Power loss. 318 Vs 340 manifolds
power loss depends on the cam you use for 1.
I'd say about 15-19hp, the real deal is the 340 manifolds will allow it to rev and still make power in the upper.
See chrysler eng'rs found minimal power loss as long as they kept the head pipes 3 1/2 + inches straight out from the port, and divided the ports as you can see in the pics. these sets are from a 69 dart and the other is from my 70 duster that someone painted w/high temp.
power loss depends on the cam you use for 1.
I'd say about 15-19hp, the real deal is the 340 manifolds will allow it to rev and still make power in the upper.
See chrysler eng'rs found minimal power loss as long as they kept the head pipes 3 1/2 + inches straight out from the port, and divided the ports as you can see in the pics. these sets are from a 69 dart and the other is from my 70 duster that someone painted w/high temp.