It would be nice if someone could run both the OffY and the Clifford. Maybe they could start another post with the results.
Duece,
When opening the 292 lower end up, the 2 middle cam bearings were mushroomed out. They are durabonds. So bad that the oil holes got covered by smooshed metal. When changing cams, they had to be forced out ( with hammer).
I am sure these bearings were costing power in 2 ways. One in frictional loses and second by allowing the cam to flex against the spring pressure of the valves. Thus causing irratic lift and duration.
The 292 was definately louder than this 250 and I am sure this was the noise. Probably would have gained 10 hp or more with the 292.
The exhaust for the dyno is a good loose design. Just last week a 400 SBC was done and produced 600 hp and 590 tq. It sounded sweet!
Last edited by tlowe #1716; 04/05/10 09:30 AM.
