Chevy 305 engine reliability

Chevy 305 engine reliability

Automotive Forums. What do you think? When buying a remanufactured engine, one is rolling the dice. If you buy strictly on price and how "good" the warranty is, you'll be needing that warranty, almost invariably. You may wish to look at local shops and find the the better smallblock guys. You don't need a "race" engine or anything like that, but you DO need a reliable and efficient engine. Just beware if the price seems to good. But again, those are custom-built for specific applications and the overall cost wasn't as important to the customer as the end result.

chevy 305 engine reliability

Operative word "little". If economy is more important than power, is a good choice. If you need more or want power, is a more logical choice. It bolts right in where was, and is a more efficient package. If you want it to "pull a load" trailer, heavy cargo, whateverhave them use a "torque cam" NOT a high perormance cam.

This will enhance low-end power and increase fuel economy. Some call it an "RV" cam.

chevy 305 engine reliability

Putting an aftermarket intake like Edelbrock "Performer" and small-tube headers will inrcease both power and efficiency, as well. A well-tuned small 4-bbl. IF one practices "right foot control". Jim, your advise seems centered on power and efficiency which are important, but what I was referring to was more in terms of longevity and reliability. I focused mainly on the valve train because it's been my experience with Chevy small blocks that the valve train is usually the first thing to fail or give repeated problems.

In other words, I'd be willing to sacrifice power and efficiency for the sake of having an engine that would last longer. For example, valve guide wear is probably much less when using roller rockers because the valves have less side to side wear and they run more true within the guides.

It's been my experience with Chevy small blocks that I need to adjust the valves every few years to quiet them. Not for high performance, but for high reliability. I could be wrong since there are more moving parts that could possibly fail.

4.3 V-6 chevy engine --any issues with it?????

I really don't know and this is why I asked the question. Another example is the timing chain and gears which I've often seen fail prematurely when the nylon coated gears wear prematurely. So my idea is to use a double roller timing chain and all metal gears for reasons of longevity.The Jalopy Journal. Terms of Service.

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Privacy Policy. Log in or Sign up. Atomic Industries www. Register now to get rid of these ads! The H. I have a 51 Chevy 2dr. I,m wondering which would be best for my low budget project. I know free is hard to beat,but I'm aware the ,s aren,t well thought of. I,m not one who just has to have a ! Opinions please. I would go for the The is good,but has NO torque. If you go on a trip it will labor on the hills.

Then I would save your money for a Bad BobJun 14, I got one in real bad condition once just to learn how to take apart an engine and then scrapped it when I was done. Clay Belt likes this. Either one will be fine. Once again, there is nothing wrong with aexcept that many came from the factory with unhardened camshafts that wore out prematurely, causing poor performance and mileage, and giving the an undeserved bad rap.

Slip in a quality stock replacement cam for a engine and a new set of lifters and a timing set and you're good to go. The is just a with a smaller bore. The is an excellent all-around performer as well. It's just a with a smaller bore and makes a perfect daily driver motor.

In stock form, you won't notice much if any difference between the and theassuming both are mechanically sound and in a good state of tune, so either one will work for what you're after. One thing most people overlook, though, is that the will have heads with hardened valve seats for use with unleaded fuel, where the likely won't, as they were built frombefore catalytic converters and mandatory unleaded fuel. For as many miles as most people here put on their rides, the valve seat thing isn't a big deal.

You can always run a lead substitiute if it concerns you, or if you plan to actually drive the car daily on pump gas.

Fuel quality and formulation is something that goes unconsidered by the vast majority of today's hot rodders, but it is important! The was born in the era of low octane unleaded and can easily be made to perform well on today's fuels.

The will do okay, but it was designed to operate on moderate octane leaded fuel. It's not hard to adapt older engines especially small block Chevys!

Of course, you could always drop the crank into the block and create a super low compression cube motor that can't possibly run, much less make power Flip a coin Fat HackJun 14, I would like to have more engine a good sounding cam but anyway, i will spin good in first and a few feet in sec and run ont he parkway and not drop on hills.

This thread got me to thinking about Chevys VDespite sharing the same designation as the ever-popular 5. This seems odd since it's a Chevy small-block under the skin, but in the performance world, just as in nature, bigger is almost always seen as better. In reality, Chevys including our carbureted LG4 version make great street engines and can be the basis for impressive performance machines. That is not to say that the by way of the increase in displacement won't ultimately make more average and possibly even peak power this depends on combinationbut don't dismiss that 5.

Before getting to our test, we should take a look at a few of the common complaints about the According to ramblings on the various forums, the first strike against the is displacement.

True enough, it is always easier to reach a given power goal with more cubes, but the major concern for any build up is usually dollars and not displacement. While heads, cam and an intake for the will cost the same as athe fact that you can retain your existing short-block makes swapping over to the larger much less cost-effective.

If you are looking for an extra hp, the stock short-block even if it is a high-mileage unit will work perfectly with the planned upgrades. If your needs rebuilding or replacing, by all means grab a cheap from a wrecking yard and start with that-or better yet step up to a larger or even Problem number two with the is the small bore size. The bore 3. Were we to build a hp small-block using either a 4. If we went looking for a high-winding combination capable of exceeding hp or morethen the larger bore offered by the configuration would certainly come into play.

Unlike its brother theChevy actually offered performance versions of the 5. The hp rating offered by the LB9 TPI motor pales in comparison to the current LS-based combinations, but back in the day, the TPI with the five-speed tranny was a pretty hot set up and could rip of second quarter-mile times and near mph top speeds in stock trim. The TPI motors did offer some serious torque thanks to their extra-long intake runners, but power production quickly leveled off at the top of the rev range.

Despite that deficit, the LG4 and L03 s respond very well to performance upgrades. In fact, the TPI induction system will soon become the power restriction, as a carbureted will easily make more peak power but less peak torque than a typical TPI set up. The factory TBI induction system leaves a little to be desired, but replacing the TBI with a carburetor is a simple enough matter though first check with state smog regulations.

For you TBI lovers out there, we do have some of that tech coming. To take full advantage of the power gains offered by the mods performed to our test motor, a good set of long-tube headers and free flowing exhaust are a must, as is a true and free-flowing cold air induction. On the dyno, our carburetor received an unrestricted supply of cold air, but every effort should be made to provide a dedicated ambient air source in the car as well.Some of the bow-tie brand's most long-standing contributions to the automotive world have been engines.

We've compiled a list of Chevy's ten best powerplants -- some have been revolutionary, some have been game-changers, others have been just downright awesome. Stove Bolt Six ; cu in in-line-6, 46 hp. The Stove Bolt Six -- so-called because it mimicked the bolt found on early-twentieth-century stoves -- was not Chevrolet's first six-cylinder engine, but it was the first six-cylinder that the automaker offered in a value-priced car.

Chevy advertised it as "a six for the price of a four" because it was more closely compared with the in-line four-cylinder offerings of the day in price and power. Chevrolet continued to use a variant of the Stove Bolt, which was introduced inuntil well into the s. Why is it one of the best?

The Stove Bolt Six was the first six-cylinder engine on sale in the U. It also beat out the then-best-selling Ford Model A's four-cylinder by 6 hp. Small-Block V-8 ; cu in V-8, hp. The Bel Air was a big deal for Chevrolet, as it overhauled the Chevy's brand image and sold in droves.

Equally important, it heralded the debut of the small-block V The cubic-inch V-8 was good for hp in the Bel Air but could be fitted with an optional power pack, which bumped power by 18 hp with a four-barrel carburetor, a revised air cleaner and intake manifold, and a dual exhaust.

The Bel Air would become the be-finned icon of the s, and with those tailfins came a bump in the small-block's displacement, to cubic inches, and fuel injection. The small-block turned out to be so flexible that it was adapted for racing, becoming the first Chevy engine to produce hp.

The small-block also spawned some of American society's most loved engines - such as the that used a four-barrel carburetor, aluminum intake manifold, and unique casting to pump out hp, and had teens across the U.

The Chevy small-block marked the beginning of the modern V Its basic design is flexible enough to accept numerous advancements over the years and continues to be used to today. Corvair Monza Spyder Turbo Six ; When talking about engineering innovations, we can't neglect to mention that Chevrolet was the first to bring to market a turbocharged production car, in with the Corvair Monza Spyder.

chevy 305 engine reliability

The Corvair was also the only American-made rear-wheel drive, rear-engined car, just like the much-loved original Volkswagen Beetle. The Corvair may have met an untimely fate thanks to Ralph Nader's Unsafe At Any Speed, but the innovations it introduced live on - especially today, as manufacturers look to smaller turbocharged engines to make efficiency gains and meet more stringent regulations. It was the first turbocharged engine on sale in the United States.

Chevrolet only built '69 Camaro ZL-1s, and they cost roughly twice as much as a standard Vpowered coupe. An all-aluminum version of the Chevy big-block V-8 that was intended more for drag race use than on the streets, the ZL-1's engine was produced by hand in a "clean room. The ZL-1 was one of the most powerful Camaros, and one of the rarest to boot.

Aerovette Four-Rotor Wankel ; cu in 9. Ok, so the s Aerovette concept never made it to production, but it is still had one of the most impressive engines to appear in a car wearing the bow tie.

The Aerovette was impressive because it was built entirely from parts that were already being used elsewhere in the Chevrolet lineup. Its engine -- the largest Wankel rotary engine ever in a car -- was mid-mounted. The Aerovette's shape differed from other Corvettes of the s thanks to a wind-tunnel honed 0. The Four-Rotor engine shows that Chevrolet engineers have been -- and continue to be -- among the most innovative in the automotive industry, ready to take risks and developing engines that are both powerful and legendary.

GM contracted development of the engine to Lotus Engineering which was actually owned by GM at that time. Originally, Lotus designed a clean-sheet design for the LT5 that was intended to make hp. However, GM wanted to use the engine block from the existing small-block V-8, and the Lotus modified its design to meet GM's requirements.The U.


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Messages: Rebuild already?!?!

GM 3.6 Liter V6 LFX Engine

Been running it without oil or something? Haven't you ever heardis break in on a or Gas mileage usually is crap with a 8 shouldnt be that bad. What kind of gearing do you have? How long really depends on how you use it and how you take care of it. I had one a that was probably ready for a rebuild atI've also had friends that make it toand they still run like new. Sounds like yours is fine, from what you said. I think mine also wore out faster because it had to survive me driving it in my teens when I thought I had a 4x4 race car.

Not to mention towing the boat, hauling fire wood, ect. You get the picture. Change the oil, take care of it, sounds like it's got lot's of life left. MTCKJan 18, Messages: 2, Mike the is not a great high revver,due to being a fairly long stroke motor.

I think if it is EFI,and is mainatined,K isnt unreasonable to get out of one,they seem to be indestructable as far as durability. I would expect to be adding oil at that mileage along with it getting tired and a little smoke by then.

My ,which is the same engine,but with a 4. The hrs on it are probably similar to a truck with K on it. It does burn a quart between changes,but runs as good as new,The oil usage hasnt changed ,the valve guides are worn,a common problem with engines built at the flint plant.

John DiMartinoJan 18, Messages: 2. I have a s 10 with a 4. You must log in or sign up to reply here. Show Ignored Content. Your name or email address: Do you already have an account?We know, advertisements are annoying and slow down the internet.

Unfortunately, this is how we pay the bills and our authors. We would love for you to enjoy our content, we've worked hard on providing it. Please whitelist our site in your adblocker, refresh the page, and enjoy! The 3. The engine further refines an already well-balanced powerplant. It now uses new, lighter-weight components and enhancements designed to improve performance, efficiency, and durability. This aluminum-intensive construction means less weight and greater efficiency than conventional cast-iron engines — and less weight translates to improved vehicle fuel economy.

The sand-mold-cast block features strong cast-in iron bore liners, six-bolt main caps, and inter-bay breather vents. A cast aluminum oil pan is stiffened to improve powertrain rigidity and reduce vehicle vibration. Rotating Assembly with Oil-Spray Cooled Pistons : the crankshaft is manufactured from forged steel, while the connecting rods are made of powdered metal that features a higher ratio of copper, which makes them stronger and enables them to be lighter.

The V6 VVT engine family was developed with pressure-actuated oil squirters in all applications. The jets reduce piston temperature, which in turn allows the engine to produce more power without reducing long-term durability.

By using larger valves and holding them open longer, more of the air is pulled into the combustion chamber, for a more powerful combustion. The exhaust manifold is incorporated with the cylinder head, which saves weight, reduces complexity and helps promote a quicker light off of the catalytic converter, which further helps reduce emissions.

Direct Injection : direct injection moves the point where fuel feeds into an engine closer to the point where it ignites, enabling greater combustion efficiency. It fosters a more complete burn of the fuel in the air-fuel mixture, and it operates at a lower temperature than conventional port injection. That allows the mixture to be leaner less fuel and more airso less fuel is required to produce the equivalent horsepower of a conventional, port injection fuel system.

Direct injection also delivers reduced emissions, particularly cold-start emissions, which are cut by about 25 percent. E85 Flex-Fuel Capability : E85 is a clean-burning, domestically produced alternative fuel composed of 85 percent ethanol alcohol and 15 percent gasoline. Ethanol is renewable and produces fewer greenhouse gas emissions in the combustion process.

It can be produced from various feed stocks, including corn and wheat stalks, forestry and agricultural waste and even municipal waste. The engine incorporates a timing chain with an inverted tooth design. These smaller links engage at a lower impact speed, which decreases the noise generated. In conjunction with the smaller pitch chain, the number of teeth on the sprockets are increased, which increases the meshing frequency and further reduces noise and vibration.

Four valves per cylinder and a silent chain valvetrain contribute to both smoothness and high output. Four-cam phasing changes the timing of valve operation as operating conditions such as rpm and engine load vary. It allows linear delivery of torque, with near-peak levels over a broad rpm range, and high specific output horsepower per liter of displacement without sacrificing overall engine response, or driveability.I'm looking into buying an 86 GMC 4x4 truck with a in it, is it any good?

Its got around k miles on it. In my shop I had a few with over K on them and they are still running good. One good example was a customer's 79 Chevy Van withmiles he changed the oil every miles since new fuel filters and air filter every miles and that engine was running smooth and had plenty of power to move his van Starcraft custom version along quite nicely, he had no complaints with it except it was hard to parallel park.

I have also worked on Taxi Cabs with engines with well over k on them. Maintenance is the key to long engine life. The has some major faults, but if you are buying the truck just to get around, it is ok for the year range. An upgrade should be in your future. The may be the worst small block ever made, but considering some of the turds put out by other manufactures in the same period, you could do a lot worse. Parts are the same as asave the pistons themselves, and heads, but the heads can be worked over a bit and used on a to bump compression up.

Reliability depends entirely on past maintenance when it comes to any engine over k. The is no exception. It has no weak links, as it shares all of its crucial parts with the The problem with them is their small bore, which limits valve size. This limits power because you can't get enough air into the cylinder. Yes it is. But it s really depends on what your doing with it how much are you hauling if alot consider the if just things here and there and working a little out of it you cant go wrong with the and its not underpowered.

It's gone through alot.

How to Fix Chevy 305 Problems

Don't get me wrong, it is a good engine, but k miles is loads for an engine like aso I wouldn't expect much. Look at it from this perspective: it has lasted k miles, why shouldn't it be good for the rest of its 'lifetime'? The is a low h. It hardly had enough power to get out of it,s own way I,d have to say no to this one L99 4. Answer Save. Parts are the same as asave the pistons themselves, and heads, but the heads can be worked over a bit and used on a to bump compression up Reliability depends entirely on past maintenance when it comes to any engine over k.

How do you think about the answers? You can sign in to vote the answer. Todd A Lv 6. Yea the is a decent engine.


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