Vintage 273 - 318 - 340 - 360 small block mopar offenhauser crossram intake 5488

bbrroowwnn said
summit show this intake manifold 5488 as only for the 273....so I would think it would be Ok for a 318 also as the port runners are the same size....But the 340 360 has bigger head port runners so this manifold would not be taking advantage of the larger head runners on the 340/360 heads correct???

http://www.summitracing.com/parts/ofy-5488/applications/

Not only that but according to Summit's listing it's for a 64-65 273 which means it won't even bolt up to anything but a 64-65 273 or something with 64-65 273 heads on it unless the intake or heads are modified. 66 and newer had a different bolt angle.