The Jim McFarland CD's....
Posted: Sun Feb 01, 2004 10:21 pm
Don,
Was wondering if by chance you have ever read Jim's book ? It is titled " The Great Manifold Bolt On " .... It was published by Edelbrock circa 1982 ?
During the interview Jim was talking about the intake runner shape and how he felt that it should have a trapezoidial cross section...... there is a very good pic in there of that......
Also a good time/pressure trace showing the sine waves in the intake prior to the valve opening.....what happens as the valve opens ( reversion spike ) ..during cylinder fill and closeing.....whats really intresting is the much higher amplitude when the intake closes..... sort of ties in with the discussion on another thread here on the 4/7 cam swap.
Also in the interview he was discussing different lobes and cam timing for different cylinders........ I have some 30 plus year old info on that very subject from one of the major cam mfg's if you would ever like to see it.
Was wondering if by chance you have ever read Jim's book ? It is titled " The Great Manifold Bolt On " .... It was published by Edelbrock circa 1982 ?
During the interview Jim was talking about the intake runner shape and how he felt that it should have a trapezoidial cross section...... there is a very good pic in there of that......
Also a good time/pressure trace showing the sine waves in the intake prior to the valve opening.....what happens as the valve opens ( reversion spike ) ..during cylinder fill and closeing.....whats really intresting is the much higher amplitude when the intake closes..... sort of ties in with the discussion on another thread here on the 4/7 cam swap.
Also in the interview he was discussing different lobes and cam timing for different cylinders........ I have some 30 plus year old info on that very subject from one of the major cam mfg's if you would ever like to see it.