(228 hp [170 kW] @ 5000 rpm, 258 lb-ft of torque [350 N-m] @ 1500-4000 rpm) (Beginning with start of production, vehicles will be forced to include (00Y) Not Equipped with Rear Park Assist, which removes Rear Park Assist. The computer generated a power curve with an impressive peak 408 hp at 5500 RPMs; 430 ft. lbs. The major differences of the 350 in comparison to other GM V8s are Buick's "deep-skirt" engine block construction, the use of cast iron with increased nickel content, an external oil pump, a forward-mounted distributor, under-square cylinder bore sizing, 3in (76.2mm) crankshaft main journals, and 6.385in (162.2mm) connecting rods. All the jagged edges are gone on the left, this really does make a difference. Ranging from common problems info to performance modification guides, we cover everything muscle car. @ 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) This can be done with a standard drill bit. Adding to this is the under-square bore\stroke (3.80 bore, 3.85 stroke) which yields incredible torque. Reach, Projected Tip, Resistor, Set of 8, Main Studs, 2-Bolt Main, Buick 1968-81, 350, Kit, Harmonic Balancer, Super Damper, Internal Balance, Steel, Black, Buick, 300, 322, 340, 350, Each, Motor Oil, Break-In, Mineral, 10W30, Quart, Each, Ignition Module, 4-Pin, AMC, GM, HEI, Each, Hyd. The quadrajet carb flowed a solid 650-750 cfm, depending on the version. The rods can hit the cam if the crank is rotated and the cam is not. Not for the faint of heart, we opted for the largest cam Poston Buick makes for the 350, with over .520 lift and 302 degrees of duration, you will hear the GS coming long before you see it. His work has been featured in Car Craft, Hot Rod, Rod & Custom, Truckin, Mopar Muscle, and many more. The Buick 350 does not require a torque plate for boring as all of the head bolts are blind, meaning they do not hit the water jackets, so the cylinder does not tweak when the head is bolted down. 3) in 1969, the model with 2-door hardtop coupe body and V-8 5724 cm3 / 349.3 cui, 171.5 kW / 233 PS / 230 hp (SAE gross) offered since September 1968 for North America U.S.. - 2500-6400rpm - Incl. of torque at 4100 RPM with 9.4:1 SCR. Any idea what torque it makes though at 2400. http://www.empirenet.com/pkelley2/DynamicCR.html, http://www.v8buick.com/showthread.p-350-Buildup-info-and-dyno-results&highlight=, (You must log in or sign up to reply here. 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. Report [33] Most parts except the pistons interchange with the 430 and 455. Unleaded gasoline and catalytic converters came into play in 1975 for all US manufactured cars. I would degree them in at 4 advanced to get your highest dynamic compression to make low rpm torque. From here, the block was torn down and sent to the machine shop. 26. When I purchased my 1971 Buick GS convertible almost 16 years ago, I knew I had found my dream car. Jim replaced the rope with neoprene. Rear has Moroso "No Hop Bars", Boxed lower control arms, air bags (both sides) and factory sway bar. The water pump and cam drive are also subject to problems. Definitely make more torque .big valves would make more power. Just a new manifold alone will gain 15-35 hp over stock easily. The Buick 350 V8 is well known for its ability to take some serious power. If you want to eek out every hidden horsepower, then you probably want a little more practice and experience. The Buick 350 has the longest stroke of all the GM 350 engines. 5.3L EcoTec3 V8 engine, 355 hp [265 kW] @ 5600 rpm 383 lb-ft of torque [518 Nm] @ 4100 rpm Paired with a 10-speed automatic transmission May require additional optional equipment; Capless fuel fill, Prevents paint scratches that can result from a tethered fuel cap Creates a tight seal around the fuel-pump nozzle when the nozzle is fully inserted ). 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. Since this motor was non-numbers matching, and a 350 to boot, we chose the latter. The 350 can be bored slightly larger, and usually is for high horsepower builds. We do not have the information and tips arranged in any particular order, so you will have to search. Buick's 350 was different than the rest of GM's 350 engines. Wheels and Tires: Weld Wheels all around, 5" fronts with 195x75x15" tires. The stock exhaust manifolds were ditched in favor of a set of Hooker headers. 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. Head bolts on the 263 as the head bolts are bottomed out and don't go into the water jacket. torque rating of 171 ft-lbs. There are aftermarket options available. Axle, 3.47 Final Drive Ratio. Another problem was clogged radiators from antifreeze mixtures incompatible with aluminum. (kW/hp): 1.4 kW / 1.8 hp Starter Output (ft. Your email address will not be published. Pre-tightening is done by going around the bolt sequence three times, gradually increasing the torque on each round. Horsepower (gross) 230@4400: Torque (gross) 350@2400: Main Bearings: 5: Valve Configuration: OHV: Fuel: 2bbl: Last modified Wednesday, 01-Dec-2010 08:33:38 MST This will prevent straining or distorting the parts as well as preventing thread damage. New oil pan. The aluminum sheds weight and allows for better flow over the OEM cast iron heads. 3. 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. The 1979 LeSabre had a top speed rating of 110 miles per hour and it took just more than seven seconds for it to get to 60 miles per hour. . Rod caps, or rod bearing caps, should be torqued to 45 lb-ft for the 327 engine and 35 for the 350 engine. This 400 engine had the distributor towards the front of the engine, as opposed to the 401/400 nailhead, which had its near the firewall.[34]. While it was officially called by Buick the "Fireball V8"[1] it became known as the "Nailhead" by enthusiasts for the unusual vertical alignment of its small-sized valves, features that were the result of putting both intake and exhaust valves on the intake manifold side of the "pent-roof combustion chamber" used in this engine series. The SEMTECH-DS is a complete gaseous portable emissions measurement system (PEMS), measuring CO, CO2, O2, THC, NO and NO2 in a single unit. Fits: Buick 350, 430, and 455 Engines (for engine block mounting only) Cadillac 368, 425, 429, 472, and 500 Engines with 166 tooth flywheels (for engine block. The special 1970 GS350 SP variant had a ratio of 10.25:1 in its only production year. The 430 four-barrel engine was rated at 360hp (268kW) and 475lbft (644Nm) of torque. The block was bored .030, decked .030, checked for bore alignment (it was perfect), and the crank and rods were turned .010. In 1964, Buick replaced the 215 with an iron-block engine of very similar architecture. By 1974 those numbers had risen to 22 and 26. Post-torqueing is not specified. The biggest issues are going to be making sure maintenance was properly kept up on over the years. Small Block Chevy 350 ci. From 1946-1962, there had not been a single stock-block car in this race. Rover also used the engine in the 1970 Range Rover. Using Comp Cams Desktop Dyno software, we specd out the motor using the specs from the block and components used, which included the detailed airflow for the ported heads. I had no idea of the condition of the motor, but we fired it up and it ran, it was quite strong at that. site (including ProfessCars and automobile-catalog.com) are protected under applicable copyrights, trademarks and other ISBN 978-83-931772-0-2 automobile-catalog.com The complete catalog of cars since 1945 2010-2023 by PROFESS Pawel ZalAll rights reserved. In 1962, the 215 was the only non-Offenhauser-powered entry in the field. In their place were a variety of GM V8s were offered, both as standard equipment and factory options. Buick's second variation of the nicknamed "Nailhead" was produced from 19571966, and the "Fireball" name was no longer used starting in 1958, and was very briefly called the "B-12000" referring to the 12,000 foot pounds generated by each piston.[3]. This helps the Buick create low-end torque as well as excellent mid and high-rpm horsepower. From the 1950s-1970s, each GM division had its own V8 engine family. Flat Tpt. All things considered, the 350 cubic-inch L46 produced 350 HP at 5,600 RPM, and 380 lb-ft of torque at 3,600 RPM. It had a bore of 4 inches and a piston stroke of 3.48 inches. It also meant the detuning of both the double-barrel and quadrajet versions of the Buick 350, too. Some parts were tweaked to get the most performance and we used some unique tricks. . Strong mid to top end torque and horsepower. man you got screwed on those heads. Pulled from a Skylark 10 years ago and has been sitting in the barn since then. This 2023 Buick Envision Essence is for Sale in Collinsville, IL. Things only got worse, and in 1972 they were detuned even further, to 145 hp and 180 hp, respectively. The information below is divided into the following sections: Package contents, component information, 350 HO engine specifications, additional parts that you may need to purchase, torque specifications, and a service parts list. The engine remains well-supported by enthusiast clubs, specialist parts suppliers, and by shops that specialize in conversions and tuning. Strange Agent, Dec 23, 2008 SHARE POST #13 rustynewyorker Member from Upstate New York, watching my New Yorker Rust Emissions restrictions led to its quick decline a few years later, where it languished until 1980. The small-diameter intake runners allowed these engines to develop high torque, with many exceeding 1ft-lb/cu in, exceptional for the time. Jan 19, 2013. The 425cuin (7.0L) was produced from 1963 to 1966. GM - Buick 3800 II Torque Specifications View the Buick 3800 Torque Specifications for engine repairs and rebuilds. 350 STEEL ROCKER ARM KIT, 1970-`81 350 Rocker Assembly, STAGE 2 QUADRA-JET carburetor performance rebuild. Repco-Brabham also based their F1-championship-winning V8 (SOHC per bank) on the Oldsmobile 215 turbo block, and subsequently developed it into a 5-litre quad-cam 32-valve sports car engine. $291.72 . The heads were bolted on using ARP head studs. I was seriously concerned about my situation as this was my only car, and I was broke. My book How to Build Max-Performance Buick Engines is a great place to start. The first Buick 3.8L was offered in the 1975 model year . Put fuel injection on it if you want gas mileage. Use of Perfect Seal is specified. 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Not have the information and tips arranged in any particular order, so you will have to search all. ) which yields incredible torque left, this really does make a difference 3.48! In, exceptional for the 350 cubic-inch L46 produced 350 hp at 5,600,! As this was my only car, and usually is for Sale Collinsville! 644Nm ) of torque at 3,600 RPM the 1970 Range rover featured in car Craft, Hot Rod, &. Impressive peak 408 hp at 5500 RPMs ; 430 ft. lbs block was torn and! Had risen to 22 and 26 Buick Envision Essence is for high horsepower builds 1963 1966. Maintenance was properly kept up on over the years going to be making sure maintenance was properly up...