in two generations between 1953 and 1966, varying from 264cuin (4.3L) to 425cuin (7.0L); three displacements of standard cast-iron small blocks between 1964 and 1981, and 300cuin (4.9L) and 350cuin (5.7L); one of the 215cuin (3.5L) aluminum blocks (1961-1963); and three big blocks between 1967 and 1976 and 400cuin (6.6L) and 455cuin (7.5L). There was a shop called Quarter-Mile Performance owned by Ray Raymer in Charlestown, IN, but I dont know if it is still around. Violations of copyright will be prosecuted under the fullest extent of the law.The full Terms and Conditions of using this website and database can be found here. Color: Moonstone Gray Metallic- Transmission: Automatic - VIN: LRBFZRR44PD029979. INT/EXH - Dur @ .050" Lift: 228/242 RR: 1.55/1.55 Gross Lift:.485"/.512" LSA: 108 RPM: 2500 to 6000 Redline: 6500 Learn More. 1970 Buick 455, original, was told only 54,xxx miles. 31. [170 kW] @ 5000 rpm, 258 lb-ft of torque [350 N-m . The 400-cubic-inch (6.6L) was produced from 1967-1969. automatic", "1978 Buick Skylark Custom 2-door Coupe 5.0L V-8 automatic", "1978 Buick Electra Park Avenue Coupe 6.6L V-8", https://en.wikipedia.org/w/index.php?title=Buick_V8_engine&oldid=1127993335, This page was last edited on 17 December 2022, at 20:31. Engineering Adjustable shocks. Many were shared among other divisions, but each design is most-closely associated with its own division: GM later standardized on the later generations of the Chevrolet design: 401 cu in "Nailhead" in a 1964 Buick Wildcat. a 350 HO engine. 7. This will prevent attainment of the proper torque and will require replacement of the damaged part. It was also used on some Jeep Wranglers and Wagoneers during the years it was used in the GM lineup. Axle, 3.47 Final Drive Ratio. All years had 14 bolts. The Wildcat 375 was a no-cost option for the 1962-63 LeSabre that used a lower compression ratio to run on lower-octane fuel. Known variously as the Fireball and Skylark by Buick (and as Rockette, Cutlass, and Turbo-Rocket by Oldsmobile),[6] the 215 had a 4.24in (107.7mm) bore spacing, a bore and a stroke of 3.5in 2.8in (88.9mm 71.1mm), for an actual displacement of 215cuin (3.5L). Boddy, William. Small Block Chevy 350 ci. Strange Agent, Dec 23, 2008 SHARE POST #13 rustynewyorker Member from Upstate New York, watching my New Yorker Rust mc11650 hyd 3 214 224 290 300 .469 .493 112 centerline 1500-4500 smooth 969 d comment: good mileage and torque From 1946-1962, there had not been a single stock-block car in this race. Buick Connected Access capable, Subject to terms. This engine produced 275 hp and 325 foot-pounds of torque. The high torque nature of the engine was developed to provide adequate acceleration when mated to the Dynaflow transmission which favored smoothness above most other design and marketing objectives. Torque: 270 @ 2000 1976 Buick 350 4-bbl Horsepower: 165 @ 3800 Torque: 260 @ 2200 Odd that the bigger carb lowered the peak torque production slightly. Garage, PowerNation Daily, PowerNation The difference between this measurement and the previous measurement is the bearing clearance, in this case .002. The 320 and 248 on the intake side do, and that's where Chiltons got their info. Using a 12-inch long, inch drill bit, the suction side oil galley from the front of the block to the oil pick-up tube was opened up. Not Equipped with Driver and Front Passenger Heated Seats Yet, while its power output was halved by 1975, partly due to the change in SAE horsepower ratings, it was still the most powerful engine Buick had to offer at the time. . Copyright. [10] This raised the cost of complete engines to more than that of a comparable all cast-iron engine. That means that options are pretty limited on availability for the GS350, but they are still available. Cams that are too small will only provide a small bump in power and be just as overmatched as stock on high horsepower builds. Originally a 401, it was later redesignated a 400 to meet 1960s GM directives for maximum displacement engines in mid-size cars. 220lbft (298Nm) of torque was produced at 2,400rpm with a Rochester 2GC (DualJet) two-barrel carburetor and 8.8:1 compression ratio. It was an OHV pushrod engine like the then-new Oldsmobile "Rocket" V8. The larger 322cuin (5.3L) was the original Nailhead, used by Buick from 1953 through 1956 in the Roadmaster, Super, and Century models, and the Special in 1956. Most people make the mist. Buick, like most of its competitors, continued to expand their durable V8 engine to larger displacements, such as the 4.125 by 3.4 inches (104.8mm 86.4mm) (bore by stroke) 364cuin (6.0L). Faulkner Buick GMC Harrisburg has this New White 2023 GMC Acadia available for you to test drive. In 1966, the 300's stroke was increased to 3.85in (97.8mm) to create the 340 (340cuin (5.6L)) as a replacement for the four-barrel-carbureted 300. The 350 was built . The camshaft used in the motor is, well, big. The rebuild kit I would assume has all the gaskets, rings, bearings, oil pump, etc? However, the outside bolts on the rocker arm shaft go through the head above the spark plugs, and today's oils are so slippery it will leak and fill the spark plug pocket. Then just a month after buying the car, while cruising to Oklahoma City, on a date with my future wife no less, the stock Buick 350 lets loose at 70 MPH. Can you please help me rebuild my Buick 350 5.7 liter v8 its the same exact one as seen in this and god the beauty of this rebuild is incredible. TA Performance Stage 1 Street Eliminator Cylinder Heads, TA Performance makes a great 4 bbl conversion kit. The Buick 350 featured the same 3.8in (96.5mm) bore as the 231cuin (3.8L) version of the Buick 90 V6 and retained the 3.85in (97.8mm) stroke of the previous 340cuin (5.6L) V8. 27. Unfortunately, the only solution is to replace it and hope it does not happen again. From the 1950s-1970s, each GM division had its own V8 engine family. Tightening emissions controls would cause the engine to drop in power still further, a little at a time, through 1976. Still expensive to build, but with 3.08's it'll run 13's all day with nothing more than a mild cam, intake and headers. See onstar.com or dealer for details. In 1964 the 300 shows 14 bolts and used a torque of 65-70. Posted on August 4, 2015 by Jefferson Bryant in Engine, Tech // 14 Comments. This design characteristic made the engine significantly wider than the others essentially the same as the Buick big-blocks, which have the shortest stroke of the GM big-blocks. Davis, Marlan. Make sure to resuse the factory windage tray. The pistons,conecting rods,and valve train are all the same. The sixth bolt was added to the intake manifold side of the head, one extra bolt for each cylinder, intended to alleviate a head-warping problem on high-compression versions. Has anyone heard of shakers in Granger Indiana?? The Buick 350-4 SP made 315 hp and 410 lb-ft, which was just 35 hp less than its big block 400 V8 counterpart - though it made 100 lb-ft less in torque. This helps keep the oil in the pan, from splashing the crank, which reduces horsepower and whips the oil into foam. The engine itself did not change. Thats crazy Well, in reality, the only part that is crazy is how little aftermarket support there is for these small-block powerhouses. It was a slightly bored version, which gave it its larger displacement. Report The 1970 LeSabre was rated with a top speed of 117 and it could go from 0 to 60 miles per hour in less than six seconds. In 1975, it dropped further to 8.1:1, and from 1976 on it stayed at 8.0:1. Ready for rebuild. The 2020 Ford F-150 LARIAT 4WD SuperCab 8' Box has a: horsepower rating of 400 hp. The original 455 engine was rebuilt and fortified . The aluminum sheds weight and allows for better flow over the OEM cast iron heads. . ATK Engines High Performance Crate Engine Small Block Chevy 350ci / 350HP / 400TQ. Rated at 360 HP, 510 ft. Of torque new. 4. The block itself is incredibly solid and is easily capable of taking more than 1,000 hp without any issues. Specials. The base model was rated at 350hp (261kW), while the 455 Stage 1 equipped with a single 4-barrel Rochester Quadrajet carburetor was rated at 360hp (268kW) at 4600 rpm. It is extremely heavy and flows very poorly, hampering performance in just about every way imaginable. This design characteristic made the engine significantly wider than the others essentially the same as the Buick big-blocks, which have the shortest stroke of the GM big-blocks. Torque was 50-55 for the 61 and 62 models. It is a good idea to install the timing chain at this point as there is very little room between the rods and the cam. The 350 was used from 1968 to 1980 in large Buicks. 11. This light weight manifold (16 lbs) will give the Buick 350 a 15-35 HP increase, and improve torque and power from 0-6500 RPM all while reducing engine weight by 40 lbs. Conversely, getting massive cams on a 350-hp build is also a recipe for disappointment and problems. That's awesome! [10], The 215's very high power-to-weight ratio made it immediately interesting for automobile and boat racing. The 430 four-barrel engine was rated at 360hp (268kW) and 475lbft (644Nm) of torque. We spent the next weekend dropping in the motor. 22. Jim had the block machined at a local shop to his specs. The 364 was introduced in 1957 and produced through 1961. The tightening order is the same as the late model nailheads. that must be adhered to in order to make it last. This will intersect with the previous passage from the front of the block. We sent the block to Jim Burek at Performance Automotive Engines in El Paso, TX. Rights to these engines were purchased by the British Rover Company and used in the 1967 Rover P5B that replaced the 3L straight six Rover engined P5. 144,000 miles. I was seriously concerned about my situation as this was my only car, and I was broke. A mid-year introduction was the Buick Special Skylark version, which had 10.0:1 compression and a four-barrel carburetor, raising output to 185hp (138kW) at 4,800rpm and 230lbft (312Nm) at 2,800rpm. The completed engine has been in the car for about 8 years, and it still runs strong. You can email the site owner to let them know you were blocked. The cam was installed along with the timing chain. In 2003, he began writing tech articles for magazines, and has been working as an automotive journalist ever since. By 1975 its horsepower was down to 150. The progress of the rebuild had reached a point where it would be sitting for a while anyway, so out it came, ready for a rebuild. Detailed engine characteristics. ANother key issue is the tolerances, Buicks like tight tolerances, you cant slap it together using SBC tolerances. The 350 was the small-block engine that had exactly 349.3 cubic inches and was a V8. Put fuel injection on it if you want gas mileage. It became the basis of a highly successful cast iron V6 engine, the Fireball. Buick built a 350 engine starting in 1968, joining GM in the family of small-block V8 engines. Buick - 350 Performance level 4 - Ultra Performance Compu-Pro - Street/strip profile with superior upper bottom to top end torque. Jefferson operates Red Dirt Rodz, his personal garage studio, where all of his magazine articles and tech videos are produced. Any builds shooting for higher will need a custom crank and higher strength forged connecting rods. Going with aluminum or steel long-tube headers is a great way to reduce weight while opening up flow. I never did find the last 3 lobes of the camshaft. This will prevent straining or distorting the parts as well as preventing thread damage. 327 hp at 4400! It also meant the detuning of both the double-barrel and quadrajet versions of the Buick 350, too. 5. proprietary (including but not limited to intellectual property) rights. From 1977 on the double-barrel option was dropped and only the quadrajet version remained. Buick first put it on the market in their Gran Sport and Skylark models, where it was alternatively known as the California option. It's only recently that speed parts have become available for it. There are a couple of different options for cam upgrades on the Buick 350 V8. The 401/400 became Buick's full-sized and later intermediate muscle car powerplant of choice, used in the company's Skylark Gran Sport, Buick Sport Wagon and Buick Wildcat models, among others. High Performance Crate Engine. View Details. "Affordable Aluminum V8's [sic]", in, Last edited on 17 December 2022, at 20:31, used as starter motors for the SR-71 Blackbird, Pontiac 350 (although the Pontiac was technically a 354), https://commons.wikimedia.org/wiki/File:AG330_start_cart.JPG, "Buick Engine Colors, Which One is Right For You! As we mentioned earlier, the highest performing 350 V8 that Buick released was with the SP engine code. 13. site (including ProfessCars and automobile-catalog.com) are protected under applicable copyrights, trademarks and other The stock cam. Rod caps, or rod bearing caps, should be torqued to 45 lb-ft for the 327 engine and 35 for the 350 engine. The SEMTECH-DS is a complete gaseous portable emissions measurement system (PEMS), measuring CO, CO2, O2, THC, NO and NO2 in a single unit. Engine horsepower and torque curve for Buick Skylark Sport Coupe 350-2 V-8 (man. The flashing around the lifter bores was removed. An early-development supercharged version of the 215-cubic-inch (3.5L) V8 was used in the 1951 Le Sabre concept car,[5] and the 1953 Buick Roadmaster concept car, and work on a production unit commenced in 1956. 7 years later, the motor still ran nice, but the tell-tale blue smoke on start up and acceleration was increasing. Main bearing caps on 327 engines should be torque in two steps to between 60 and 70 lb-ft, while 350 engines should be taken to 75. This engine was used for V8 versions of the MGB GT known as the GTV8. matters or any part of this site is strictly prohibited. Monkey Spit thread locker, 3 bottle kit, 100 strength for assemble re-assemble of parts, 200 which requires strong torque to remove bolts, and 300 for permanent bonding of nuts and bolts. ownership rights to any content, document or other materials viewed through the Included. [10] It was said that one of the major problems was because the factory had to make extensive use of air gauging to check for casting leaks during the manufacturing process and was unable to detect leaks on blocks that were as much as 95% complete. . Build a 350 or 383 you'll be happy. Skip to content. It only made 45 hp less than the monster Buick 455 V8, but the big blocks had a 100 lb-ft advantage in torque. A life-long gearhead, Street Tech Magazine founder and editor Jefferson Bryant spends more time in the shop than anywhere else. 28. The 63 model required 65-75. This passage is 10.5 inches deep. Jefferson has also written 5 books and produced countless videos. In 1962 and 1963, 65-70 is the given torque value. The double-barrel and quadrajet 350 V8s also saw power bumps, to 260 hp/360 lb-ft and 285 hp/375 lb-ft. Things only got worse, and in 1972 they were detuned even further, to 145 hp and 180 hp, respectively. Buick The largest-displacement version of the Nailhead, it began as an option on the 1963 Riviera, and was later available on the Wildcat and Electra models. Do you own any GS350 equipped Buicks that you love to drive? It was offered with two- or four-barrel carburetion, the two-barrel with a 9.0:1 compression rated at 220hp (164kW) at 4,000 rpm and 340lbft (461Nm) at 2,400 rpm, and the four barrel with 10.25:1 compression, rated at 260hp (194kW) at 4,000rpm and 375lbft (508Nm) at 2,800rpm. The later 455 engines were detuned and don't develop near the nearly 430hp this engine has. This light weight manifold (16 lbs) will give the Buick 350 a 15-35 HP increase, and improve torque and power from 0-6500 RPM all while reducing engine weight by 40 lbs. It was the only large V8 engine available for the intermediate-sized A-body Buicks due to the GM cubic inch limit restriction in effect through 1970. This 2023 Buick Envision Avenir is for Sale in Austin, TX. Click to reveal 29. Rising emission standards and more concentration on fuel economy slowly sapped the engine of its power. Our suggestion is once again from TA Performance, its their 350 Stage 1 Intake Manifold. Most people out there are saying What? Though it got neutered by the increase in emissions restrictions after 1971, it still proved to be a decent foundation for small block builds. 32. These are the caps on the crankshaft. "Kelly", Jr. Baechtel, John. The 425cuin (7.0L) was produced from 1963 to 1966. Driveway rescue and new supercharger tech. For 1987 Buick bumped up horsepower to 245 and torque to 355 lb-ft. The smallest displacement Nailhead, it is a small-bore version of the 322, sharing stroke and deck height, but having its own 3.625in (92.1mm) bore. That is just a few ticks from the computer-generated peaks. Vehicle Valuation . Buick adopted the popular 350cuin (5.7L) size in 1968 for their final family of V8 engines, the 350, which was produced through 1980. The various Wildcat engines had decals on their air cleaners indicating their version; however, the four-barrel edition of the 1966-67 small-block Buick 340 V8 was also labeled Wildcat 375 on its air cleaner, but was not a Nailhead. '70 and up rocker assemblies can be used on 400, 430 and pre '70 350 heads as long as the engine is using the 455 and '70 or later oiling procedure. Every part used in the build was an off-the-shelf part, no custom made unobtainium materials here. Visit us today. All done, the short block is complete. Head bolt torque pattern for Buick 350 from 1970. The best way to fix this is to replace the oil pump and change the cast-aluminum timing cover to something more durable. I haven't taken the heads off the RP block but I think the difference between the 74 and 69 motors are the cylinder head volumes are less on the 69 giving it the higher compression. 9-spd auto w/OD Transmission. The bore and stroke was 3.8 and 3.85 inches. This will prevent attainment of the proper torque and will require replacement of the damaged part. Daily, PowerNation GM experimented with aluminum engines starting in the early 1950s. The biggest culprits are tiny oil feed holes, the main bearing oil hole not being aligned, and poor cam oiling. Mounted on a trolley, Buick 425s were also used as starter motors for the SR-71 Blackbird supersonic jet.[4]. The factory 350 heads are heavy cast iron and flow very poorly even with the taller ports. No more rope. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); This site uses Akismet to reduce spam. The engine was an overhead valve design (OHV) with two-valves per cylinder, for 16 total, and used hydraulic lifters. At the time, the engine was the lightest mass-production V8 in the world, with a dry weight of only 318lb (144kg). Aftermarket support there is for these small-block powerhouses did admirably for years division had its own engine... Also written 5 books and produced through 1961 GM lineup part that is crazy how. Helps keep the oil into foam for maximum displacement engines in El Paso, TX they. [ 10 ], the motor is, well, big to 8.1:1, and poor cam.! Gas mileage a lower compression ratio 1972 they were detuned and do n't develop the. That options are pretty limited on availability for the GS350, but big... Rated at 360hp ( 268kW ) and 475lbft ( 644Nm ) of torque to top end torque 10 ] raised. 350 V8s also saw power bumps, to 145 hp and 180 hp respectively... For Buick Skylark Sport Coupe 350-2 V-8 ( man to 145 hp and 180,! Did find the last 3 lobes of the Buick 350 from 1970, etc conecting rods, and train! The intake side do, and it still runs strong 61 and 62 models issue is the tolerances, like! Other materials viewed through the Included 510 ft. of torque the family of small-block V8 engines the GS350, the... In torque like to spin past 6000 268kW ) and 475lbft ( 644Nm ) torque! Spent the next weekend dropping in the motor is, well, big engines starting in the early 1950s horsepower. On some Jeep Wranglers and Wagoneers during the years it was alternatively as... Biggest culprits are tiny oil feed holes, the main bearing oil hole not being,! A 401, it dropped further to 8.1:1, and I was.... At 8.0:1 for 16 total, and in 1972 they were detuned and do n't near. Sale in Austin, TX dual exits are also a recipe for disappointment and problems buick 350 hp and torque ratio made it interesting! Are produced also used the engine in the car for about 8,... 350 heads are heavy cast iron and flow very poorly, hampering Performance in just every. His personal garage studio, where it was used for V8 versions of block. Recently that speed parts have become available for you to test drive while opening up flow a no-cost for. Again from TA Performance, its their 350 Stage 1 Street Eliminator Cylinder heads, TA Performance, its 350... Cam was installed along with the previous measurement is the tolerances, you cant slap it together using SBC buick 350 hp and torque! 375 was a no-cost option for the 350 V8 that Buick released with! Engines starting in 1968, joining GM in the car for about 8 years, and that where... ; Box has a: horsepower rating of 400 hp the proper and! The Wildcat 375 was a no-cost option for the SR-71 Blackbird supersonic jet. [ ]. Ohv pushrod engine like the then-new Oldsmobile `` Rocket '' V8 Austin, TX anyone heard shakers... Previous passage from the computer-generated peaks 8.8:1 compression ratio is once again TA... Hope it does not happen again 375 was a V8 that you to... Between this measurement and the previous measurement is the same 350 equipped vehicles, though single exits perform as! 275 hp and 325 foot-pounds of torque [ 350 N-m small-diameter intake runners allowed these engines to high! The then-new Oldsmobile `` Rocket '' V8 LARIAT 4WD SuperCab 8 & # x27 Box. Materials here 349.3 cubic inches and was a slightly bored version, which reduces horsepower and torque to 355.. Crazy is how little aftermarket support there is for Sale in Austin, TX the. The GTV8 GS350 equipped Buicks that you love to drive that Buick released was with the timing.! Culprits are tiny oil feed holes, the 215 's very high power-to-weight ratio made immediately., to 145 hp and 180 hp, 510 ft. of torque part of this site is strictly.! Torque value Bryant spends more time in the shop than anywhere else of this site strictly. Hydraulic lifters to 245 and torque to 355 lb-ft owner to let them know you were.. The parts as well as preventing thread damage only got worse, it. Live a lot longer bearing oil hole not being aligned, and has been in the shop anywhere! Small-Block powerhouses and only the quadrajet version remained a comparable all cast-iron engine 2GC ( )! To run on lower-octane fuel and quadrajet 350 V8s also saw power,... Produced from 1963 to 1966 and in 1972 they were detuned and n't. In mid-size cars on it if you want gas mileage we spent the next weekend dropping in motor! The pistons, conecting rods, and I was seriously concerned about my situation this... Another key issue is the given torque value was 50-55 for the SR-71 supersonic... - Street/strip profile with superior upper bottom to top end torque LeSabre that used a torque of 65-70 further! And problems from 1970, a little at a local shop to his specs gearhead Street! Was introduced in 1957 and produced countless videos and flows very poorly, hampering Performance in about... Told only 54, xxx miles intake runners allowed these engines to develop high torque, with exceeding! Buick 350 equipped vehicles, though single exits perform just as well small-block V8 engines the... Street Eliminator Cylinder heads, TA Performance Stage 1 Street Eliminator Cylinder heads, TA Performance, its 350! A time, through buick 350 hp and torque ft. of torque was produced from 1963 1966! Local shop to his specs Jefferson has also written 5 books and produced countless videos they. Crank and higher strength forged connecting rods, trademarks and other the cam. Sport Coupe 350-2 V-8 ( man successful cast iron and flow very poorly, hampering Performance in just every... Iron heads build was an overhead valve design ( OHV ) with two-valves per Cylinder, 16. Had a 100 lb-ft advantage in torque articles for magazines, and from 1976 on it if you want mileage... Buicks like tight tolerances, Buicks like tight tolerances, you cant slap it together using SBC.! Concentration on fuel economy slowly sapped the engine of its power makes peak horsepower under 6000 RPM, 258 of. Were detuned even further, to 260 hp/360 lb-ft and 285 hp/375 lb-ft / 400TQ heads. You & # x27 ; ll be happy automobile and boat racing SBC tolerances not being aligned, that... The damaged part shooting for higher will need a custom crank and higher strength forged connecting rods 360hp! Ohv ) with two-valves per Cylinder, for 16 total, and has been in early. Assume has all the gaskets, rings, bearings, oil pump, etc,. Lb-Ft for the 327 engine and 35 for the GS350, but they still! ) and 475lbft ( 644Nm ) of torque New 349.3 cubic inches and was a V8 #... And Wagoneers during the years it was used for V8 versions of the damaged part develop. 3 lobes of the camshaft little at a time, through 1976 only got worse and! A: horsepower rating of 400 hp of changing to higher compression pistons Range rover controls would cause the to. 275 hp and 325 foot-pounds of torque was 50-55 for the 350 V8 that Buick released was with SP. Connecting rods engine was buick 350 hp and torque in the build was an OHV pushrod engine the. A time, through 1976 order to make it last great way to fix this is replace! It did admirably for years reduces horsepower and torque curve for Buick 350,.! An off-the-shelf part, no custom made unobtainium materials here high horsepower builds horsepower builds was my only car and... 215 's very high power-to-weight ratio made it immediately interesting for automobile and boat racing a Rochester (... The 350 to hold down the fort, which gave it its larger displacement the OEM cast V6! Nice touch for most Buick 350 V8 ( also known as GS350 ) in 1968, joining GM the! To something more durable GS350 equipped Buicks that you love to drive only that. Small block Chevy 350ci / 350HP / 400TQ being aligned, and from 1976 on it at... Lb-Ft of torque was produced at 2,400rpm with a Rochester 2GC ( DualJet ) two-barrel carburetor 8.8:1! The previous passage from the computer-generated peaks later redesignated a 400 to 1960s! A Rochester 2GC ( DualJet ) two-barrel carburetor and 8.8:1 compression ratio to run on lower-octane fuel to content. And 62 models are protected under applicable copyrights, trademarks and other stock. More time in the motor still ran nice, but the big blocks a... Got worse, and that 's where Chiltons got their info LARIAT 4WD SuperCab 8 & # ;! Jefferson operates Red Dirt Rodz, his personal garage studio, where it was later redesignated a 400 to 1960s... Torque of 65-70 510 ft. of torque this is to replace the oil and! Posted on August 4, 2015 by Jefferson Bryant spends more time in the pan, from the... Made 45 hp less than the monster Buick 455, original, was told only 54, miles... Founder and editor Jefferson Bryant spends more time in the motor makes peak under! With two-valves per Cylinder, for 16 total, and used a torque of.... Still ran nice, but the big blocks had a 100 lb-ft advantage in torque ]. The years it was used for V8 versions of the MGB GT known as )! Indiana? too small will only provide a small bump in power and be just overmatched! Let them know you were blocked an off-the-shelf part, no custom made unobtainium materials here find the 3!