2.0L Non-Interference The engine could be a 1.8- or 2.0-liter engine. If a valve and piston collide, serious engine damage will occur. This is because vehicle manufacturers aim to make engines increase their efficiency. However, there are a few notable differences between the Coyote in the F-150 and the Coyote in the Mustang. This is because repair options vary, depending on the type or severity of the damage. Oil leaks are one of the most common problems with the 4.0L V6 Ford engine. A Ford interference engine is an engine where one or more of the valves protrude into an area through which the piston may travel meaning that if something goes wrong with the timing belt or chain, serious engine damage could occur as a result of a collision between valve and piston. Yes, all 289/302/351 engines that I know of are definitely interference. The cookie is used to store the user consent for the cookies in the category "Analytics". where a "sealed" engine is necessitated PUSHROD CRATE ENGINES // 302. It sounds a lot like when. Is the Ford EcoBoost 4.6L an interference engine? 5.0Resto, SVE, LMR are registered trademarks of Latemodel Restoration Supply, Inc. Ford, SVT, Special Vehicle Team, Ford Mustang, Ford Lightning, Mach 1, Mach-E, Shelby GT500, GT350, GT350R, New Edge, Boss 302, 5.0, Cobra R, Fox Body Mustang, Ghia, Turbo GT, SVT Cobra, Cobra Jet, Bullitt, California Special, Cobra, GT, V6, S197, SN95, S550, S650, Dark Horse, F-Series, F-150, Triton, F150 Raptor, Raptor, EcoBoost, Bronco, Bronco Sport, Badlands, Big Bend, Black Diamond, Outer Banks, Wildtrak, and Sasquatch are all registered trademarks of Ford Motor Company. 3.0L SOHC 12 Valve Engine Non-Interference With Ford, generally anything with a chain is gonna be interference. Ford Escape Abs Sensor Problems Cause & Fix, Can You Change Rod Bearings With Engine In Car, Ford Econoline Door Lock Problems (Full Guide), Ford E250 Transmission Problems (You Need To Know), How to Improve Engine Sound With A Camshaft Lobe Lift. Technicians also have service manuals to check if the vehicle model features an interference or a non-interference engine. It is known for its high performance and reliability. $94,900. 1.6L 124 Series Interference If the piston never gets far enough to reach the valves, that's a free-running . Saleen is a registered trademark of Saleen Incorporated. On the left is a 1970 vintage 302 harmonic dampener with a 28-ounce offset balance. The short block featured a redesigned forged piston with a 30-thousandths deep dish and valve reliefs which netted a 9:1 compression ratio. it had 220k before it blew but now im selling parts of which is still good which is quite a bit of them. For example, the 2019 Ford Taurus 3.5L option has a timing chain while the 1995 Ford Taurus 3.0L DOHC option has a timing belt. 1.6L SOHC 8 Valve Engine (Tracker) Non-Interference If youre having trouble starting your vehicle or if its running rough, it could be due to ignition coil failure. The Triton is a 5.4-liter naturally aspirated V8 engine from Ford Motor used to power full-size trucks and sport utility vehicles like the Ford F-150, Ford Expedition and Lincoln Navigator.Ford 5.4L Triton Engine Overview. Tools Bible is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising & linking to Amazon properties. The 302 Cleveland is a (4.9L) engine that was exclusively made in Australia from 1971 to 1982 (see Ford 335 engine ). Additionally, they prevent the piston from hitting the valves. What is causing the plague in Thebes and how can it be fixed? 2.5L V6 Interference The engine block and cylinder heads were cast iron. Per the OEM Manuals, the 4.6L is an interference engine. Does your car have an interference or non-interference engine? 1.8L V6 Non-Interference The fastest Ford on Earth is the GT supercar, with an incredible 740HP. In thinking about this situation, the 302 might go either way on the freewheeling issue. Instead, you can have the cylinder head rebuilt and the bent valves replaced. First, you can check your owners manual. It refers to a 4-stroke internal combustion piston engine wherein the valves are in a completely open position. The 4.2-liter engine, fortunately enough for enthusiasts, was only around for two model years which were 1980 and 1981. Does the 4.6 have cam phaser problems? 1.6L SOHC Non-Interference On the other hand, interference engines have a short space between the pistons and valves and when the . Be careful not to damage the gasket surfaces when doing this. Interference Engines - Complete List Unfortunately, this scenario can damage the valves. The 4.0 SOHC is a reliable engine that is known for its high performance and fuel efficiency. The video below will also help you determine if your car has a timing belt or chain. Are there any Honda engines that are non interference? However, you may visit "Cookie Settings" to provide a controlled consent. The 4-barrel carb came with a redesigned automatic choke and was rated at 165 horsepower, which was 10 less than the manual. 7.3s interference or non-interference engines. Ask. A single-snorkel air-cleaner was used and new for 1979 was an aluminum water pump and a single v-belt accessory drive belt. 3.0L DOHC Interference But it did have some issues for a number of drivers. The "C8OE-6015-A" indicates a 302 block. An interference engine is one that has insufficient clearance between the valves and pistons if the cam stops turning due to a broken timing belt. Moreover, its valves are completely open and extend into areas through which the piston can travel. So, you have to expect that repair will be costly. The Ford 5.0 Modular "Coyote" is an all-new 5.0-liter gasoline V8 engine, which replaced the previous 4.6L/5.4L Modular versions in the Ford Mustang GT and Ford F-150 for the 2011 model year. California-bound cars saw the edition of a mass-air flow system in 1988, but all other cars were still speed density. For all of its minor quirks, the Coyote-equipped generation is one of the best used Mustangs available. 2.2L Diesel Interference The last non-crasher belt drives I know of were Ford Ranger 2.2/2.5's. There's not many non-interference engines built in the last decade. 2.0L DOHC (Probe) Interference 2.0L Diesel Interference 2.0L SOHC Gasoline (Escort, Focus & Tracer) Non-Interference 2.0L SOHC Gasoline (Capri, Pinto & Ranger) Non-Interference 2.2L Interference 2.3L Diesel Interference 2.3L SOHC Gasoline Non-Interference 2.4L Diesel Interference 2.5L SOHC 4 Cyl. Eliseo Carrillo (7) offer up reviews. This means that if the timing belt were to break, the valves and pistons would collide, causing major damage to the engine. Is the 302 in / 5.0 Liter an interference engine? Late-1985 CFI-equipped engines received a bump in power to 180 horsepower and 260 lb-ft of torque. What are some interference engines made by Ford? So, when the timing sprocket or chain breaks, the cam stops, and the pistons still moving at speed, start hitting opened valves. It has a cast iron block and aluminum heads and uses regular unleaded gasoline. 940 SOHC Non-interference Does anybody know if the 460's in 1975 were interference engines? 2.7L DOHC Interference The cookies is used to store the user consent for the cookies in the category "Necessary". Ford replaced the 5.4 V-8 in 2010 with the 411-horsepower 6.2-liter V-8, although the 2011 Ford Shelby GT500 still used the four-valve 5.4 V-8. Belt driven engines like some of the 4 cylinders are not interference, but the valves will still hit if the belt breaks at 6000 rpm (Zetec for example). Advertising - 2.5L V6 Non-Interference We also use third-party cookies that help us analyze and understand how you use this website. Ford used cast iron for the engine blocks and cylinder heads throughout the production of the 302 in Fox Body and SN95 Mustangs. If there is no gap, it is an interference engine. The cylinder heads were also revised and had a casting number of E7TE. All Honda engines are Interference except 3.0L & 3.2 which are Non-Interference. 2.0L Brava, Spider Interference, 1.3L Non-Interference It reaches speeds of 200MPH with ease. But opting out of some of these cookies may affect your browsing experience. 2.5L Non-Interference Ford Escort. 5.7 Hemi Problems [Dodge 5.7 Hemi Causes and Solutions]. The lists of interference engines provided in this article include the following, among others: Read on to learn more about the different automotive brands with interference and non-interference engines, the impact of interference engines on your vehicles, and more. If there isnt much clearance, its likely that your engine is interfering. Advertisement cookies are used to provide visitors with relevant ads and marketing campaigns. 3.2L Interference Late Model Restoration has no affiliation with Ford Motor Company, Roush Enterprises, Eaton, or Saleen. 2.3L 4 Cyl. 3.0L 944 Interference Follow me on. Unlike the previous years where there were two versions of the 302, there was now only one iteration of 5.0 with the addition of SEFI. Registered. SOHC Non-Interference, 1.3L DOHC Interference These leaks can cause a loss of power and decreased fuel economy. Life is so much nicer with the engine on the stand or as we did it, resting on the floor with a 4X4 under the high point of the pan, then tilt the engine back onto long tranny bolts. Your email address will not be published. As we said it was lighter, more powerful, and more fuel efficient. Trucks/SUVs, yes. The engine codes include ES2, ES3, A18A1, A20A1 and A20A3 in the 1984 through 1989 Accord and Prelude. 3.0L Inline 6 (Except 1998 2JZ-GE) Non-Interference On the contrary, a non-interference engine does not allow the piston to travel into any area where the valves open. Just clear tips and lifehacks for every day. (B2300) Non-Interference 2.5L 4 Cyl. Website content, text, & images Copyright 2023 LMR.com - All Rights Reserved. Vehicle Transmission Drive Wheels [email protected] RPM Torque (lb-ft) @ RPM; Ford Edge Sport (2011 - 2014) Six-speed automatic: AWD: 305 @ 6,500 rpm: 280 @ 4,250 rpm There is no interference in the Coyote V-8 engine, which has 302 ci. 1.8L 7AFE, 4AFE, 4AF Non Interference 16 valve diesels Interference Posted 5 months ago in San Antonio, TX. The year Ford underrated its 302s in preparation for the complete Mustang redesign in 1994. Still running strong! It is a V6 engine that features four valves per cylinder and dual overhead cams. Best Tuner for 6.0 Powerstroke [Review and Buying Guide]. BluePrint Engines Ford 306 C.I.D. Jun 15, 2012. It reaches speeds of 200MPH with ease. The timing belt or chain is responsible for keeping the pistons and valves in sync with each other; thus, if this component fails or stretches, it can cause the pistons to strike the valves. I hope this low performance, (185 HP @ 3800 rpm) engine uses dished pistons and low lift figures on the valves, while the Mustangs 302 HO (?) B230Non American Interference What Is a Hemi Engine? The standard 5.0 ratings in the LX and GT were lowered to 205 horsepower and 275 lb-ft of torque. By clicking Accept All, you consent to the use of ALL the cookies. Non-interference engines on the other hand do not share the same powertrain components with normally aspirated, non-interference. Dec 26, 2011. Save. If your engine interferes, it means that the valves and pistons share the same space in the cylinder. 1.8L Interference Finally, another common problem with this engine is head gasket failure. 3 Is the 4.0 L SOHC an interference motor? Another way is to find out your cars engine model and check its engine type using the lists below. The 302 is freewheeling. Can You Drive a Long Distance With a Plugged Tire? The Ford Mustang comes with one of three engines a 4.0-liter V6 that makes 210 horsepower and 240 pound-feet of torque, a 4.6-liter V8 that makes 300 horsepower and 320 pound-feet of torque and a 5.4-liter V8 that makes 500 horsepower and 480 pound-feet of torque. When to change the timing chain on a non interference engine? 1.6L DOHC (4A-GE & 4A-GZE) Non-Interference 2.0L SOHC Non-Interference What characteristics allow plants to survive in the desert? These cookies will be stored in your browser only with your consent. Drop-In Ready Long Block Crate Engines BP3060CTCD Engine Assembly, Crate Engine, Ford, 306, Small Block, Each Part Number: MLL-BP3060CTCD ( 11 ) Estimated Ship Date: Monday 3/6/2023 Free Shipping $6,919.00 Add To Cart Compare Wish List Primarily, the 5.0L V8 in the F-150 received a lower compression ratio (10.5:1), intake camshafts with less duration, cast iron exhaust manifolds, and revised cylinder . Pretty rare for a timing chain to flat out break. Performance cookies are used to understand and analyze the key performance indexes of the website which helps in delivering a better user experience for the visitors. The timing chain on the 4.0 SOHC engine is made of metal links that are connected to each other with rivets. Non-Interference All Honda engines are interference except 3.0L & 3.2 which are Non-interference 1.8L 4 Cyl. But what exactly is an interference engine? There are several reasons why the Ford 4.0 V6 is considered a good engine. XC90s Interference, Greg Macke is a car blogger and author of My 7 Secrets to Buying a High Quality Used Car. A non interference, or free wheeling engine is an engine where the pistons will not contact any open valves at any time. Its twin snorkel design drew cool air through the inner fenders via flexible rubber tubes. The cookie is used to store the user consent for the cookies in the category "Performance". At the same time, the valves will need to have a wider opening to improve airflow. 1.8L Non-Interference A car engine that runs on water? They have incorporated some safety precautions. 4.19 out of 5 stars. With Ford making the switch to the 4.6-liter modular engines in 1996 for the Mustang, they did produce the 302 up until 2001 which was an engine option in the Ford Explorer and standard in the Mercury Mountaineer. Can I just replace my timing chain or is there potential valve damage? The Ford 4.0 engine is a V6 engine that was first introduced in the 2006 model year. The new 5.0L V8 option was developed with the target to compete with the GM 6.2L V8 engine and the new Chrysler 6.4L Hemi. 4.0L Interference See more at: https://carbuyingsupport.com/, Your email address will not be published. 1.6L DOHC Interference Your email address will not be published. I Got A 1996 Ford 5.0 302 Engine Out Of A Explorer U Can Hear It Run Its All.complete With Transmission Good For A Hot.rod. 1.6L SOHC Non-Interference The Ford small-block V8 design work originally began in 1960. Both engines are available with either manual or automatic transmissions. The first engine debuted in the form of a 221 cubic-inch small block that was offered in the Ford Fairlane. $5 Off Your $100 Mobile App Purchase . Moreover, you can bring your vehicle to a car care shop for a leak-down cylinder test or a valve-gap check. In most cases, there is a bent valve if there is a large valve gap. My #8 intake valve makes a ticking/tapping noise. They include wiring diagrams and technical service bulletins. Is Ford 2.0 an interference engine? The Ford 4.6 engine came with a plastic intake manifold from the 1996 until 2001 model years. It was also used in trucks. 1-8. . The original Escort was powered by a 1.6L 4 cylinder, 69 horsepower engine with a two barrel carburetor. . When the engine is running, the valves open and close to allow air and fuel into the cylinder and exhaust out. 3.2L Interference I've never done this before so reading/watc. On December 6, 2000, a ceremony was held at Cleveland Engine Plant One to celebrate the assembly of Fords final five-liter, pushrod V8 engine. For this reason, its important to keep up with the recommended maintenance schedule for your 4.0L Ford engine, which includes replacing the timing belt every 60-90 thousand miles. The Zetec IS an interference engine, give that regular pistons will hit the valves. Which is Better Interference Or Non-Interference Engine? This cookie is set by GDPR Cookie Consent plugin. Thus, this way, they will be able to check if there are damages inside the cylinders. However, they are not as durable or efficient as interference engines. I am wondering if the noise I am hearing near the front of the engine is the timing chain slapping the side of the timing cover. 2.2L SOHC Non-Interference Factory diagrams are much harder to read. Required fields are marked *. Better yet, on your next oil-change schedule, ask the mechanic about it. 3.0L Inline 6 (1992-97) Non-Interference Is a 302 Ford an interference engine? 3.0L & 3.2L SHO Non-Interference A used but running unit will already do the job. Other uncategorized cookies are those that are being analyzed and have not been classified into a category as yet. These cookies track visitors across websites and collect information to provide customized ads. This cookie is set by GDPR Cookie Consent plugin. Is a 2003 Ford Focus an interference engine? 2.3L Interference The engine has seen some revisions since then, the most recent being in 2018. An "interference" engine is an engine which the failure of the timing chain would cause damage to either the pistons or the valves, due to. The cookie is set by the GDPR Cookie Consent plugin and is used to store whether or not user has consented to the use of cookies. 5.4L 928 Interference, DOHC Interference This can cause serious damage to the engine. 1.8L Diesel Interference Interference engines are typically more efficient than non-interference engines because they allow for a significantly higher compression ratio. Find many great new & used options and get the best deals for 289 302 Engine Rebuild Kit w/ Flat Top Pistons FITS 1964-1983 Ford 5.0L 4.7L V8 at the best online prices at eBay! 3.4L Non-Interference If they are interference type engines, Id pay close attention to the belt change intervals! Find FORD 5.0L/302 Ford small block Windsor Crate Engines and get Free Shipping on Orders Over $99 at Summit Racing! Unplug the electrical connections to the starter motor and alternator. 2.1L Diesel Interference Make offer. The camshaft was taken from a 351 Windsor engine that Ford used in their Torino and a double-roller timing chain replaced the previous silent-link chain. 1.8L Gasoline Non-Interference The result is usually catastrophic engine failure. 2.0L DOHC (Probe) Interference Part Number: HPE-HP99F. This cookie is set by GDPR Cookie Consent plugin. 4.3L Interference In this video, Landan goes over everything you need to know about the small block Ford 302 engine for 79-95 Mustangs. Modern interference engine models have bigger valves that open up to the combustion chamber. 4.7L Interference, 1.5L Non-Interference 3.0L SOHC Interference, Villager 3.0 Non-Intereference When to know if your car has an interference engine? To increase the compression ratio, the volume of the combustion chambers will have to be minimized. Just broken in good. However, if youre looking for better fuel economy, the SOHC version may be a better choice. The torque output is 250 lb-ft at 4250 rpm. This version of the 302 was now rated at 210 horsepower and 270 lb-ft of torque. The 4.0 OHV is a reliable engine, but it is known for consuming oil and developing valvetrain noise. Just clear tips and lifehacks for every day. And if you bring your vehicle to a car care shop, the mechanic will use a borescope camera to assess your vehicle. The 4.0 engine is notable for its high power-to-weight ratio and low fuel consumption. 3.3L Interference, 1.0L Interference Terms of Service - The F150 5.0L engine has a displacement of 3.9L while the F150 6.2L has a displacement of 4.6L, as well as the 6.8L and 6.9L models with a displacement of 5.4L and 5.5L, there is also the 6.7L with a displacement of 6.8L, 6.9L with a displacement of 7.0L, and the new Power Stroke 9.0L which has a displacement of 9.3-liters. Most Popular for You: 11 Salient Questions to Ask When Buying A Used Car well i guess the 302 i bought lived a full life. This can cause major engine damage and is why its so important to keep the timing belt in good condition and replace it every 60,000 miles or so. With Ford, generally anything with a chain is gonna be interference. Yes! Support the engine with a jack and remove the drive belts. Bubbabud 2011 XLT SCAB Ecoboost, The following errors occurred with your submission, Ford F150 Forum - Community of Ford Truck Fans. This cookie is set by GDPR Cookie Consent plugin. 1.6L Non-Interference 2.4L Diesel Interference If you do not have a Ford Performance Account and would like to create one, . V8 engine 4.0L 740I Interference, All except SLX Interference Welcome to the forum.the Ford 302 in a truck app. With Ford, generally anything with a chain is gonna be interference. In this video, LMR goes over everything you need to know about the small block Ford 302 engine for 1979-1995 Mustangs. The following lists will allow you to determine whether your vehicle has an interference engine or not. They should have cut reliefs in the pistons for valve clearance of course. The 4.0L V6 Ford engine has been around for a while, powering everything from the Explorer to the F-150. 2.0L SOHC Gasoline (Capri, Pinto & Ranger) Non-Interference 6XXX six-cylinder engines Interference If the piston travels far enough in the cylinder to actually hit the open valves, that's an interference engine. This bumped the compression ratio to 9.2:1. In the non-interference, the distance between the pistons and valves is quite large. The 4G63 is an interface engine. Lastly, these valves extend to any area through which the piston may travel. Ford Interference engines list Ford Non Interference Engines list Ford Interference engines list 2.0L DOHC (Probe) Interference 2.0L Diesel Interference 2.0L SOHC Gasoline (Escort, Focus & Tracer) Non-Interference 2.0L SOHC Gasoline (Capri, Pinto & Ranger) Non-Interference 2.2L Interference 2.3L Diesel Interference Simply as an Amazon Associate, we earn from qualifying purchases. To this day, the small block 302 is still strongly supported by aftermarket components. However, in general, interference engines are more durable and efficient than non-interference engines. S80 Interference The return of the 302 in the Mustang coincidentally came in 1982 which was the year the GT model returned to the line-up. Stock, it may live, if you have larger valves or more cam lift, it will hit for sure. The Ford 4.0 L V6 is a popular engine choice for many Ford vehicles. If you suspect ignition coil failure, its best to replace all coils at once rather than just one at a time. The 5.0L became available in the AWD Ford Explorer in 1997. Why Does My F150 Idle High When I Start It? In an effort to avoid the federal governments gas-guzzler tax in 1986, the Ford engineers developed their sequential electronic multipoint fuel injection with speed density management. The engine is called an interference engine for a purpose; because the piston interferes with the completely open valves and occupies the same space. Non-Interference Fords interference diesel engines include 2.0-liter, 2.3-liter and 2.4-liter units. 4.0L Interference This engine is used in a variety of Ford vehicles, including the Edge, Escape, and Explorer. Aftermarket Products, Reviews & Installation, Suggestions, Comments & Questions about the Forum, Send a private message to flareside_thunder, 2006 F150 5.4 Sputtering - New thread CONDENSED, Do Not Sell or Share My Personal Information. Another common problem with this engine is intake manifold gasket leaks. 2.7L Interference B234 (F, G) Intereference 2.22L SOHC Interference 1.8L Interference If the timing chain or timing belt breaks or gets loose, it will skip a few teeth on the crank gear or cam. Then its crate engine time, and Ill have a good quality, double roller timing chain to put on it! In an interference engine, however, one or more of the valves protrudes into an area through which the piston may travel. The 4.0 OHV was also used in some Mazda trucks and SUVs. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); Greg Macke is a car buying specialist, author and consumer advocate working closely in the industry to improve the buyer's experience. The following is a list of popular Domestic and Asian engines and whether they or interference type or not. FOR SALE AT 500 CLASSIC AUTO - EXCELLENT MATCHING NUMBER 70 BOSS 302 WITH 60K ACTUAL MILES. For the 1983 Mustang, the five-liter engine received a 4-barrel Holley 600 cfm carb which allowed for an additional 18 horsepower. 1.6L DOHC (Storm) Interference Ford engineers have taken into account the fact that not all cars are using the exact same size of the engine and when designing their engines, they need to be able to accommodate several different sizes. This makes it a good choice for those who are not experienced in working on engines, or for those who want to save money by doing their own repairs and maintenance. The video below will also help you determine if your car has a timing belt or chain. Moreover, these valves extend to any area through which the piston may travel. Analytical cookies are used to understand how visitors interact with the website. This engine was rated at 118 horsepower and 193 lb-ft of torque. 1.4L Non-Interference For instance, if the cylinders and pistons are damaged, there is no other option but to replace or rebuild the engine. Not so with a non-interference engine. There is no standard repair process for bent valves. If there is a gap, the engine is called a non-interference engine. 7 When to change the timing chain on a non interference engine? The Coyote V8 engine also concurrently debuted in the 2011 Ford F-150. This 302 ran fine until this little boggle. The distinctive fifteen-inch air cleaner assembly was derived from the 351 Ford LTD H.O. 3.0L SOHC 12 Valve Engine Non-Interference Functional cookies help to perform certain functionalities like sharing the content of the website on social media platforms, collect feedbacks, and other third-party features. 3.0L SOHC 24 Valve Engine Interference Timing chain warns the driver unlike timing belts. From 1979 to 1995, the Mustang 302 was a liquid-cooled, overhead-valve, 90-degree V-8 engine. Conventional engines are the typical V8 engines found in a wide variety of American and European makes, from vehicles with the 3.2L engine to the 7.4L V8s in heavy-duty trucks and motorhomes such as Ford F150, Expedition, and Transit. This is a big job, but it can be done without pulling the engine. This cylinder head was used on LX and GT Mustangs until the retirement of the Fox Body Mustang in 1993. The modular motors are certainly interference engines. Here are some of the most common issues people have with this engine. SLX Non Interference, 1.4L, 1.5L & 1.6L Interference n2.2L Gasoline Interference 1.8L 131 Series, Brava Interference That saves a lot of time because you dont have to refer back to the component locator or circuit locations. In 1987, there were more changes to the 302. 3.2L Interference Other visual improvements included aluminum Powered by Ford valve covers. Is a 2002 Ford Focus a non interference engine? Yes, all 289/302/351 engines that I know of are definitely interference. Fortunately, the 4.0L SOHC is not an interference engine so a timing chain failure wont bend the valves. police engine package. What is a Salvaged Car and Should you Buy One? 2.5L 4 Cyl. This cookie is set by GDPR Cookie Consent plugin. I have a 302 ('86 block, 28oz imbalance) with '65 289 heads (round pushrod.