Post #215: 'Who cares about torque'.
Anybody who wants to get as much HP rom their engine should care about TQ, because TQ is one of two components reqd to make hp, the other is rpm.....
I have a very interesting article from an old SS & DI magazine, Dec 1979.
About rod length. When you build a stroker engine, stroke is typically increased. And that reduces the rod/stroke ratio:
"At low rpm the engine depends on the suction of the piston for cyl filling & the short rod gets things moving quickly. At high rpm, the inertia of the moving air helps out the induction & the engine breathes in some ways like a two cycle & the smoother slower accelerations of the long rod are more compatible."
"On a short rod engine the point at which the rod is at right angles to the stroke occurrs higher in the bore, which increases the compression of the burning A/F....This is one reason that a short rod engine seems to have more tq & pulling power".
"One of the most intriguing cases of the long rod/short rod situation working was found in the junior fuelers just a few years ago. "
301 engine , 3" stroke, 4"bore, R/S ratio 1.90. 307 engine 3.88"bore, 3.25" stroke 1.75 R/S ratio.
"......despite running nearly 15 mph slower they [ the short rod ] would regularly et one or two tenths quicker."