How much horsepower can you get from a 318?

A street-worthy 318 can easily make 400 horsepower, about what a lot of street 360s put out.

How much HP can you get out of a 318 magnum?

The car can easily reach 400 horsepower and still maintain its street manners. The 318 is a better choice for fuel economy than the 340 and 360 from Mopar. Polysphere, LA series, and Magnum were the three versions of the 318.

Will 340 heads work on a 318?

The problem with all the 340/360 heads on a 318 is the chamber measures about 70 cc, which will drop the compression to an unworkable low ratio on a 318. You can forget about decent performance with these heads and the stock pistons, so again, a set of moderately priced aftermarket pistons is the answer.

Are 318 heads the same as 360 heads?

What is the significant difference between 318 LA block heads and 360 heads? .-=[NGV]=-. 318 heads run a smaller intake runner and use a 1.78/1.50 valve sizing while the 360 heads have a larger intake runner and thicker walls (better for porting for flow) and utilize the 1.88/1.60 valve sizing.

Will a 340 intake fit a 318?

It will bolt up to the 318 heads but there will be a port mismatch because the 340 intake port is bigger than the 318.

How much HP does a 318 v8 have?

The 318 (5.2 Liter V-8) The power ratings of the new LA-series 318 were exactly the same as those for the old polyspherical-head design, 230 hp and 340 lb-ft.

Was Dodge 318 a good engine?

Are Dodge 318 Good Engines? It has good qualities and comes down to the reliability, with cast-iron crankshaft on the bottom end which is not as useful as a forged crank, though both will not perform as well.

What makes a Mopar 318 a good engine?

Some builders report that for two otherwise identical engines (including compression ratio), an engine with dished pistons and small chamber heads can make as much as 20 horsepower more than en engine with flat top pistons and open chamber heads. The Mopar 318 in my opinion is Chrysler’s most versatile engine.

What are the best cylinder heads for a 318?

These are by far the best cylinder heads to use on a mild 318 (I know, some people prefer the 360 heads). They have high-velocity ports that give good flow with just a little work and a closed, high-swirl combustion chamber that helps prevent detonation. I upgraded from stock valve sizes to 1.88″ intake and 1.60″ exhaust valves.

Will a small block Mopar cylinder head fit in my engine?

These will fit any Mopar small block engine manufactured from 1968 to 1991. If you want a small block Mopar cylinder head that you can use with your stock intake manifold and exhaust manifolds. This is it. If you have aftermarket headers installed. This will work with most of them. Note: This product can be found on Amazon.com .

Does the 318 Poly head engine require special pistons?

The 318 Poly head engine requires special pistons to work with the original poly spherical combustion chamber heads. Please contact us for assistance with 318 Poly rotating assemblies, 318 Poly stroker kits, pistons, crankshafts, rods or bearings.