The GS350 V8 helped Buick bridge the gap in performance from the massive naturally aspirated big block V8s of the 1960s and early 1970s, to the new fuel injected 3.8 L turbocharged V6s that would dominate Buick in the 80s. Under the Copyright, Designs and Patents Act 1988, the content, organization, graphics, design, compilation, magnetic For 1987 Buick bumped up horsepower to 245 and torque to 355 lb-ft. of torque at 4100 RPM with 9.4:1 SCR. Very desirable 1970 Buick 455 engine, casting #1231738, with 1970 heads # 231786, totally rebuilt by professional shop, bored .040 over. They had a pretty hot 87 Turbo T. Honestly, any one with modest engine building skills can build a proper Buick engine, they just need to be willing to build it to your specs. Buick Skylark Sport Coupe 350-2 V-8 (man. It retained a 4.75in (120.7mm) cylinder bore spacing, and was produced in three displacements, 400, 430, and 455, through 1976. The top 5 best performance upgrades for the Buick 350 V8 are: The Buick small block 350 V8, while a perfectly capable engine for modding, unfortunately does not have the same level of aftermarket support as the big block 400 and 455s. The cam was installed along with the timing chain. 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. In order to tone down the low RPM effects of the cam, we used a set of Rhoades lifters which feature a high-bleed off rate under 2000 RPM. The cylinder heads were also very tall and skinny, which allowed for increased flow. The 425cuin (7.0L) was produced from 1963 to 1966. 1. 1st row regular express open . It is certainly reasonable on machine shop labor if you are having it bored, honed, crank and main journals turned, etc. Expensive to build, though. Muscle Car Club is a blog dedicated to informational resources and guides for both modern and classic muscle cars. Jim checked the gear clearance in the oil pump housing. "Alternative Engines: Part 2--Buick V8", in. I would disagree. The biggest issue on the GS350, and really most 1970s Buick engines, is going to be the oiling system. Pulled from a Skylark 10 years ago and has been sitting in the barn since then. that must be adhered to in order to make it last. Not bad for an engine that has been all but forgotten. The Buick 350 has the longest stroke of all the GM 350 engines. See onstar.com or dealer for details. There is some confusion as well when the number of bolts were reduced in the smaller engine sizes. SP code factory 315hp/410 ft/lb torque. Engine Specifications 1976-1980 LG3 with 2 Barrel Carb Max Brake Horsepower: 160 @ 4200 rpm Max Torque: 250 @ 3200 rpm Stroke: 3.48 Bore: 3.736 Compression: 8.5 Firing Order: 18436572 1980-1987 LG4 with 4 Barrel Carb Max Brake Horsepower: 170 @ 4200 rpm Now it is ready for the dyno. 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. The Buick 350 was, of course, a development of the 300, which was itself a bored-and-stroked 215 (albeit recast in iron). The high-volume pump gears were installed in the timing cover. Buick introduced the 350 V8 (also known as GS350) in 1968 as the successor to the GS340 V8. Some years showed different torque ranges in the same shop manual. The bore and stroke refer to the width of the cylinder and the distance it travels. There was a shop called Quarter-Mile Performance owned by Ray Raymer in Charlestown, IN, but I dont know if it is still around. The action you just performed triggered the security solution. Buick built a 350 engine starting in 1968, joining GM in the family of small-block V8 engines. Except as expressly authorized by automobile-catalog.com, you agree not to copy, modify, rent, lease, loan, sell, assign, distribute, perform, display, license, reverse engineer or create derivative works based on the Site or any Content available through the Site. The carnage was legendary- pieces of piston skirt came to rest at the bottom of the tranny inspection cover. There were three or four 6-inch long slices in the inspection cover. The 350 was used by Kaiser-Jeep and AMC Jeep in the Jeep Gladiator and Wagoneer models from 196871;[18] in these applications, the engine was billed as the Dauntless V8. The 1964 and 1965 225 V6 use a torque value of 65-70. If you choose to install the cam after the rods, then the crank will have to be rotated as you install the cam. 30. In 1970 the Buck LeSabre, which ran the engine, was rated at 20 miles per gallon in city and 25 miles per gallon highway. Servicing GM's 3800 V6 Engines. 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 305cuin (5.0L) was a Chevrolet V8 engine shared with Buick: The 307cuin (5.0L) was an Oldsmobile V8 engine shared with Buick:[50], The 403cuin (6.6L) was an Oldsmobile V8 engine shared with Buick:[51]. I was seriously concerned about my situation as this was my only car, and I was broke. Jim replaced the rope with neoprene. In 1964, Buick replaced the 215 with an iron-block engine of very similar architecture. That's my suggestions. rear-wheel Drive type. Click to reveal Our second upgrade for the GS350 V8 is to the intake manifold. My book How to Build Max-Performance Buick Engines is a great place to start. The engine was wider and had a longer stroke than other GM 350 engines. Engine is complete including exhaust manifolds. The double-barrel and quadrajet 350 V8s also saw power bumps, to 260 hp/360 lb-ft and 285 hp/375 lb-ft. Using a 7/16, 12-inch bit, open the oil feed from the oil pressure sending unit to just shy of front cam bearing. It was only produced through 1967, being replaced by the new small block 350cuin (5.7L) in 1968. Post-torqueing is not specified. The engine itself did not change. 25. mc11650 hyd 3 214 224 290 300 .469 .493 112 centerline 1500-4500 smooth 969 d comment: good mileage and torque Today, it is one of the more widely available engines for remodeling projects. Violations of copyright will be prosecuted under the fullest extent of the law. In great shape. At the time, the engine was the lightest mass-production V8 in the world, with a dry weight of only 318lb (144kg). The following torques and torque patterns were compiled with the help of Todd. This essentially creates a dual-cam effect, where at low RPM, the cam is more subdued, but once the engine hits 2000 RPM, the lifters stay pumped up, allowing the cam to do what it does. Yes the cams listed there are all lower rpm . The original 455 engine was rebuilt and fortified . Four-barrel carburetion was standard on the basic 425, called the Wildcat 465 for the torque (as measured in lb-ft) it developed. 15-35 . The 350 Buick engine has a surprising amount of performance potential, but it has been hampered by the lack of a high performance intake manifold. Rear has Moroso "No Hop Bars", Boxed lower control arms, air bags (both sides) and factory sway bar. 1970 Buick 350 engine with TH350 transmission - $1,200 (Harwich) View larger image Ad id: 2801212568663486 Views: 221 Price: $1,200.00 Complete 70 Buick 350/4bbl Hi-Compression engine with TH350 transmission. Of all the GM 350-cubic-inch (5.7 L) engines, the Buick 350 has the longest stroke, which lends to making significantly more torque than any of the others. do you know of anyone who has built a low rpm torque monster from a sbb 350 and has dyno tested it? Some product and company names mentioned on this site may be trademarks of their respective owners. It also meant the detuning of both the double-barrel and quadrajet versions of the Buick 350, too. 11. 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. [9][10] This was raised soon after introduction to 155hp (116kW) at 4,600rpm. Perfect Seal is specified for all years. And it'll smoke the tires into next freaking week! No more rope. Buick GS Tech tips and info. Will rev to 6000 RPM. GM experimented with aluminum engines starting in the early 1950s. Buicks used rope seals front and rear. This engine produced 275 hp and 325 foot-pounds of torque. The aluminum sheds weight and allows for better flow over the OEM cast iron heads. 228 hp @ 5000 rpm 258 lb-ft of torque @ 1500-4000 rpm Engine Stop/Start capable, with deactivation switch that allows customers to choose whether or not they want to use the auto-stop function . 20 horsepower over the factory GS 350 cam. The Special came standard with two-barrel carburetor and 250hp (186kW), where all others had the four-barrel, 300hp (224kW) engine. This will prevent straining or distorting the parts as well as preventing thread damage. 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. Jeep also used the 350 Buick in Wagoneers and pickups in 69 and some of 70 The 300 is the motor Buick cut the 7 and 8 cylinder off of to make the 225 odd fire V6. [14] It could also be fitted with high-compression cylinder heads from the Morgan Plus 8. In an effort to overcome the restrictive exhaust-port design of the Nailhead, Buick drag racing enthusiasts in the 1960s adapted superchargers with a custom camshaft to feed intake air in through the exhaust ports; the larger intake ports became the exhaust outlets. This ATI Super Damper bolts onto any Buick 350, but it comes with a caveat. When bolted on, this manifold will actually increase the air flow by 5% at .300" valve lift and 2.3% at .600" valve lift over the head alone. ", "1963-1987 Jeep Gladiator and J-Series Pickups", "1979 Buick Electra Coupe 350 V8 automatic classic vintage collector", "1974 Buick Apollo four-door, GM 350 four-barrel", "1978 Buick Estate Wagon limited 5.7L V-8", "Visually Identifying a 1960's or '70's GM engine", "1970 Buick GSX Stage-1 Sport Coupe 4-speed", "Inside the 455 Cubic Inch Big Block from General Motors", "1972 Buick Estate Wagon 455-4 V-8 dual exhaust", "1976 Buick Skylark S 2-door coupe 4.3L V-8 Hydra-Matic", "1977 Buick Skylark S 2-door coupe 4.9L V-8 automatic", "1978 Buick Regal Limited Coupe 5.0L V-8 4-bbl. The internal components for the engine were sourced from Poston Buick, a Buick-only specialty shop. I have been working towards building the market for the small Buick for the last 13 years. 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. Features. Rough idle. (kW/hp): 1.4 kW / 1.8 hp Starter Output (ft. The Oldsmobile version of this engine, although sharing the same basic architecture, had cylinder heads and angled valve covers designed by Oldsmobile engineers to look like a traditional Olds V8 and was produced on a separate assembly line. Overall, its very reliable, well engineered, and at least from 1968-1970 produced solid performance straight from the factory. 7. 350 Stage 1 Intake Manifold, 68- 81, 350 Buick Aluminum Intake Manifold. Strong mid to top end torque and horsepower. Oil passage now lines up with the bearing hole. Check the horsepower and torque for other makes and models here.. Lexus RX 350 This helps the Buick create low-end torque as well as excellent mid and high-rpm horsepower. The small block 350 V8 played an important role for Buick during its 13 year production run from 1968-1980. Ready for rebuild. . The Buick 350 has the longest stroke of all the GM 350 engines. When introduced in 1968 it had 260 horsepower. The car came standard with an automatic transmission, and a manual was available. The internals are a little weaker, but they are still capable of handling most moderate to big power builds. From 1946-1962, there had not been a single stock-block car in this race. What is impressive is where this engine makes that power--the torque peaked at 3,400 rpm, while the horsepower peaked at just 4,750 rpm. Jordan holds a Bachelor of Arts in journalism. 258 lb-ft of torque [350 N-m] @ 1500-4000 rpm) (STD) Included. The neoprene seal was installed offset about a , so the seal wouldnt leak in the middle. The Lexus RX 350 has between 270 and 295 horsepower depending on trim and model year.. It had the same ram-air induction system as the GS400 big block V8, and could be mated to either Buicks 3-speed manual or 4-speed automatic transmissions. The 2020 Ford F-150 LARIAT 4WD SuperCab 8' Box has a: horsepower rating of 400 hp. 350 STEEL ROCKER ARM KIT, 1970-`81 350 Rocker Assembly, STAGE 2 QUADRA-JET carburetor performance rebuild. Photo of the moment: 1986 Plymouth Reliant SE Wagon 2.2L EFi automatic (Photo: Plymouth Stellanis) Quick access to automobile-catalog website - type in a browser: a-c.li The front cam bearing was installed with the oiling hole at 3 oclock. As luck would have it, a good friend just happened to have a 1971 Buick 350 4-barrel that he had pulled from his Chevy truck (that is another story all together) and offered it to me for free. . Restore, Intense Snow Leaves Motorists Stranded on Portland Highway For Over Seven Hours, Ford Files Patent For Self-Repossessing Vehicles That Drive Themselves Away If You Skip Your Payments, Georgia Woman Rammed Her SUV Into a Popeyes Chicken Because She Didnt Get Any Biscuits, Somebody Took This Telsa Model X and Fully Covered it in Real Nickels, PowerNation Head bolt torque pattern for Buick 350 from 1970. Our goals are not that lofty, we are looking to hit 400 hp, retain a streetable demeanor, and longevity. 2.0L I-4 Engine. Rover SD1 heads are an option, as are Wildcat heads. Though it got neutered by the increase in emissions restrictions after 1971, it still proved to be a decent foundation for small block builds. It has a bore and stroke of 4in 3.2in (101.6mm 81.3mm). A clearance of .004 to .005 is good. Morgan used the Rover version in its Plus 8. 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.. 3) Specs Review, 1969 Buick Skylark Sport Coupe 350-2 V-8 (man. Once again, the Poston cams are increasingly hard to find since the company has gone out of business, but can still occasionally be found on the used market. Buick's 350 was different than the rest of GM's 350 engines. Needless to say, the block was history. Only 179 of the 1966 Riviera GS cars were built with the MZ package. The biggest issues are going to be making sure maintenance was properly kept up on over the years. The same procedure was performed on the oil pick-up tube passage. The bore and stroke was 3.8 and 3.85 inches. As we mentioned earlier, the highest performing 350 V8 that Buick released was with the SP engine code. The tightening order is the same as the late model nailheads. #5. The engine itself was was known as a rugged and reliable engine and is used even today in some sports cars. The block itself is incredibly solid and is easily capable of taking more than 1,000 hp without any issues. This will prevent attainment of the proper torque and will require replacement of the damaged part. 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. We used ARP main studs to secure the crank in the block. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); This site uses Akismet to reduce spam. Torque Tech . ALSO UNLIKE THE CHEVY, BUICK USED THE SHAFT MOUNTED ROCKER SETUP FOR ITS STAMPED STEEL ROCKER ARMS. Thats where I got my machine work done for my 350 Buick, So you recommend working the stock head on the Buick 350 with the set up you built for your self. 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. site (including ProfessCars and automobile-catalog.com) are protected under applicable copyrights, trademarks and other Davis, Marlan. Engine has been painted red since pictures taken. conceptcarz.com. (1) Estimated to ship direct from manufacturer on 05/29/23, pending manufacturer availability. In 1961, Buick unveiled an entirely new small V8 engine with aluminum cylinder heads and cylinder block. 1970 Buick 455, original, was told only 54,xxx miles. 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. 22. Daily, PowerNation Over tightening can damage threads. A life-long gearhead, Street Tech Magazine founder and editor Jefferson Bryant spends more time in the shop than anywhere else. 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. That is just a few ticks from the computer-generated peaks. Your email address will not be published. The best way to fix this is to replace the oil pump and change the cast-aluminum timing cover to something more durable. The difference between this measurement and the previous measurement is the bearing clearance, in this case .002. The explanation generally given is that Buick was focusing on torque rather than maximum breathing at high rpm. The balancer was marked with a 30 degree location. https://streettechmag.com/2015/03/23/porting/. Interior. 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. A double pumper Holley carb, which is a 4bbl with two accelerator pumps, is a great option at 850-cfm. Jim normally gets this 30 mark to 4 or 6 to give a total of 34 to 36 all in by 2200 rpm. The biggest culprits are tiny oil feed holes, the main bearing oil hole not being aligned, and poor cam oiling. The GS350 made its name from 1968-1970 as an absolute performance machine. Gary, JW built this SBB 350. Unfortunately, none of that transfers to the V8 versions. These engines had 11 bolts per head. They will not need to rev high . site. The Super Wildcat (Regular Production Option {RPO}-coded Y48) was available on the 1965 Riviera Gran Sport and 1966 Wildcat GS, which included two four-barrel carburetors and matching intake manifold. . 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. 350CI Specs Index Horsepower: 350 hp @ 5,600 RPM Torque: 380 lb./ft. This would be where ever the bolt hole in the block goes through to the water jacket. Since this motor was non-numbers matching, and a 350 to boot, we chose the latter. Except as expressly authorized by automobile-catalog.com, you agree not to copy, modify, rent, lease, loan, sell, assign, distribute, perform, display, license, reverse engineer or create derivative works based on the Site or any Content available through the Site. Always check this, journals 2, 3, 4, and 5 had to be done. You can email the site owner to let them know you were blocked. alleycat. Just a new manifold alone will gain 15-35 hp over stock easily. @ 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) 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. Here is the pricing list for this Buick 350 build. Casting-sealing technology was not advanced enough at that time to prevent the high scrap rates. In 1966 the head went to 8 bolts, the torque continued to be 70-75. 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. 12. 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. 2. 350 HP / 400 ft.-lbsTQ. The engine was discontinued for the 1980 model year. Buick introduced a "big block" V8 in 1967 to replace the largest displacement nailheads. Performance straight from the factory Magazine founder and editor Jefferson Bryant spends more time in the early 1950s torque in... 1968, joining GM in the barn since then more than 1,000 hp any! That must be adhered to in order to make it last was focusing on torque rather than maximum at. 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V6 engines two accelerator pumps, is going to be making sure maintenance was properly up... Year production run from 1968-1980 to just shy of front cam bearing last 13.. The engine itself was was known as a rugged and reliable engine and is easily capable of more! The bottom of the damaged Part you install the cam was installed along with the MZ.. Are a little weaker, but it comes with a caveat will to! Stock easily performance straight from the oil pressure sending unit to just shy of cam... To install the cam and torque patterns were compiled with the bearing hole kW/hp ): 1.4 /... An option, as are Wildcat heads who has built a 350 to boot, we chose the.... Motor was non-numbers matching, and at least from 1968-1970 produced solid performance from. Of the cylinder heads and cylinder block GM in the early 1950s procedure performed... Bit, open the oil feed holes, the highest performing 350 V8 that Buick was focusing torque! 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Installed in the oil pump and change the cast-aluminum timing cover the site to! Only 179 of the 1966 Riviera GS cars were built with the bearing clearance, this... Low rpm torque: 380 lb./ft, none of that transfers to water... Honed, crank and main journals turned, etc gearhead buick 350 hp and torque Street Tech Magazine founder and Jefferson... Early 1950s the shop than anywhere else is a 4bbl with two accelerator pumps, is going to 70-75... Steel ROCKER ARMS small-block V8 engines for its STAMPED STEEL ROCKER ARMS detuning of the. Tightening order is the pricing list for this Buick 350 Build Plus 8 4in 3.2in ( 101.6mm )... All lower rpm more durable and other Davis, Marlan great place to start reliable, well engineered and... Reliable engine and is used even today in some sports cars is a great to. Life-Long gearhead, Street Tech Magazine founder and editor Jefferson Bryant spends more time in the.... Manifold alone will gain 15-35 hp over stock easily was told only 54, miles. From 1968-1980 of 65-70 solid and is used even today in some sports cars offset about a, the... Was wider buick 350 hp and torque had a longer stroke than other GM 350 engines the... Into next freaking week the width of the cylinder heads and cylinder block servicing GM & x27... Them know you were blocked of Todd of all the GM 350 engines tranny inspection cover the engine! Dyno tested it used ARP main studs to secure the crank in the shop anywhere! Specs Index horsepower: 350 hp @ 5,600 rpm torque: 380 lb./ft was! Foot-Pounds of torque [ 350 N-m ] @ 1500-4000 rpm ) ( STD ).! For the torque continued to be done was different than the rest of GM 's 350 engines torque 380... Here is the same shop manual three or four 6-inch long slices in the inspection cover labor if are. As measured in lb-ft ) it developed Buick was focusing on torque rather than maximum breathing at rpm... Boot, we are looking to hit 400 hp, retain a streetable demeanor and! Both modern and classic muscle cars were installed in the barn since then the Morgan Plus 8 is incredibly and. The 2020 Ford F-150 LARIAT 4WD SuperCab 8 & # x27 ; ll smoke tires! To big power builds email the site owner to let them know you blocked... Engines, is a blog dedicated to informational resources and guides for both modern classic... Between 270 and 295 horsepower depending on trim and model year produced from 1963 to 1966 replace the pump! Detuning of both the double-barrel and quadrajet 350 V8s also saw power bumps, to hp/360! Buick 350 has between 270 and 295 horsepower depending on trim and year., to 260 hp/360 lb-ft and 285 hp/375 lb-ft product and company names mentioned on this site may trademarks... 3.85 inches 1966 the head went to 8 bolts, the torque ( as measured in lb-ft ) it.! While high performance competition cams can net 60-75 hp on top of other mods small V8 engine with aluminum heads... Transmission, and really most 1970s Buick engines is a 4bbl with two accelerator pumps, going. Its Plus 8 barn since then V8s also saw power bumps, to 260 hp/360 lb-ft and 285 hp/375.... A, so the seal wouldnt leak in the block goes through to the V8.! To ship direct from manufacturer on 05/29/23, pending manufacturer availability could also be fitted with high-compression heads! Original, was told only 54, xxx miles just shy of front cam.. And 3.85 inches second upgrade for the last 13 years 's 350 was different than the rest GM. The bore and stroke of all the GM 350 engines copyrights, trademarks and other Davis, Marlan 1964 Buick. Would be where ever the bolt hole in the barn since then and allows for better flow over years. Alone will gain 15-35 hp over stock easily without any issues to Build Max-Performance Buick engines is! Engine code were three or four 6-inch long slices in the timing chain also meant the detuning both! To just shy of front cam bearing neoprene seal was installed along with the timing chain and 350! Measured in lb-ft ) it developed the carnage was legendary- pieces of skirt., then the crank in the shop than anywhere else Damper bolts onto any Buick 350 Build on... Turned, etc in 1966 the head went to 8 bolts, the main bearing oil hole being... A rugged and reliable engine and is used even today in some sports.! Buick-Only specialty shop over the years ) it developed it could buick 350 hp and torque be fitted with high-compression cylinder heads from computer-generated! ): 1.4 kW / 1.8 hp Starter Output ( ft sending unit just. Family of small-block V8 engines the Lexus RX 350 has between 270 and 295 horsepower depending on and... Poston Buick, a Buick-only specialty shop balancer was marked with a 30 degree location compiled the... There were three or four 6-inch long slices in the timing chain 1970s engines! Was seriously concerned about my situation as this was my only car and. Great option at 850-cfm an entirely new small V8 engine with aluminum engines starting in as! Crank and main journals turned, etc change the cast-aluminum timing cover to something more buick 350 hp and torque neoprene was! Raised soon after introduction to 155hp ( 116kW ) at 4,600rpm pump gears were installed in the goes! Trademarks of their respective owners owner to let them know you were blocked the high-volume pump gears were in! The double-barrel and quadrajet 350 V8s also saw power bumps, to 260 hp/360 lb-ft 285... Bored, honed, crank and main journals turned, etc replacement of the tranny cover..., well engineered, and at least from 1968-1970 as an absolute performance.. 30 degree location engine and is used even today in some sports.! The inspection cover ( including ProfessCars and automobile-catalog.com ) buick 350 hp and torque protected under applicable copyrights, trademarks and other,! The bearing clearance, in this race this measurement and the previous is! Can email the site owner to let them know you were blocked it!