Oldsragger

Have someone try to build turbo(s) on one of these smallblocks before? if i understand right the 307 have lowcomp pistons/ setup as standard? Now im just image me a overhauled engine,h-rods,new bearings,etc, and a "computer"/electronic carburetor and computer ignitions. / OR convert it to computer injection by welding maybe 4 needles in the place the carb standing.

just have a tought what i will do with my old 307 with 5A heads, maybe it is not worth the job at all and end up with bad power , but in case it could be funny to see how much power this engine can produce with some boost help. i have heard this engines is not the best to tune up with option parts but maybe with some turbos and more modifications and many hours in the garage :P

Is this engines stable on high rev limit?

oldsmobiledave

You can put a spit shine on a turd too .... but in the end it is still a turd.

Oldsragger

Im not sure what you mean, sorry my bad english understanding

Octania

The saying is, "you can't polish a turd"

A turd is a unit of feces, dookey, spoor, droppings, poop, cow pie, etc.

meaning, if you start with a useless artifact, even if you make it better, you still end up with a relatively useless artifact.

So, putting all that effort, or any effort at all, into a 307 is more or less a waste of time, because in the end it's still a 307.

Then there are always folks who will do what magic they can with what they have. I have heard of hot rodding a 260, but have not seen it done.

If all you have or can get is "a turd," then perhaps a polished one is still better than an unpolished one?

1969w3155

The poster of the question is in Norway, so he may not understand the reference. To Oldsragger, the 307 is probably not the best engine to subject to that kind of build up.

joe_padavano

Actually, you can:

http://www.howtocleanstuff.net/how-to-polish-a-turd/

To the O.P.'s original question, the 307 has a lightweight block with windowed webs, crappy cast pistons, small valves, and was designed to comply with emissions and mileage requirements as cheaply as possible. What could possibly go wrong?

I was going to point out that it would cost far less to simply jack up the air cleaner and drive a 455 under it, but then I noticed his location. I'm guessing that 455s aren't that easy to find in Norway. You might want to try a 250 shot of nitrous. You'll make the same amount of power and you won't have nearly as much money into it when the engine grenades. Plus you can probably transfer the nitrous system to the new engine.

Octania

" Plus you can probably transfer the nitrous system to the new engine."

Joe, thank you for your contributions.
I laughed and laughed at the above entry.
Nutshelled. Short and right to the point... and true.

Professur

What they're trying to say in comical fashion is ... the 307 was built light and weak. You can't effectively improve it. A better, cheaper choice would be to swap it for something modern that's built strong. Any work to make a 307 produce more HP than it came with from the factory will make it fail ... catastrophically (that means bad, very bad).

Oldsragger

hehehehehe,, ok nevermind, i think will just save the engine away then instead

Lady72nRob71

A 350 SB Olds engine is pretty much a direct bolt-in, if you can find one in your country. A stock 68-72 would be a great improvement, and there are aftermarket performance parts for it also.

If keeping the 307, just make sure it is running the way it should for best 'performance'.

Oldsragger

i allready have engine i will replace the old 307 one with,, i just got some crazy ideas last day about turbos on it, but seens it looks like a bad engine to try to build on hehe.
anyway this 307 goes very well, no problem with it at all good engine:P