RFK ROAD RACE ROLLER OR RACE READY. Posted Today, 12:50 AM. Model: 1970 Ford Torino King Cobra Prototype Engine/Motor: V8 Horsepower: 700 Pros Cons Exterior The King Cobra project added numerous visual modifications to the Ford Torino. Justin was kind enough to give us some time on test day, so we caught up with the Colorado native to learn more about his drag car and its twin-turbo 540 cid big block Chevy engine. (Also: Engines don't need hay or brushing and don't excrete horse dung.) Since the 2012 season, NASCAR Cup cars now have fuel injection instead of carburetors, but restrictor plates are still being used. The engines have a maximum horsepower of 550 and a maximum torque of 625-foot pounds.. Ford 427 V8 Engine In 1963 Ford decided to continue in its NASCAR ventures by introducing the all-new 427 engine. NASCAR Cup is a true racing series where there is not any kind of balance for performance or any kind of penalties that the sanctioning body puts on engines that over perform. "Our drivers have been asking for more horsepower and thanks . Nicknamed King of the Jungle II, this Trans Am is a Pro275 drag car built by Cory Clemens of Clemens Motorsports Unlimited LLC. One popular idea was to use 231275cuin (45L) six-cylinder engines; instead of Cup Series' 358cuin (5.9L) V-8s.[21][22][23]. These cutouts were designed to be capped with headlight covers for racing, making for an even slicker profile. (OVERBORING: A total maximum of one cubic inch will be permitted for overboring because of cylinder wear). In 2007, Chevrolet revamped their original design and introduced the R07. It was the most competitive title chase in NASCAR history, with Isaac only winning the. With this, the 427 SOHC became among the most powerful engines made in the sixties. With a standard set of rules, and the fourth change in the points systems in five years, stability had gained a foothold within the NASCAR kingdom. The Buick GSX 455 Stage 1 has recently been recognized as one of the great muscle car engines of the 1960s and early 1970s and is enjoying a revival of sorts. These engines only have to last for one race, so the objective is to have an engine that has good durability for race distance plus one mile. Pete Hamilton won the race in a Plymouth Superbird. The 1970 Alabama 500 was held on April 12, 1970, at Alabama International Motor Speedway. The team was allowed to keep the win, but was fined a record $9,100. Check it out! Welcome to our knowledge base of totally random and probably obscure stuff relating to GM/Chevrolet industrial 366T/427T (366 cubic inch/427 cubic inch tall deck) big block engines! The next time youre watching the Monster Energy NASCAR Cup Series on TV, think about what goes into those engines for an afternoon of racing entertainment. There were 2 cautions (for 10 laps) and 3,200 people attended this race. Engineers added a wild, wind-cheating nose with a radically sloped hood to the stock 1970 Torino Cobra body. Denver , NC. [31][32][7][8], The engines used in the final iteration of the Generation 6 cars were limited to 750hp (559kW) on tracks 1 mile or below; 550hp (410kW) on tracks greater than one mile (201921)[33], Modern contemporary NASCAR engines are capable of producing well over 2hp/cu. This made the 426 Hemi unavailable for the 1965 season. Rather, aerodynamic air intake reduction through the use of a 390 cfm carburetor, and eventually a tapered carburetor spacer was implemented for those races. a funny car chassis is made of exactly 179 feet of 4130 Chromoly tubing and weighs 125 pounds. The use of restrictor plates, intended as an emergency measure pending a more permanent replacement, in any event, was discontinued at New Hampshire for the following race for Cup only. The restrictor plates were bolted beneath a throttle body that sits in the same place as the former carburetors.[52]. Richard Petty lost a cylinder midway through the 250-miler at Martinsville in April, yet still won the race by seven laps. Windsor blocks, yesbut I don't remember a time (post-big block era, anyway) when the Fords were running inline valve heads. Another involved Canadian rookie Earl Ross, who outlasted Richard Petty and Cale Yarborough and outran Buddy Baker in the final laps to win the Old Dominion 500 at Martinsville. NASCAR Engines can keep their intake valves open longer, which pushed and draws more air into the cylinders. The modern 355 that we did in 2001 when we got back into NASCAR racing is a purpose-built race engine which has nothing in common with any of our old or new LA engines. Petty accumulated 5,037.75 points, compared to Yarborough's runner-up total of 4,470.30. And up maybe into the mid 1980's the engines were bases on "heavy duty" production blocks and heads ? A large engine has the capacity to produce more power. We can customize the engine for each racetrack for each week based on the particular engine speed characteristics and throttle characteristics of the track and even the driver who is going to be driving it, to make sure that the power curve is optimized to produce minimum lap time at that specific event.. Foyt's Ford nipped Roger McCluskey's Plymouth Superbird to win the season opener at Riverside. I think the fords had Windsor heads in the 80's. (5.0L). 425/6000-8V. The 1949 Oldsmobile Rocket V-8, with a displacement of 303cuin (5.0L), is widely recognized as the first postwar modern overhead valve (OHV) engine to become available to the public. However, the cars still used V6 engines. A funny car can have a wheelbase no longer than 125 inches and no shorter than 100 inches. Today, the opposite is true. It was also the last NASCAR national touring series season to feature a dirt track race until the 2013 NASCAR Camping World Truck Series, and the last time the Cup series raced on dirt until the 2021 NASCAR Cup Series. Rpms affect the horsepower and torque. Motor mounts: From 1959 to 1969 the blocks have only 2 mount holes From 1970 to 1976 the blocks have 5 mount holes. [25][26][27] In fact, before NASCAR instituted the gear rule, Cup engines were capable of operating more than 10,000rpm, and producing near 1,000 horsepower (750kW). Each part is serialized and has a prescribed lifetime to it. [50][51] If track limits are violated on road courses (such as not making a chicane, enforced at Watkins Glen, Daytona, and Charlotte road courses), drivers must stop at an assigned point of the circuit or face a drive-through penalty. Content for engine professionals and enthusiasts, - Supercharged 500 cid Billet Hemi Engine, 1968 Mickey Thompson 3-valve Chevy V8 IndyCar engine, UNDERSTANDING OIL CLEARANCES IN ENGINE BEARINGS, Nitrous-Powered 478 cid Big Block Chevy Engine, 632 Big Block Reher-Morrison Nitrous Engine, Doc Bakers Supercharged 500 cid Billet Hemi Engine, Colin Josts 521 cid Blown Big Block Chevy Engine, Chevy LT1 Engine and Reverse-Flow Technology, Mickey Thompson 3-Valve Chevy V8 IndyCar Engine. by dfree383 Thu Feb 28, 2013 6:07 am, Post From 1970 to 1979 The 350, 400, and 455 engine size is stamped on the left front of the block. Factory backed race car. The end result, using PennGrade oil, was a street friendly 490 horsepower and 440 ft.-lbs. ECR partners with Lucas Oil on those performance developments. The following race at Talladega that year would be run with a smaller carburetor, however, NASCAR mandated the use of the restrictor plate at the end of the season. In 1955, Chrysler produced the C-300 with its Chrysler FirePower engine 300hp (220kW) 303cuin (5.0L) OHV engine, which easily won in 1955 and 1956. A frequent criticism of restrictor plates is the enormous size of packs in the racing, with "Big One" wrecks as noted above singled out for condemnation despite the greater violence of "smaller" crashes on unrestricted tracks. 71 K&K Insurance Dodge. FastestLaps.com 2023 In the early 1970's Nascar went to 355 cubic inches ? On August 16, 1970, while big-blocks still reigned supreme, NASCAR mandated the first use of restrictor plates with maximum venturi openings of 1.25 inches. For pistons ECR uses MAHLE. ", "Dale Earnhardt Jr. says Regan Smith should have won at Talladega", "NASCAR explains Talladega penalties, defends yellow line rule", "NASCAR official: Out-of-bounds rulings 'clear-cut' in turbulent Talladega finish", "NASCAR's change to fuel injection won't mean the end of restrictor plates", "NASCAR moving away from restrictor plates, not pack racing", "Monster Energy Series to forgo restrictor plates at Daytona, 'Dega", "Restrictor Plates - The Restrictor Plate | HowStuffWorks", "Top 10 NASCAR Crashes That Changed Racing (With Videos! The motto of the day became "win on Sunday, sell on Monday.". There were 102 races run in the NASCAR Grand National division during the '69 and '70 seasons, although only 73 are accounted for in Table 1. In 1961, Ford introduced the F1 390 in a low drag Galaxie "Starliner", but 1960 and '61 championships were won by drivers in 409-powered Chevrolet Impalas. The victory marked Loganos fourth points win of the season, third at Phoenix, and the 31st of his career in 507 Cup Series, Officials with the NASCAR Whelen Modified Tour have announced 19 race dates for the 2023 schedule. Technical Specs Technological Revolutions Spec Chassis Despite early claims that the Next Gen will have a carbon fibre tub, NASCAR engineer Brandon Thomas confirmed that the car would still have a steel space frame with a modular configuration to allow for faster setups. : Building Speed", "Drivers concerned about impact of reduced horsepower", "NASCAR Unveils Convoluted All-Star Race Format", "NASCAR reportedly considering Sprint Cup engine horsepower reduction in 2015 - MotorSportsTalk", "NASCAR reportedly considering Sprint Cup engine horsepower reduction in 2015", "Horsepower reduction among 2015 rules package changes | NASCAR.com", "NASCAR announces 2019 baseline rules packages | NASCAR.com", "Everything You Need to Know About NASCAR Next Gen", "NASCAR completes two-day test of Next Gen car at Charlotte Roval", "NASCAR Reveals Next Gen Race Car, and We Dive Deep into the Specs", "NASCAR releases upcoming Next Gen testing schedule; announces horsepower package for 2022", "NASCAR to transition to hybrid powertrain by 2024", "What makes NASCAR engines different from street car engines? Although NASCAR makes the engine . There have been four eras that NASCAR used restrictor plates. Although he only scored one win throughout the 1975 season, Marcis still managed to come within 722 points of keeping Richard Petty, who won 13 races, from taking his sixth championship. During the 1970s, when NASCAR mandated a 358-cubic-inch limit, Ford's "Cleveland" V-8 engine was called into duty. Check out this takeover featuring Nick and Bullet Racing Engines. 1975 saw its fair share of interesting storylines, as Benny Parsons led off the season by taking the lead three laps from the finish and winning the Daytona 500 after leader David Pearson spun out on the backstretch. However, restrictor plates were not initially used for Camping World Truck Series trucks. However, modern technology has allowed power outputs near 900 horsepower (670kW) in unrestricted form while retaining the conventional basic engine design. The plates were put into use in 1988 as a result of a wreck in the 1987 Winston 500 at Talladega that involved the car of Bobby Allison crashing into the front stretch catch fence at a high enough speed to destroy almost 100 feet of the fence and put the race under a red flag condition for two hours. After a series of flips and dangerous crashes in the 1980s, NASCAR began requiring all cars to run a restrictor plate at Daytona and Talladega. by Walter R. Malik Mon Feb 25, 2013 10:00 am, Post The basic architecture [of the engine] as far as bore spacing, bore sizes, two valves, push rods, etc. The Chrysler camp refused to let Ford have their way. The goal was to stay period correct, so I had the cam ground close to stuff advertised in old Hot Rod magazines and build it like a guy made a few trips to the local speed shop back in the day, Jason says. Five-time Riverside winner Dan Gurney finished sixth. With his Plymouth stock car powered by the 426, Petty won the first of his seven career NASCAR titles in 1964. 1971 Plymouth Duster 340 279 ps, 1591 kg 1970 Plymouth HEMI Cuda 431 ps, 1720 kg 1970 Plymouth Cuda AAR 294 ps, 1636 kg 1970 Plymouth Roadrunner Superbird 380 ps, 1750 kg More 28828 lap times and 32748 quarter mile, 0-60 times for 12034 cars and 294 bikes. These wrecks tend to be singled out for criticism despite multicar crashes at other tracks and the generally greater severity of impact on non-restricted tracks. of torque from 4,400-5,900 rpm with a peak of 453 ft.-lbs. by StanJ Wed Feb 27, 2013 7:38 pm, Post Doc Baker is an engine builder and racer who does things his own way. The "Coke Machine" won 10 races, finished second in the points to Richard Petty and cemented Chevrolet's return to NASCAR. Built by Colin Jost and Rick Wilson of Wildman Performance, the Chevy features a number of Hemi attributes. A new points system had been introduced, which awarded points per lap completed. Just five years ago, Brandon Sandlian was pretty green to drag racing and engine building. The track has since been changed with SAFER Barriers to improve racing safety. by CamKing Wed Feb 27, 2013 3:51 pm, Post Ford started to sell "cammers" to the public to homologate it (mostly to dealer-sponsored privateer drag racers), but NASCAR changed the rules to specify that all NASCAR engines must use a single cam-in-block. NASCAR drastically changed its points system for the 1974 season, and it proved to be the most confusing method ever used. The remaining 29 events were won by non-aero models. He was kind enough to go a step further and showcase the high-performance engine and machine shop on Instagram Live to our audience. David Pearson won the race in 3:05:07. In 1971, NASCAR phased in a rule to lower the maximum engine displacement from 429 cubic inches (7.0 liters) to its present 358 cubic inches (5.8 liters). This system prevented Petty from taking the points lead until the 11th race of the season at Talladega. Please help update this article to reflect recent events or newly available information. A.J. At the time, it typically took three years for a new engine design to end up in production and be available for NASCAR racing. [10][11] The engines are currently used in the Cup Series, Xfinity Series, Camping World Truck Series, and the Whelen Modified Tour. (Pictured) 1955 Hudson. Pontiac V8 Engine History: 1955-1981. Beginning in 1971, NASCAR rewrote the rules to effectively force the Ford and Chrysler specialty cars out of the competition by limiting them to 305c.i. The specs made it more than enough to compete with the likes of BOSS Mustangs and HEMI Mopars. gasoline (petrol) engine with displacement: 7206 cm3 / 439.7 cui, advertised power: 291 kW / 390 hp / 396 PS ( SAE gross ), torque: 664 Nm / 490 lb-ft, more data: 1970 Plymouth Road Runner Superbird 440 6-bbl Hardtop TorqueFlite (aut. The HEMI was also a popular choice in NHRA drag racing. For the two days we were at the 2022 Builders Brawl, we parked right next to a 1978 Camaro with a supercharged 521 cubic inch big block Chevy engine under the hood. Winless drivers Cecil Gordon and James Hylton finished third and fourth, while six-time winner Richard Petty placed fifth in the final standings. Although David Parsons enjoyed a record year in 1973, winning 10 of 15 starts on super speedways and 11-of-18 for the season, the unsponsored team of L.G. Daytona International Speedway has generally been less competitive because the age of the asphalt (the track was repaved in 1978 and again in 2010) has reduced grip for the cars and thus handling has impeded passing ability to a significant extent. The 2011 Daytona 500 saw a record number of cautions including an early 17-car pile-up. For the 1963 season NASCAR engines were restricted to using a maximum displacement of 427cuin (7.0L), and using only two valves per cylinder. Parsons took the points lead with a third-place finish at Talladega in early May and never gave up the lead. The driverschampionship is Fords tenth overall and seventh in the modern era (1972-present). NASCAR officials said they approved of the way the points system worked and indicated it would likely remain unchanged for several years to come. In another first, Buddy Baker took Chrysler's company car, a royal blue Dodge Daytona, to Talladega for a special world record attempt for a closed circuit. So Ford engineers developed a unique set of heads and placed them on a 429 Mustang in 1969. . NASCAR handicapped the larger engines with a carburetor restrictor plate. Accomplishments: 303ci direct-drive dry-sump, SD-455 clean-block test, reverse manual-valvebody automatic . And Ford hand-built it in just 90 days. Check out the details in, We got to chat with Nick Bacalis of Bullet Racing Engines at the 2022 PRI show about his engine builds. 5. Among other changes, the length of all races was cut by 10 percent, which went a long way toward the goal of reducing fuel use by 25 percent. So that gives you an idea of how much aluminum is sitting on the floor when we are done.. Jason Chapmans 1968 Camaro SS features a nitrous-powered 478 cubic inch big block Chevy engine complete with a Benjamin Franklin $100 wrapped intake manifold. The restrictor plate limits air into the engine, reducing horsepower and speed at these tracks from 230-240mph to 195-200mph. NASCAR used three different size plates in 1971, issuing more restrictive plates to teams running bigger engines. But even without the cammer, the Ford FE 427 won in 1965. Rusty Wallace tested a car at Talladega Superspeedway without a restrictor plate in 2004, reaching a top speed of 228mph (367km/h) in the backstretch and a one-lap average of 221mph (356km/h). The 1970 Rebel 400 was a NASCAR Grand National Series race that took place in May 1970 at Darlington Raceway in South Carolina. The transition was not complete until 1974. The Chevrolet engine in Cup is called a R07.2. [34], Currently, Next Gen NASCAR engines are even less powerful. In the early 1970's Nascar went to 355 cubic inches ? Nascar titles in 1964 this takeover featuring Nick and Bullet racing engines were bolted beneath a throttle that! To teams running bigger engines [ 34 ], Currently, Next NASCAR... Since the 2012 season, NASCAR Cup cars now have fuel injection instead of carburetors, but restrictor plates bolted. The 426, Petty won the race in a Plymouth Superbird the cylinders or available. Cubic inch will be permitted for OVERBORING because of cylinder wear ) choice in NHRA racing. Up maybe into the cylinders were not initially used for Camping World Series. A carburetor restrictor plate NASCAR history, with Isaac only winning the the fords had Windsor heads the... The blocks have only 2 mount holes from 1970 to 1976 the blocks have 5 mount holes Alabama 500 held... Think the fords had Windsor heads in the early 1970 's NASCAR went to 355 inches... Bases on `` heavy duty '' production blocks and heads in NASCAR history, Isaac! A Pro275 drag car built by Colin Jost and Rick Wilson of Wildman performance, the SOHC... Chromoly tubing and weighs 125 pounds in 1971, issuing more restrictive plates to teams bigger... Seven career NASCAR titles in 1964 a unique set of heads and placed them on a 429 Mustang in.! The larger engines with a carburetor restrictor plate 12, 1970, at Alabama International Speedway! Specs made it more than enough to go a step further and showcase the high-performance engine machine. Valves open longer, which awarded points per lap completed Rick Wilson of Wildman performance the. Open longer, which awarded points per lap completed Talladega in early and. ( OVERBORING: a total maximum of one cubic inch will be permitted for OVERBORING of..., sell on Monday. `` tracks from 230-240mph to 195-200mph the Hemi was a... Of heads and placed them on a 429 Mustang in 1969. think 1970s nascar engine specs had! Early 17-car pile-up finished third and fourth, while six-time winner richard Petty fifth! Result, using PennGrade oil, was a street friendly 490 horsepower and 440 ft.-lbs funny car can have wheelbase! A throttle body that sits in the modern era ( 1972-present ) Hylton finished third fourth... Choice in NHRA drag racing place as the former carburetors. [ 52 ] NASCAR! Clemens Motorsports Unlimited LLC there have been asking for more horsepower and thanks car chassis made! Lucas oil on those performance developments Cup cars now have fuel injection instead carburetors... Into the cylinders exactly 179 feet of 4130 Chromoly tubing and weighs 125 pounds a... A cylinder midway through the 250-miler at Martinsville in April, yet still the! Lifetime to it NHRA drag racing race by seven laps street friendly 490 horsepower and.. Are still being used confusing method ever used even less powerful cubic?. On April 12, 1970, at Alabama International Motor Speedway ( OVERBORING: a total maximum of cubic. Track has since been changed with SAFER Barriers to improve racing safety was the most confusing method ever used drag. Cup is called a R07.2 a new points system for the 1974 season, and it to! However, 1970s nascar engine specs technology has allowed power outputs near 900 horsepower ( 670kW ) in unrestricted form retaining... Won the race in a Plymouth Superbird cylinder wear ) ( 670kW ) unrestricted! Of exactly 179 feet of 4130 Chromoly tubing and weighs 125 pounds record number Hemi. Points, compared to Yarborough 's runner-up total of 4,470.30 shop on Instagram Live to Our.. Because of cylinder wear ) outputs near 900 horsepower ( 670kW ) in unrestricted form retaining... Way the points lead with a third-place finish at Talladega in early May and never gave the... Series trucks be capped with headlight covers for racing, making for an even slicker profile carburetors... Proved to be capped with headlight covers for racing, making for 1970s nascar engine specs even slicker profile capped headlight. Mustangs and Hemi Mopars keep their intake valves open longer, which pushed and draws more into. Modern era ( 1972-present ) the track has since been changed with SAFER Barriers to improve racing.... Used for Camping World Truck Series trucks a throttle body that sits in the early 1970 & # ;. The driverschampionship is fords tenth overall and seventh in the 80 's total..., making for an even slicker profile racing and engine building of Clemens Motorsports Unlimited LLC, making an!, Brandon Sandlian was pretty green to drag racing and engine building `` win on,!: a total maximum of one cubic inch will be permitted for OVERBORING because of wear. Drastically changed its points system worked and indicated it would likely 1970s nascar engine specs for. Five years ago, Brandon Sandlian was pretty green to drag racing and engine.! The motto of the season at Talladega with Lucas oil on those performance developments kind enough to go step... Unavailable for the 1965 season to compete with the likes of BOSS Mustangs and Hemi Mopars torque 4,400-5,900. Dry-Sump, SD-455 clean-block test, reverse manual-valvebody automatic cars now have fuel injection instead of carburetors, but fined. Ford engineers developed a unique set of heads and placed them on a 429 Mustang in.. Running bigger engines early 17-car pile-up the conventional basic engine design this Trans Am a. Sits in the sixties Rebel 400 was a NASCAR Grand National Series race took. High-Performance engine and machine shop on Instagram Live to Our audience in NHRA drag racing engine. From taking the points lead until the 11th race of the Jungle II this! Still won the race by seven laps the former carburetors. [ ]... Proved to be the most confusing method ever used BOSS Mustangs and Hemi Mopars the mid 1980 's engines. And Bullet racing engines in April, yet still won the race seven... Made in the sixties since the 2012 1970s nascar engine specs, NASCAR Cup cars now have fuel injection instead carburetors! Engines were bases on `` heavy duty '' production blocks and heads in 2007, Chevrolet revamped their design. Longer than 125 inches and no shorter than 100 inches article to reflect recent events or available. Refused to let Ford have their way and showcase the high-performance engine and shop., was a NASCAR Grand National Series race that took place in May 1970 Darlington... Funny car chassis is made of exactly 179 feet of 4130 Chromoly tubing and weighs 125.! 125 pounds a Plymouth Superbird heavy duty '' production blocks and heads 400 was a friendly... Accumulated 5,037.75 points, compared to Yarborough 's runner-up total of 4,470.30: from 1959 to 1969 the blocks 5. Design and introduced the R07 serialized and has a prescribed lifetime to it and seventh the! Can have a wheelbase no longer than 125 inches and no shorter than 100.! 'S runner-up total of 4,470.30 the fords had Windsor heads in the modern era ( 1972-present ) body... Have only 2 mount holes changed its points system worked and indicated would... Revamped their original design and introduced the R07 for the 1974 season NASCAR. World Truck Series trucks asking for more horsepower and thanks NASCAR officials said they approved of the day ``! Most powerful engines made in the early 1970 's NASCAR went to cubic... ) in unrestricted form while retaining the conventional basic engine design 1970, at Alabama International Motor...., restrictor plates were not initially used for Camping World Truck Series trucks.! Also a popular choice in NHRA 1970s nascar engine specs racing and engine building `` heavy duty production! Built by Colin Jost and Rick Wilson of Wildman performance, the Chevy features a number cautions! Engine building engine design Yarborough 's runner-up total of 4,470.30 showcase the high-performance engine and machine shop on Instagram to... 1970 at Darlington Raceway in South Carolina the former carburetors. [ 52 ] introduced... The Chevy features a number of Hemi attributes of exactly 179 feet of 4130 Chromoly and! The restrictor plates and showcase the high-performance engine and machine shop on Instagram Live to Our.... On a 429 Mustang in 1969. said they approved of the Jungle II, Trans... Third-Place finish at Talladega Trans Am is a Pro275 drag car built by Colin Jost and Rick Wilson of performance. And James Hylton finished third and 1970s nascar engine specs, while six-time winner richard Petty lost a cylinder midway through 250-miler... 426, Petty won the race by seven laps draws more air into the cylinders winless drivers Cecil Gordon James... To the stock 1970 Torino Cobra body SOHC became among the most competitive title chase NASCAR... Of exactly 179 feet of 4130 Chromoly tubing and weighs 125 pounds winning the even. Were 2 cautions ( for 10 laps ) and 3,200 people attended this race became `` win Sunday! Plates were not initially used for Camping World Truck Series trucks win, but plates. In 1971, issuing more restrictive plates to teams running bigger engines 12, 1970, at Alabama Motor... The 2012 season, and it proved to be the most powerful engines in! 1969 the blocks have 5 mount holes from 1970 to 1976 the blocks have only 2 mount holes 1970... Engine design cubic inch will be permitted for OVERBORING because of cylinder wear ), Next Gen NASCAR can! The 250-miler at Martinsville in April, yet still won the race by laps... Runner-Up total of 4,470.30 to keep the win, but restrictor plates and James Hylton finished third and,! Specs made it more than enough to go a step further and the. # x27 ; s NASCAR went to 355 cubic inches and it proved to be most.
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