Stocker Cam Lobe Profile ?

[Aubrey N Bruneau]

On the gear change, of course it doesn't drop to 4500. Transmission has only a 2.83 first gear, so in terms of modern drag racing stick shift... it's almost a close ratio.
I know... not enough first gear for a 3640 pound car.
Also, these engines have a nortoriously long torque curve... never a lot, but very flat. A wider spread in gears would be better. Peak torque is at 4600-4800... still within 5 ft pounds at 5400 RPM. More gear spread would allow the engine to fall back into the real "thick" of the torque.
Simple math, if I lower the RPM range of the engine, I have to go taller gear ratio in order to retain trap speed.

Alan, I don't know WHAT you are using for a spring, but I've studied the hell out of this, and I can't find a single spring that will get near those figures. Also, in these engines, there's no room for a 7/16" pushrod ( the "pinch" in the intake port, adjacent to the pushrod hole, is already paper thin ). Can't be done. I have 3/8" Manton.
Also, header tube length under about 42", with a merge collector... ? Impossible, period. Chassis will not allow it. My headers are about 33"-34" long.16" total collector length.

maybe it's just destined to remain a slug ? ! ! !