Thread: Lowport o2 induction manifolds...

who is to say that the stock manifold is inefficent? and that in reality its the camshafts, and the overall port design of the head that isnt efficent. i have already proven that its not the camshafts or the lift that is what is inefficent in the low port, but the head design itssself, becuase head to head the highport outflowed the low port at lower inches of lift.

but you also have to look at the cfm flow of the heads. if the low port head is 1mm of lift behind the high port that means that if a low port head has a 11.5mm lift camshaft and the high port has a 10.5 the high port is going to flow equal ammounts of cfm. which means the high port can utalize a slightly smaller camshaft to flow the exactly the same.

which means head to head, cam to cam manifold to manifold, the cfm or volume the head will flow will always be greater on the high port.

the differences in cfm flow would come down to the ammount of work the head has done, if they make the ports larger obviously the cfm flow is going to increase.

i would personally invest 600 into headwork and making the head flow better than a intake manifold.....cfm flow has greatly to do with intake manifolds as you can have a intake manifold that can flow 600cfm, but if the head itsself cant flow that, then you are going to have a problem

haha, ok i can agree with that although it had nothing to do with what I had said. i never mentioned anything about the head, but of course if the intake manifold flows better, to free up the most power the head and exhaust manifold must flow better too.

but can he make velocity stacks like that? can he integrate the injectors smoothly? can he get the runners to widen and flatten out to go seemlessly into the ports?

brian crower can copy other peoples' cams. ssac can copy other peoples' headers. now you want your friend to copy O2 induction's manifold?

just something to think about.