Are there different versions of the Mopar 318?

The 318 was produced in three versions: polysphere, LA series, and Magnum. Each are good engines, but for performance use, you should stick with the LA or Magnum because performance parts for the 318 Poly are hard to find. This article focuses on the LA version. Why Build a 318? Why build a 318 when it’s just as cheap to build a 360?

What kind of compression does a 318 do?

And the 340 cam just makes it more sluggish. IMO, if you wanna wake a 318 up, just throw a 2800TC at it, a small-port 4bbl, dual exhaust and the biggest darn gears you dare drive. She does real good with 4.30s, pretty good with 3.91s, good with 3.55s but no less than that, until you bring the compression up..

What’s the difference between a 318 and a 340?

the la blocks where developed past the earlier a blocks which stood for alloy la standing for light alloy. the 318 and 340 are almost exactly the same except for bore size and the 318 used cheaper parts. to do a successful 318 build used a 340 forged crank 340 rods will fit as well

Which is the best head for a 318 engine?

The small chamber of these heads give your 318 a higher compression ratio, which is good for both power and fuel economy. If you need to build a low compression engine, these are still the best heads to use, but run them with dished pistons. Some builders report that for two otherwise identical engines (including compression ratio)]

Which is the best cylinder head for a Mopar 318?

Mopar ‘302’ High Swirl Cylinder Heads The small chamber of these heads give your 318 a higher compression ratio, which is good for both power and fuel economy. If you need to build a low compression engine, these are still the best heads to use, but run them with dished pistons.

Which is the best Mopar engine for street use?

The 318 engine is absolutely the best all-around small block Mopar, in my opinion. It can easily make 400 plus horsepower and still has great street manners. If you’re building for fuel economy, the 318 beats the Mopar 340 and 360, hands down.