Left/drivers side Exhaust manifold sizes/styles ?

[rustytoolss]

question about the factory drivers side exhaust manifold. What size exit ports were used on the 318-360 A bodies ?...where some of them cast with the bell style end ? Just building a 318 or maybe be a 360/ don't have the cash for the $$340 manifold...what should I look for/ use ? NO HEADERS.

 

[oldkimmer]

The A body 318 manifolds had the bell. 1967 up. The 360 A body had a flat flange in 74 same as 72-73 340, 75-76 have a bell. Kim

 

[rustytoolss]

The A body 318 manifolds had the bell. 1967 up. The 360 A body had a flat flange in 74 same as 72-63 340, 75-76 have a bell. Kim

did the all the manifolds you listed..use the same size header pipe?

 

[oldkimmer]

On all 318 manifolds yes. Not sure if the 75-76 360 was the same as 318s. Kim

 

[toolmanmike]

@Treblig is the manifold expert. Hopefully he can chime in.