If you want your car to pull cleanly with authority, the Offy is much better, especially on a 250 & smaller engine.
It's all about port velocity, & the Offy has much more of that going for it.
The Cliffords intake runners are so huge, the port velocity is horrendous.
The Clifford intake works as if you removed the intake boss on the cylinder head, opened up the port window as large as possible & installed a 1.94" intake valve, = poor low port velocity, which absolutely kills low end engine response.
The Offy also bolts right on w/no mods needed, the Clifford, grinding, modding brackets to make it work.
DeuceCoupes tests showed the Offy was the quickest accelerating..
And so goes on the debate.
It would be a different story, if you had low rear gears a manual trans or high stall converter w/a cam & compression.
The Clifford will make more power later in the RPM range.
BTW,, I like both manifolds, they each have there own purpose.
They have very different distinctive characters for each manifold.
It just depends on your combo in the engine & how the gearing is in the vehicle.
MBHD
