What engine(other than a porsche one) would fit in a PORSCHE 911 model 1980 please?help!!?

Given the resources (ie, time and money), you can fit pretty much anything you want. The biggest issue you will face will be issues with weight distribution - the Porsche's flat 6 is not that much lighter than other engines, but it's weight does sit lower. Another engine that is lighter but has it's weight higher will greatly upset the car's ability to turn at even low speeds.

But all of that is beside the point... while buying the non-Porsche engine will be cheaper, you will spend many times over that amount in fabricating parts and modifying the chassis to fit the different engine. If cost is your main concern, buying a 2.7L 911 engine from a '74-77 911 would be the cheapest route (though a 3.0L that would be correct for a 1980 would be the best route, costing only a little more than the 2.7L, and still world's cheaper than swapping in something else).

Edit - to correct the poster that thinks 911s didn't always use flat sixes... since it was introduced and all versions since, the 911 has had a flat six engine. It has changed displacement, getting larger over time, and about 10 years ago now, changed from air cooled to water cooled. But all of these without exception have been flat sixes.

I'm not sure why you are asking this question again since you already posted this same one here a short time ago... and not surprisingly, nothing has changed in the last day and the answer is still the same: Given enough resources (ie, time and money), you can put pretty much any engine and gearbox in the car you like. You could pick something as simple as a four cylinder VW bug engine, or see if you could slip in a detuned Cosworth racing V8 - just supply the money and the time to the qualified professionals to do the fabrication and chassis modication, and your are done. I've seen a Geo Metro engine stuck in a 911, small block chevies, Subaru WRX engines, even a Porsche 962 engine. Of course, once you pick an engine and put up the money, you'll come across a major engineering issue, which is the weight distribution of that engine, which will likely mean costly re-engineering of the suspension, or simply living with an undrivable car (it won't be able to go around corners at speeds great than 5-10 mph). And even if the center of gravity isn't an issue, you will need to address issues such as cooling (most of these engines are liquid cooled, not air cooled like the 911) and suspension changes, etc. If you have the budget, it can be an interesting project... just realize you will spend many many times over the cost of a 911 engine, and devalue the car in the process, making the total money investment even greater. You mentioned when you asked before that the 911 engine was too expensive... the fact is it is still the least expensive option. If you cannot afford any of these you'd be best served to sell the chassis as a roller and look for a project that is affordable. EDIT - For Pedro... while an air cooled VW Engine would be the least expensive option, the final cost isn't so simple (and why would I be scareD of a project, I think it's overly complicated and a poor investment from what's been mentioned so far). A good condition SC is worth ~$12k or so under current conditions, with the 3.0L engine you'd expect to find. The same car with a VW engine is worth, well about the same as the car without any engine: $5k. So, while $4k might cover the engine and tranmission in that case, you are talking about a total cost at the end of the day of $11k given the devaluation to the car (and $11k is a step cost to cut the performance in half... yes, an upgraded VW engine could close that gap, but only with much more money thrown at it). These are all options, as is just about any other engine/transmission option... some will be better suited than others based on complexity of the install and the overall weight and distribution of weight. None will wind up being inexpensive or simple. think Paul S is a little scare of this project. My opinion is to get a original transmission (used) and adapt a volkswagen engine.This will be the most inexpensive way to have this 911 running. Cost? Probably around $ 4,000 building a sligthly modified Type I engine. Next is installing a chevy small block, price goes up at minnimun of $8,000

Someone made a comment that the 911 has not always had a flat 6?

They do not know what they are talking about. Since, I believe it was 1963, the Porsche 911 has always had a flat six. The Porsche 912 (which looks like a 911) did come with a flat four, so maybe he made this common mistake. In 1999, then new 911 (996) came with a water cooled flat six. The 997 also came with a water cooled flat six.

All other configurations of the 911 also came with a flat six. The turbo, 964, 993, 935, GT3, GT2, GT1, Carrera, Targa, 911S, 911S4, 911e, 911t. All flat sixes.

I'm pretty sure I've seen a small block Chevy V8 being used in a 911, but it would probably cost about the same to re-engineer the Porsche to take it as it would for a motor from a scrap 911.

You absolutely do not want to use anything other than a porsche motor. For this you could just go find a wrecked 3.2 carrera and pull the motor or you could find an older motor to put in. Anything else is going to be hell and will destroy any value the car has. I have seen people put in wrx motors however they always have problems. If you want the car to come out well you absolutely need to save up and just buy a motor. Search on sites like Pelican Parts and Rennlist for used motors, there are a ton of them and are reasonably priced. Those sites also have a huge forum following and the people on there will walk you through your options. Just dont listen to the people that say you can put in a smallblock or VW motor, its really not worth it in the longrun.

Please don't butcher a Porsche like that. Try to find a good used engine at a wrecking yard. Nothing else is going to work unless you shoehorn in a Chevy V-6 or V-8 and end up with a Frankenporsche.

The SC is a good car. You should be able to find a decent used engine for $2500--$3500 bucks. A rebuild will cost you about $12,000.

The Porsche engine is air-cooled and horizontally opposed. Nobody else uses that configuration. Either pay up for the right stuff or sell the car as is for whatever you can get for it.

If you can't afford the motor why do you even have this car?

Don't screw up a classic car. Installing the wrong engine would kill the value of the car. Using the wrong engine is not restoring the car you will ruin a valuable car. Just put it in storage untill you can save enough money to buy a correct engine. You would spend more to get someone good enough to install the wrong engine than saving to buy the correct engine.Your engine may be in good enough shape to be overhauled.Good Luck! That's a very desirable classic car.

Okay, need to clear up some confusion. The 911s didn't always use flat sixes!

Now, to answer your question, none. You would have to find a Porsche engine for it. You can try places that specialize in European cars and see if they have or can order a remanufactured engine. The engine is refurbished, but with like new quality and it would cost a lot less than brand new.

People did put small block GM V8s in the 928s, which were front engined V8 cars to begin with.

If you can't afford the engine, don't do it - the flat six is the heart & soul of a 911. If it doesn't have one, it's pointless.