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 Not bad for an engine that has been all but forgotten. 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. Dual exits are also a nice touch for most Buick 350 equipped vehicles, though single exits perform just as well. A clearance of .004 to .005 is good. 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. In addition, its incredibly expensive to port the factory heads well enough for 400+hp builds. Pre-tightening is done by going around the bolt sequence three times, gradually increasing the torque on each round. 25. 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.. In the mid-1970s Buick's 400/430/455 big blocks became unable to meet fuel economy/emission requirements and were phased out, with the Buick 350 remaining as a factory option until 1980. Buick Connected Access capable, Subject to terms. See onstar.com or dealer for details. The tightening order is the same as the late model nailheads. It does a great job of improving power everywhere in the power band, and is built to fit with many different carburetors. Jan 19, 2013. 15-35 . Toggle navigation. The best option is to upgrade to aluminum ported cylinder heads. Just a new manifold alone will gain 15-35 hp over stock easily. At the time, the engine was the lightest mass-production V8 in the world, with a dry weight of only 318lb (144kg). do you know of anyone who has built a low rpm torque monster from a sbb 350 and has dyno tested it? ). Photo of the moment: 2020 Seat Leon 1.4 e-HYBRID (204) (Photo: Seat Motor (VAG)) Quick access to automobile-catalog website - type in a browser: a-c.li There is a huge amount of support for the 215, principally because of its lengthy use by Rover, spanning a period of 38 years (1967-2005). ALSO UNLIKE THE CHEVY, BUICK USED THE SHAFT MOUNTED ROCKER SETUP FOR ITS STAMPED STEEL ROCKER ARMS. For that reason, the more common Buick version (which looks like a traditional Nailhead V8) has emerged as more desirable to some. 3.8L V6 engine has had a production run lasting more than 30 years. The main oil feed holes on #2, #3, and #4 mains were opened up from the stock to 5/16. In 1965 the 300 shows 10 bolts and increases the torque to 70-75. This guide will look at everything surrounding the Buick 350 engine, from its history, to its reliability, performance, and potential upgrade paths. The rebuild kit I would assume has all the gaskets, rings, bearings, oil pump, etc? The head design for the Buick 350 was ahead of its time, using tall, skinny ports to generate higher port velocities while keeping the air flow up as well. Most people make the mist. I was finally able to go through all the shop manuals from 53 to 67. Rear has 8" rims with 27x11.5x15 Hoosiers Quick Time Pros. You must go all the way past the cam bearing to a depth of 3 inches. There was a Buick service letter put out many years later which raised the values on the earliest years of the 215. 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. The 430-cubic-inch (7.0L) was only produced from 1967 until 1969. Most parts except the pistons interchange with the 400 and 455. Our high performance cam designed for 1971 and up 350 engines with low compression ratios. It had the same 10.5:1 compression as its Chevy counterpart. Going with aluminum or steel long-tube headers is a great way to reduce weight while opening up flow. 16. Still, the Buick 455 is an exciting engine with a lot of history and performance potential. Reducing reversion also lowers EGTs, which can get pretty high on builds with higher compression pistons. The incorporation of material or any part of it in any other web-site, electronic retrieval system, publication or any other work (whether hard copy, electronic or otherwise), also the storage of any part of this site on optical, digital or/and electronic media is strictly prohibited. Yeah they make power (on the dyno)but its so high in the RPM range it really isn't all that fun. Build a 350 or 383 you'll be happy. 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. By the late-1970s, Buick eliminated the double-barrel version and only the quadrajet 350 V8 remained. By 1970, it challenged Buicks big block 400 and 455 V8s with its output of 315 hp and 410 lb-fit. (1) Estimated to ship direct from manufacturer on 05/29/23, pending manufacturer availability. a 350 HO engine. The long-lived rumors of bad oiling systems (unfortunately true, but easily rectified) and relative scarcity (built from 1968 to 1980) is harder to find than an SBC motor, dont let that stop you, though, as these motors have quite a bit going for them. That is just a few ticks from the computer-generated peaks. proprietary (including but not limited to intellectual property) rights. This step is not critical for basic builds, but should be done on any high-performance engine. In 1966 the head went to 8 bolts, the torque continued to be 70-75. $3,777.00. This passage is 10.5 inches deep. Make sure to resuse the factory windage tray. 1st row regular express open . If it were me, I'd shop around for a Buick 455. Modest streets cams will improve power by 10-25 hp, while high performance competition cams can net 60-75 hp on top of other mods. In 1965 The Torque was increased to 70-75. The car came standard with an automatic transmission, and a manual was available. Allowing for better flow reduces exhaust reversion and increases scavenging, which allows for cleaner and cooler air to enter in the combustion chamber. Displacements vary from 215cuin (3.5L) (for the division's unique all-aluminum early 1960s engine) to 455cuin (7.5L) for its last big block in 1976. Head bolt torque pattern for Buick 350 from 1970. Overall, its very reliable, well engineered, and at least from 1968-1970 produced solid performance straight from the factory. Needless to say, the block was history. The compression ratio on the GS350 from 1968-1970 was 9.0:1 for the double-barrel and 10.25:1 for the quadrajet. 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. translation, digital conversion and other matters related to the automobile-catalog.com HorsePower turns a Nissan 240 SX into a 240/LS. Jim replaced the rope with neoprene. Measuring main bearing bores with the caps torqued and bearing installed. The Buick 350 arrived on a pallet at PAE, sans heads, which had already been built. The following torques and torque patterns were compiled with the help of Todd. For 1987 Buick bumped up horsepower to 245 and torque to 355 lb-ft. The first Buick 3.8L was offered in the 1975 model year . The Buick 350 was, of course, a development of the 300, which was itself a bored-and-stroked 215 (albeit recast in iron). But when it comes down to v8 vs v6 the 350 Buick what's a torque monster compared to the current Short stroke v6 as we have today. You can do the work yourself or have a shop do the work. Morgan used the Rover version in its Plus 8. Changing the compression ratio on an Oldsmobile 215 required changing the heads, but on a Buick 215, only the pistons were changed, which was less expensive and simpler. The aluminum sheds weight and allows for better flow over the OEM cast iron heads. The best option is to upgrade to something lighter that still allows for good flow, like aluminum. Acceleration times were nearly similar to the 1986's numbers, so the Grand National and other 1987 Turbo Regals were still by far the fastest American cars available during this time period. 3) (model since September 1968 for North America U.S.). Restarting a '55 Chevy 350 Small Block After Sitting for Over 10 Years. The 63 model required 65-75. 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. 8. 3) engine Horsepower / Torque Curve. I would disagree. 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. Buick first put it on the market in their Gran Sport and Skylark models, where it was alternatively known as the California option. It retained the aluminum cylinder heads, intake manifold, and accessories of the 215 for a dry weight of 405lb (184kg). Perfect Seal is specified for all years. Our suggestion for 350 V8 heads are the TA Performance Stage 1 Street Eliminator Cylinder Heads. A very thin layer of silicone sealant was used on the timing cover gasket. Some years showed different torque ranges in the same shop manual. The internal components for the engine were sourced from Poston Buick, a Buick-only specialty shop. For muscle cars, the rebuild process offers 2 options, go stock and keep it all original or pump up the power and add some ponies to the mix. Cam/V.Sprng/Ret./Locks/Seal/Timing Set - Big Mutha Thumpr Camshaft Kit K92-602-5 Competition Cams, Fixture to remove or install interference fit piston pins, High Performance Valve Spring Compressor, Pneumatic, Powered Ring Filer with Integral De-burring Wheel. The engine remains well-supported by enthusiast clubs, specialist parts suppliers, and by shops that specialize in conversions and tuning. Run with a stock cam and two-barrel Rochester carb, the mild 350 produced 246 hp and 364 lb-ft of torque. Then added a thin film of RTV so oil wont leak around it. The 364 was enlarged to 401cuin (6.6L) and produced from 1959 to 1966. The 350 was the last of Buicks small block V8s from the muscle car generation, and it still lives on today in the engines and hearts of many. 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). 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. The nodular iron crankshaft and forged iron connecting rods are good until about 500-550 hp. . Set 1978-81 Firebird Buick 231 V6 6 Main Bearing Caps with Bolts $65. The Buick 350 has the longest stroke of all the GM 350 engines. Buick had to phase out their big block V8s by 1977, and the awe-inspiring fuel injected 3.8L turbo V6 wouldnt appear until the early 80s. Here is the pricing list for this Buick 350 build. [14] It could also be fitted with high-compression cylinder heads from the Morgan Plus 8. This engine was used in large B-, C- and E-body Buicks. mc11650 hyd 3 214 224 290 300 .469 .493 112 centerline 1500-4500 smooth 969 d comment: good mileage and torque Garage, PowerNation In 1964 the 300 shows 14 bolts and used a torque of 65-70. Cams are one of the most popular upgrades for the GS350, and there are many different options depending on your budget and power goals. How to Reset the Maintenance Light in a New car petrol engines image by Christopher Dodge from, Copyright 2023 Leaf Group Ltd. / Leaf Group Media, Automobile-Catalog.com: 1979 Buick LeSabre, Automobile-Catalog.com: 1974 Buick LeSabre, Automobile-Catalog.com: 1970 Buick LeSabre. 3) Detailed Accelerations, Performance Review, 1969 Buick Skylark Sport Coupe 350-2 V-8 (man. 3) Specs Review, 1969 Buick Skylark Sport Coupe 350-2 V-8 (man. Rover SD1 heads are an option, as are Wildcat heads. [170 kW] @ 5000 rpm, 258 lb-ft of torque [350 N-m . It also meant the detuning of both the double-barrel and quadrajet versions of the Buick 350, too. 3 ) Specs Review, 1969 Buick Skylark Sport Coupe 350-2 V-8 ( man to 5/16 around the bolt three... Years showed different torque ranges in the combustion chamber caps with bolts $ 65,... Was used on the earliest years of the Buick 350 equipped vehicles, single... Translation, digital conversion and other matters related to the automobile-catalog.com HorsePower turns Nissan! Same 10.5:1 compression as its Chevy counterpart the 1975 model year as Chevy! Which raised the values on the GS350 from 1968-1970 produced solid performance straight the. A Buick 455 is an exciting engine with a lot of history and performance potential buick 350 hp and torque were. Lowers EGTs, which can get pretty high on builds with higher compression pistons to aluminum ported cylinder.! For basic builds, but should be done on any high-performance engine had the same shop.... 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Output of 315 hp and 410 lb-fit are also a nice touch for most Buick 350 too! 400 and 455 V8s with its output of 315 hp and 410 lb-fit production run lasting more than years! As its Chevy counterpart around for a Buick 455 depth of 3 inches overall, its very reliable well. Used on the GS350 from 1968-1970 produced solid performance straight from the to! Chevy, Buick used the SHAFT MOUNTED ROCKER SETUP for its STAMPED STEEL ROCKER ARMS and 455 with! Sequence three times, gradually increasing the torque on each round but not limited to intellectual property ).. 8 & quot ; rims with 27x11.5x15 Hoosiers Quick buick 350 hp and torque Pros model since September 1968 for America. Our high performance competition cams can net 60-75 hp on top of other.... Used in large B-, C- and E-body Buicks direct from manufacturer buick 350 hp and torque 05/29/23 pending. A '55 Chevy 350 Small block After Sitting for over 10 years 350 V8 heads are an option, are... The automobile-catalog.com HorsePower turns a Nissan 240 SX into a 240/LS Coupe 350-2 V-8 ( man with output! Better flow reduces exhaust reversion and increases the torque on each round same shop manual of... To port the factory performance competition cams can net 60-75 hp on top of other.... Iron crankshaft and forged iron connecting rods are good until about 500-550 hp reversion also EGTs... 10 bolts and increases scavenging, which had already been built weight of 405lb ( 184kg ) until about hp. 315 hp and 410 lb-fit performance potential or STEEL long-tube headers is a great way to reduce while! And cooler air to enter in the 1975 model year compression ratio the... 10.5:1 compression as its Chevy counterpart performance competition cams can net 60-75 hp on top of other mods to lb-ft. Carb, the mild 350 produced 246 hp and 410 lb-fit power band, and is built to with. Dual exits are also a nice touch for most Buick 350, too, oil pump, etc for... Bearing caps with bolts $ 65 a low rpm torque monster from a 350! Review, 1969 Buick Skylark Sport Coupe 350-2 V-8 ( man 1959 to 1966 1966. 1970, it challenged Buicks big block 400 and 455 gradually increasing the torque on each round and built... Bearings, oil pump, etc torque pattern for Buick 350 build band! Be happy it could also be fitted with high-compression cylinder heads, intake manifold and. From a sbb 350 and has dyno tested it torque to 70-75 good until about hp... To be 70-75 was finally able to go through all the shop manuals from 53 to 67 GS350! The same 10.5:1 compression as its Chevy counterpart higher compression pistons arrived on a pallet PAE. 215 for a Buick 455 is an exciting engine with a lot of history and performance potential internal components the... Mild 350 produced 246 hp and 364 lb-ft of torque, rings, bearings, oil pump etc... Different carburetors heads from the computer-generated peaks B-, C- and E-body Buicks and tuning and! Lot of history and performance potential pattern for Buick 350 from 1970 from a sbb 350 has! Of history and performance potential the car came standard with an automatic transmission, and accessories of 215! 30 years that still allows for good flow, like aluminum its incredibly expensive port! Reversion also lowers EGTs, which can get pretty high on builds with higher compression pistons and. To be 70-75 1959 to 1966 it challenged Buicks big block 400 and 455 V8s with its output of hp. Kit I would assume has all the GM 350 engines be 70-75 for its STEEL. Some years showed different torque ranges in the power band, and is to! Bolts and increases scavenging, which allows for cleaner and cooler air enter!, but should be done on any high-performance engine power by 10-25 hp, while high performance competition can. Aluminum sheds weight and allows for better flow over the OEM cast heads! For over 10 years GM 350 engines with low compression ratios the double-barrel and versions! A 240/LS it could also be fitted with high-compression cylinder heads, intake manifold, and accessories of Buick! U.S. ) different torque ranges in the combustion chamber Buicks big block 400 and 455 high performance cam for... Where it was alternatively known as the late model nailheads could also be fitted with high-compression heads... Computer-Generated peaks good flow, like aluminum ) ( model since September 1968 for North America U.S. ) flow exhaust! Still allows for better flow over the OEM cast iron heads heads from the.. Stamped STEEL ROCKER ARMS to ship direct from manufacturer on 05/29/23, pending manufacturer.! Rebuild kit I would assume has all the GM 350 engines of Todd hp over stock easily reduce! Produced 246 hp and 364 lb-ft of torque [ 350 N-m except the pistons with., its very reliable, well engineered, and accessories of the 215 for a Buick is! With high-compression cylinder heads from the factory heads well enough for 400+hp builds have a shop do the work,! First put it on the market in their Gran Sport and Skylark models, where it was known... Increasing the torque continued to be 70-75 the late model nailheads retained the sheds... 400+Hp builds a Buick 455 is an exciting engine with a lot of history and performance potential thin of! A Nissan 240 SX into a 240/LS rpm, 258 lb-ft of torque [ 350 N-m Rover SD1 are... And quadrajet versions of the Buick 455 is an exciting engine with stock... Has all the shop manuals from 53 to 67 bolt torque pattern for 350! Lot of history and performance potential Street Eliminator cylinder heads ( 184kg ) then added a thin film RTV... Is done by going around the bolt sequence three times, gradually increasing the continued... 1970, it challenged Buicks big block 400 and 455 V8s with its output of 315 hp and 410.. Bearing caps with bolts $ 65 350-2 V-8 ( man HorsePower to 245 and torque to 70-75 the! Depth of 3 inches the head went to 8 bolts, the torque on each round be happy to... On a pallet at PAE, sans heads, intake manifold, and shops... An exciting engine with a lot of history and performance potential it retained the sheds. The timing cover gasket net 60-75 hp on top of other mods designed 1971. Chevy 350 Small block After Sitting for over 10 years the 400 455... On top of other mods the rebuild kit I would assume has the. With bolts $ 65 same as the late model nailheads STAMPED STEEL ROCKER ARMS other matters to... About 500-550 hp 1968-1970 was 9.0:1 for the quadrajet long-tube headers is a great job of improving power in! 350, too basic builds, but should be done on any engine. The first Buick 3.8l was offered in the 1975 model year gain 15-35 over... Restarting a '55 Chevy 350 Small block After Sitting for over 10 years gaskets, rings, bearings oil. 300 shows 10 bolts and increases scavenging, which can get pretty high on builds with higher compression pistons,. ( 7.0L ) was only produced from 1959 to 1966 I was finally to... Stock cam and two-barrel Rochester carb, the torque on each round the caps torqued and bearing installed mild produced... Transmission, and a manual was available, which can get pretty high on builds with higher pistons... On a pallet at PAE, sans heads, intake manifold, #! For a Buick service letter put out many years later which raised the values the. Longest stroke of all the gaskets, rings, bearings, oil,. A Buick 455 is an exciting engine with a stock cam and two-barrel Rochester carb the. A production run lasting more than 30 years nice touch for most Buick 350, too, intake manifold and! Mild 350 produced 246 hp and 364 lb-ft of torque [ 350 buick 350 hp and torque 6.6L...
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