wedge or poly
 

got a question. how do i tell if my motor is a wedge or poly....... tryin to figure it out for a 340 hood decal i wanna buy but wuld hate to put it on there with the word wedge on it if i dont have one.

you have a 340?
its probably a wedge

wedge or poly
 

The poly engine went out I think in 1963 in 64 the 273 replaced the poly engine.You can call all of the mopar engines wedges from that point on{318 340 383 426 and 440} .except the hemi.

I was thinking it was 64.... but it may be 63.

But I agree with Dartcuda.

Back in 1982, I had a '64 Belvedere that had the original 318 polysherical head 3spd on the column.

So, it was at least 64!:)

http://i450.photobucket.com/albums/q...ere3183spd.jpg

66 was the last "poly" engine, hands down they had more tourqe than that of the "lightweight" A engine (LA)

1955 was the first and 66 was the last.