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How much horsepower does a 318 Poly have?
A two-barrel version of the 318 was rated at 230 horsepower, and the standard four-barrel was rated at 260, where they would stay through the 1962 model year.
What is a poly 318 V8?
The 318 is the most common version of the A engine, produced from 1957 through 1967 when it was replaced in all markets by the LA 318. Only Plymouth used this 318 in 1957 and 1958, but it was shared with Chrysler from 1959 on and Dodge from 1960 on.
Is the 318 a good engine?
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. The 318 was produced in three versions: polysphere, LA series, and Magnum.
What is a poly V8?
The Polyspheric or Poly engines were V8 engines produced by Chrysler from 1955 to 1958 as lower-cost alternatives to the Hemi engines. These engines were based on the Hemi engines, using the same blocks and crankshaft parts, but completely different cylinder heads, pushrods, exhaust manifolds and pistons.
How much HP can a 340 make?
With the single four-barrel cast-iron factory dual-plane intake and exhaust manifolds, the basically stock 340 revealed the glorious truth with 320.3 horsepower at 5,500 rpm.
What kind of engine is a 318 Poly?
The predecessor to the later LA engines, the Poly was an A engine that had several displacements: 277, 301, 303, 313, 318, & 326 cubic inches, the more popular engine that you will hear about is the 318.
How much horsepower does a 318 4-bbl lose?
In 1967, a 318 4-bbl was rated at about 230, that means that based on cylinder head design alone the LA basically lost about 30 horsepower. The predecessor to the later LA engines, the Poly was an A engine that had several displacements: 277, 301, 303, 313, 318, & 326 cubic inches, the more popular engine that you will hear about is the 318.
Is the poly 318 a drivable car?
This car with the Poly is drivable, it’s not going to win any races but it doesn’t sit in a garage for months at a time, either. But it’s more than that with the Poly 318, it’s just different. Everyone and their brother who has a Mopar has a big block, or a HEMI.
How much horsepower does a 318 big block Mopar engine have?
The Mopar 440 big block was just a few pounds heavier, so this 318 was quite a heavy engine considering. But it was efficient, if anything, and the design of the cylinder heads made it breathe better and it wasn’t so bad on the fuel mileage, either. To put some numbers together for you, in 1957 a factory dual quad Poly 318 was rated at 290 hp!