I have had both the Offy & Clifford intake manifolds on 250 engines w/different combos & the Offy is better for low end torque & makes for a better driver day to day type manifold.
The Offy makes for a better street manifold I can speak from personal experience on 250 engines, daily driver type senarios, not engine dynos, can't say for a 292, I would think a 292 engine can deal w/a Clifford far better than a 194 CI engine.
A person here tried both manifolds w/a stock 250 engine & the results were close,, but this is on a stock engine, when you run a bigger camshaft, bigger ports, bigger valves etc, the Offy will shine more so in the lower RPM's..
I other words, if you over cammed an engine ran less than optimal compression, made the intake ports big & used large intake valves, the Clifford will be an absolute pig as compared to to an Offy intake, especially if your engine is 250 CI or less, I can only imagine what an over cammed ,low compression big port 194 ci engine would be like w/a Clifford manifold. horrendous!!!!
If you look @ the Clifford intake runners, they are HUGE! When you have huge runners, the port velosity goes down tremendously & when this happens, you lose torque & other important parameters for a strong healthy engine.
MBHD
