273 to 340
Here the 340 exhaust gasket (silver) and the 273/318 gasket (blue). The exhaust ports on the 273 manifolds are much, much smaller than the ports on the 273 manifolds.:
Here the 340 exhaust gasket (silver) and the 273/318 gasket (blue). The exhaust ports on the 273 manifolds are much, much smaller than the ports on the 273 manifolds.:
