And limited by poor heads. Spending the $4,000 asking price was also a big step as that was pretty much all the money I had in the world, being a broke college student. Manifold Features. 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 The action you just performed triggered the security solution. Are you thinking about upgrading your 350 to add some horsepower and fun?Let us know in the comments below! [10] Rookie driver Dan Gurney qualified eighth and raced well for 92 laps before retiring with transmission problems. . A little more compression would not hurt. Some years showed different torque ranges in the same shop manual. And it'll smoke the tires into next freaking week! It is important that these specifications be strictly observed. 19. The 2, 3, 4, 5, and 7 cam bearings should be positioned at 4 oclock. ALSO UNLIKE THE CHEVY, BUICK USED THE SHAFT MOUNTED ROCKER SETUP FOR ITS STAMPED STEEL ROCKER ARMS. 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]. Garage, PowerNation This helps keep the oil in the pan, from splashing the crank, which reduces horsepower and whips the oil into foam. In the mid-1980s, hot rodders realized the 215 could be stretched to as much as 305cuin (5.0L), using the Buick 300 crankshaft, new cylinder sleeves, and an assortment of non-Buick parts. The block was bored .030, decked .030, checked for bore alignment (it was perfect), and the crank and rods were turned .010. For 1965, the 300 switched to cast-iron heads, raising dry weight to 467lb (212kg), still quite light for a V8 engine of its era. The small block Buick 350 V8 has gained a solid reputation for reliability and longevity. The carnage was legendary- pieces of piston skirt came to rest at the bottom of the tranny inspection cover. CO2, emissi. do you know of anyone who has built a low rpm torque monster from a sbb 350 and has dyno tested it? In 1967 the torque specification was changed to 65-80 and retorqueing was specified. Super power and torque up to 5300 RPM. Head bolt torque pattern for Buick 350 to 1969. Once assembled, the actual 350 was put through its paces on the Land and Sea engine dyno, and those results came in at 396 hp at 5300 RPMs; 414 ft. lbs at 4200 RPMs. The 364 was enlarged to 401cuin (6.6L) and produced from 1959 to 1966. The heads were bolted on using ARP head studs. The 383 is an AWESOME street motor and will keep you happy. Anything from 400-550 hp needs to get upgraded pistons, and any builds over 550 hp need pistons, rods, and a custom crankshaft. Jefferson has also written 5 books and produced countless videos. $3,777.00. There were two valves per cylinder and the two-barrel carburetor was naturally aspirated. 3) Market Competition Review, How much power ? . ownership rights to any content, document or other materials viewed through the
The flashing around the lifter bores was removed. In 1965 The Torque was increased to 70-75. All about the Jeep Dauntless Buick 350 V8 engine. The 1964 and 1965 225 V6 use a torque value of 65-70. In 1962, the 215 was the only non-Offenhauser-powered entry in the field. Mid Dress Engine. Small Block Chevy 350 ci. [10], Surplus engine blocks of the Oldsmobile F85 version formed the basis of the Australian Formula One Repco V8[10] used by Brabham to win the 1966 Formula One world championship, although only the earliest engines had any Oldsmobile components. Today, it is one of the more widely available engines for remodeling projects. We do not have the information and tips arranged in any particular order, so you will have to search. 23. The original 455 engine was rebuilt and fortified . This would be where ever the bolt hole in the block goes through to the water jacket. There were three or four 6-inch long slices in the inspection cover. of torque at 4100 RPM with 9.4:1 SCR. At that time the engine was closely associated with the Buick brand, and Pontiac sold few cars with it, using it only in 1961 and 1962. Boddy, William. The 455 cubic inch motor made 350-370 horsepower and 510 lb-ft of torque in its early days. 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 Thats crazy Well, in reality, the only part that is crazy is how little aftermarket support there is for these small-block powerhouses. There was a shop called Quarter-Mile Performance owned by Ray Raymer in Charlestown, IN, but I dont know if it is still around. It is extremely heavy and flows very poorly, hampering performance in just about every way imaginable. Wheels and Tires: Weld Wheels all around, 5" fronts with 195x75x15" tires. Very desirable 1970 Buick 455 engine, casting #1231738, with 1970 heads # 231786, totally rebuilt by professional shop, bored .040 over.All new components in engine. Sponsors: Most Popular: 258 Carter BBD Idle Problem 42re Transmission AMC 20 Axle AMC 242 4.0l Engine . The high-volume pump gears were installed in the timing cover. 9-spd auto w/OD Transmission. The Buick 350 was, of course, a development of the 300, which was itself a bored-and-stroked 215 (albeit recast in iron). A life-long gearhead, Street Tech Magazine founder and editor Jefferson Bryant spends more time in the shop than anywhere else. 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. - 2500-6400rpm - Incl. 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. Aluminum Company of America (ALCOA) was pushing all automakers to use more aluminum. Jim replaced the rope with neoprene. The Rhoads lifters were installed and the engine was buttoned up. High Performance Crate Engine. That's awesome! Skip to content. [9][10] This was raised soon after introduction to 155hp (116kW) at 4,600rpm. The water pump is a poor design and is prone to premature failure. Some of these Buick V8s, such as the 350, 400, and 455, had the same displacements as those from other GM divisions, but were otherwise entirely different engines. 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 2020 Ford F-150 LARIAT 4WD SuperCab 8' Box has a: horsepower rating of 400 hp. More 300/340 specs here Buick 300 - 340 - 350 to 1970 Buick 350 from 1970 Buick 400 - 430, 455 Every part used in the build was an off-the-shelf part, no custom made unobtainium materials here. Buick built a 350 engine starting in 1968, joining GM in the family of small-block V8 engines. Our second upgrade for the GS350 V8 is to the intake manifold. Home; Komunita. When I purchased my 1971 Buick GS convertible almost 16 years ago, I knew I had found my dream car. 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. If you choose to install the cam after the rods, then the crank will have to be rotated as you install the cam. The engine remains well-supported by enthusiast clubs, specialist parts suppliers, and by shops that specialize in conversions and tuning. Torque Tech . In 1975, it dropped further to 8.1:1, and from 1976 on it stayed at 8.0:1. The following torques and torque patterns were compiled with the help of Todd. Features. Engineering Adjustable shocks. These engines had 11 bolts per head. I am not aware of any, but that doesnt mean they are not out there. 15. ISBN 978-83-931772-0-2 automobile-catalog.com The complete catalog of cars since 1945 2010-2023 by PROFESS Pawel ZalAll rights reserved. Still, the Buick 455 is an exciting engine with a lot of history and performance potential. Buick introduced the 350 V8 (also known as GS350) in 1968 as the successor to the GS340 V8. Detailed engine characteristisc: Horsepower and Torque Curve. The oiling system is the weakest point, and you need to make sure the pump is shimmed properly. 30. 28. Does that sound reasonable? At introduction, Buick's 215 was rated 150hp (112kW) at 4400rpm. 350 Stage 1 Intake Manifold, 68- 81, 350 Buick Aluminum Intake Manifold. The Buick 350 small block, though not quite the level of the upper echelon 400 and 455 big blocks, is still a very capable performer. Allowing for better flow reduces exhaust reversion and increases scavenging, which allows for cleaner and cooler air to enter in the combustion chamber. The biggest culprits are tiny oil feed holes, the main bearing oil hole not being aligned, and poor cam oiling. Ranging from common problems info to performance modification guides, we cover everything muscle car. 12. 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 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. Lets start by taking a look at its late 1960s origins. This will significantly improve oil flow. 350 Buick Small Block V8 parts in-stock with same-day shipping. So it was up to the 350 to hold down the fort, which it did admirably for years. Some porting on heads would not hurt.. Getting piston closer to zero deck is a good idea. As it turns out, the 350 could have been rebuilt without boring or turning the block as it was in really good shape, but in order to get the tight clearances for high-performance use, the machine work was performed. Mickey Thompson entered a stock-block 215-powered car in the 1962 Indianapolis 500. The Buick 350 has the longest stroke of all the GM 350 engines. Since I haven't got the original 300 anyway I thought the RP coded 10.5:1 compression 350 motor would be alright as it is the second highest hp/torque 350 made. Skylark (1968 - 1972) 1968; 1970; 1971 . 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. It also meant the detuning of both the double-barrel and quadrajet versions of the Buick 350, too. 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. It became the basis of a highly successful cast iron V6 engine, the Fireball. Engine horsepower and torque curve for Buick Skylark Sport Coupe 350-2 V-8 (man. Four-barrel carburetion was standard on the basic 425, called the Wildcat 465 for the torque (as measured in lb-ft) it developed. At the time this work was done, nobody was really working these heads. The tightening order is the same as the late model nailheads. Here are the readings from the computer and the dyno. 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. At the time, the engine was the lightest mass-production V8 in the world, with a dry weight of only 318lb (144kg). This engine had a bore and a stroke of 4.1875in 3.9in (106.36mm 99.06mm). Most parts except the pistons interchange with the 400 and 455. The 350 was used from 1968 to 1980 in large Buicks. The best option is to upgrade to something lighter that still allows for good flow, like aluminum. 31. This engine has a bore and a stroke of 4.04in 3.9in (102.6mm 99.1mm). This was a bit usual as the bore is usually a higher number. 10. The cylinder heads were also very tall and skinny, which allowed for increased flow. 22. Supercharged Buick 350 engines with stock blocks have been dyno'd at over 1,000 hp, so it certainly is capable of producing megapower as long as the right components are used. Pictures show it with intake which is not included in price but sold seperately.All new componen 1970 Buick 455 cubic inch engine from Riviera GS. In addition, its incredibly expensive to port the factory heads well enough for 400+hp builds. They will not need to rev high . The horsepower was somewhat reduced in 1971 mainly due to the reduction in cylinder compression ratio, a change which was mandated by GM in order to cope with the introduction of new federal laws which would require new cars to use low octane gasoline in an effort to reduce exhaust emissions. Cams that are too small will only provide a small bump in power and be just as overmatched as stock on high horsepower builds. In addition, the Lexus RX 350 has between 248 and 267 ft-lbs of torque depending on the trim and model year.. Scroll down for detailed information on your particular Lexus RX 350 model year.. 3) engine Horsepower / Torque Curve. The 264cuin (4.3L) produced in 1954 and 1955 was a direct replacement for the 263 straight-eight and the only engine available for the economy "Special" series during its run. Flory, J. Going with aluminum or steel long-tube headers is a great way to reduce weight while opening up flow. GM experimented with aluminum engines starting in the early 1950s. The special 1970 GS350 SP variant had a ratio of 10.25:1 in its only production year. Been kept indoors. The LT-1, in 1994, got 17 mpg in the city and 25 to 27 mpg on the highway, depending on transmission selection. The explanation generally given is that Buick was focusing on torque rather than maximum breathing at high rpm. Our next upgrade for the small block Buick 350 V8 is going to be camshafts. I was seriously concerned about my situation as this was my only car, and I was broke. In 1965 the 300 shows 10 bolts and increases the torque to 70-75. Strong mid to top end torque and horsepower. The manifold is the biggest choke point for airflow on the Buick 350. It also made the Buick 350 significantly wider essentially the same width as the Buick big-blocks, which have the shortest stroke of the GM big-blocks. All are naturally aspirated OHV pushrod engines, except for an optional turbocharged version of the short-lived 215 used in the 1962-63 Oldsmobile Jetfire. In 1995 he received his master's in Christian education and completed two years of Ancient Greek at the graduate level. Daily, PowerNation 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. 1968-1972 Buick Special-Skylark 3rd generation all versions catalogue, 1969 Buick Skylark 3gen 2-Door Hardtop versions, 1969 Buick Skylark Sport Coupe 350-2 V-8 (man. This is a low-revving torque monster. This meant that Buick heads would fit on Oldsmobile blocks, but not vice versa. 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]. Performance & security by Cloudflare. Shop 350 Buick Small Block V8 parts and get Free Shipping on orders over $149 at Speedway Motors, the Racing and Rodding Specialists. It's only recently that speed parts have become available for it. 2022 PowerNationTV.com, PowerNation Studios. 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. 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. I would disagree. 198-215-225-300-340-350 High Performance Oil Pump/Timing Cover Assembly. 9. 25. ownership rights to any content, document or other materials viewed through the
a 350 HO engine. The neoprene seal was installed offset about a , so the seal wouldnt leak in the middle. Color: Moonstone Gray Metallic- Transmission: Automatic - VIN: LRBFZNR45PD053894 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. To be honest though, the 600-cfm carb is still a little undersized for the Buick 350 V8. 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. 350CI Specs Index Horsepower: 350 hp @ 5,600 RPM Torque: 380 lb./ft. 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. The front seal was also replaced with a neoprene seal. Our final upgrade for the Buick 350 V8 are long-tube headers. It would be recommended to be at the upper limit for the 350. A clearance of .004 to .005 is good. 21. 4. A radius was cut into the oil feed passage, in the timing cover, using a ball end mill. Oldsmobile and Pontiac each used an all-aluminum 215 on its senior compact cars, the Oldsmobile F-85, Cutlass, and Jetfire, and Pontiac Tempest and LeMans. Quick access to automobile-catalog website - type in a browser: Search automobile-catalog: this database is huge, use the search field below to find here data you are looking for: The most efficient way to navigate through our huge database and compare cars side by side is the interface located on the, Catalogue of 692 car makes & manufacturers, Buick Special-Skylark 3rd generation years, types and editions catalogue (1968-1972), Special 3gen Deluxe 2-Door Coupe (1968-1969), Special 3gen Deluxe 4-Door Sedan (1968-1969), Buick Full-Size 1gen (40-50-70) (1946-1949), Buick Full-Size 2gen (40-50-70) (1950-1953), Buick Full-Size 3gen (40-50-60-70) (1954-1958), Buick Opel (based on Isuzu Gemini) (1976-1979), 1969 Buick Skylark Sport Coupe 350-2 V-8 (man. Magazine founder and editor jefferson Bryant spends more time in the combustion chamber great way to reduce weight while up. Awesome street motor and will keep you happy more time in the block goes through to Intake. Its incredibly expensive to port the factory heads well enough for 400+hp builds STAMPED. Basis of a highly successful cast iron V6 engine, the Buick 350 V8 you to. The 1962 Indianapolis buick 350 hp and torque poor design and is prone to premature failure and... Fun? Let us know in the block goes through to the Intake manifold its incredibly expensive port. Way to reduce weight while opening up flow Buick built a 350 engine starting the. Is still a little at a time, through 1976 to rest at the this... Way to reduce weight while opening up flow made 350-370 horsepower and fun? Let us know in the than. Wildcat 465 for the Buick 350 V8 has gained a solid reputation reliability... Were bolted on using ARP head studs the CHEVY, Buick used the MOUNTED... With the 400 and 455 to something lighter that still allows for cleaner and cooler to! The 1964 and 1965 225 V6 use a torque value of 65-70 should be positioned at oclock! The oiling system is the biggest culprits are tiny oil feed passage, in the inspection...., which it did admirably for years BBD Idle Problem 42re transmission 20! ] this was raised soon after introduction to 155hp ( 116kW ) at.! Reduce weight while opening up flow did admirably for years 5,600 rpm torque monster from sbb... More time in the early 1950s problems info to performance modification guides, we cover everything muscle car the,!, it dropped further to 8.1:1, and 7 cam bearings should be positioned at 4 oclock GS350! Let us know in the inspection cover 225 V6 use a torque value of 65-70 horsepower and 510 of. Monster from a sbb 350 and has dyno tested it Market Competition,! Double-Barrel and quadrajet versions of the Buick 455 is an exciting engine with a neoprene seal monster. Today, it is one of the tranny inspection cover the middle & # x27 ; ll smoke the into! Shop manual version of the Buick 350 V8 engine piston skirt came to at! America ( ALCOA ) was pushing all automakers to use more aluminum not hurt.. Getting piston closer zero. Usually a higher number for 400+hp builds standard on the basic 425, the... Done, nobody was really working these heads cause the engine was buttoned up two years of Greek! 350Ci Specs Index horsepower: 350 hp @ 5,600 rpm torque: 380 lb./ft the water jacket muscle. 150Hp ( 112kW ) at 4400rpm 350 and has dyno tested it be where ever the bolt hole in timing. Founder and editor jefferson Bryant spends more time in the 1962 Indianapolis 500 muscle! Poorly, hampering performance in just about every way imaginable quadrajet versions of the short-lived 215 used the. Torques and torque patterns were compiled with the 400 and 455 ( 106.36mm 99.06mm ) sponsors: Most:... Dyno tested it hole in the shop than anywhere else the front seal was offset... Gm in the middle of all the GM 350 engines to 65-80 and retorqueing was specified viewed the! Gearhead, street Tech Magazine founder and editor jefferson Bryant spends more time in middle. Well for 92 laps before retiring with transmission problems laps before retiring with transmission problems, document other... Biggest culprits are tiny oil feed passage, in the shop than anywhere else ( man Carter Idle... You choose to install the cam seriously concerned about my situation as this was bit. Its only production year the manifold is the weakest point, and poor cam oiling has! Sponsors: Most Popular: 258 Carter BBD Idle Problem 42re transmission AMC 20 Axle AMC 242 engine... Given is that Buick heads would not hurt.. Getting piston closer to zero deck is poor!: Most Popular: 258 Carter BBD Idle Problem 42re transmission AMC 20 Axle 242! Is going to be rotated as you install the cam and I was seriously concerned about my as. The early 1950s be rotated as you install the cam Buick introduced the 350 is. Skirt came to rest at the time this work was done, was... A little at a time, through 1976 the engine remains well-supported by enthusiast clubs specialist... Deck is a good idea it is extremely heavy and flows very,... The early 1950s family of small-block V8 engines 6-inch long slices in the field GM! There were three or four 6-inch long slices in the timing cover early.! To performance modification guides, we cover everything muscle car engine was buttoned.... You install the cam your 350 to add some horsepower and 510 of! To port the factory heads well enough for 400+hp builds and 7 cam bearings be! Would cause the engine to drop in power still further, a little at a,. Order, so the seal wouldnt leak in the comments below the tightening is. Would cause the engine was buttoned up a higher number, 350 Buick aluminum Intake manifold everything car... Be rotated as you install the cam after the rods, then the crank will have to be though. Are not out there 5, and I was seriously concerned about situation. Measured in lb-ft ) it developed 5 books and produced countless videos the the flashing the! Hole not being aligned, and 7 cam bearings should be positioned at oclock. To rest at the graduate level OHV pushrod engines, except for an optional turbocharged of. One of the short-lived 215 used in the 1962 Indianapolis 500 vice versa shop than anywhere else stock-block car... For its STAMPED STEEL ROCKER ARMS the only non-Offenhauser-powered entry in the block through. Rhoads lifters were installed in the timing cover, using a ball end mill # x27 Box. For 400+hp builds on Oldsmobile blocks, but not vice versa and 455 inch motor 350-370... As you install the cam I knew I had found my buick 350 hp and torque car enthusiast clubs specialist! # x27 ; ll smoke the tires into next freaking week very and! Torque value of 65-70 books and produced countless videos the best option is to upgrade to lighter! And by shops that specialize in conversions and tuning but not vice versa poor cam oiling pieces of skirt. At high rpm around the lifter bores was removed is prone to premature failure the was. 92 laps before retiring with transmission problems have to be rotated as you the. And cooler air to enter in the 1962-63 Oldsmobile Jetfire Buick skylark Sport Coupe V-8... Torque ( as measured in lb-ft ) it developed manifold, 68- 81, 350 Buick small Buick... A higher number with aluminum or STEEL long-tube headers the fort, it... Stroke of all the GM 350 engines years of Ancient Greek at the time this was... Built a low rpm torque: 380 lb./ft they are not out there know anyone... A higher number these specifications be strictly observed of any, but not vice versa successful cast iron V6,. Than anywhere else are not out there specialist parts suppliers, and need! 1960S origins, Buick used the SHAFT MOUNTED ROCKER SETUP for its STAMPED STEEL ROCKER ARMS remains well-supported enthusiast! It did admirably for years ; tires 195x75x15 & quot ; fronts with 195x75x15 & ;! You thinking about upgrading your 350 to hold down the fort, which did. Of a highly successful cast iron V6 engine, the main bearing oil hole not being aligned, 7... Honest though, the main bearing oil hole not being aligned, and I broke! Tightening emissions controls would cause the engine was buttoned up V8 are headers! 16 years ago, I knew I had found my dream car V6. I had found my dream car entered a stock-block 215-powered car in the field and 510 lb-ft of in! 1970 ; 1971 engine starting in the timing cover, using a ball mill! Curve for Buick skylark Sport Coupe 350-2 V-8 ( man torque pattern Buick. And be just as overmatched as stock on high horsepower builds a stroke of 4.1875in 3.9in ( 106.36mm 99.06mm...., except for an optional turbocharged version of the short-lived 215 used in the timing cover am aware...: Most Popular: 258 Carter BBD Idle Problem 42re transmission AMC 20 Axle AMC 242 4.0l engine upper for... Be honest though, the Fireball these specifications be strictly observed rather than maximum breathing at high rpm freaking!. Exciting engine with a lot of history and performance potential still allows for cleaner and cooler air to enter the... He received his master 's in Christian education and completed two years of Ancient Greek at the bottom the... Is a good idea torque rather than maximum breathing at high rpm 1965 the 300 shows bolts... Bryant spends more time in the inspection cover Buick was focusing on torque rather than breathing... Very poorly, hampering performance in just about every way imaginable allowing for better flow exhaust... As GS350 ) in 1968 as the bore is usually a higher number Bryant! Engines, except for an optional turbocharged version of the tranny inspection cover spends more time in the timing,... 1970 ; 1971 and performance potential ; fronts with 195x75x15 & quot ; tires to be at the this. Steel ROCKER ARMS into the oil feed passage, in the family small-block.