MTFCA Forum

Evening Forum
Does anyone have a couple of numbers for a stock cam….looking for the diameter….and the top of the cam apex to the bottom of the cam circumstance…(180 degrees from the apex of the lobe) and any wear limits…..I wanna see if I my original cam is useable!
Many thanks Chums!

The best indicator of wear is to check for 250” max lift

Edwin, I recently checked for maximum lift by placing a shim between the lifter and valve stem that was thicker than the valve lash. That way the valve would not seat while measuring. I used a dial indicator on the top of the valve (head off) and took readings at minimum and maximum. My cam measured .215" on one lobe. I did not measure the other lobes after seeing such a low lift. I, too, would like opinions on what is an acceptable minimum since I am on the hunt for a better cam.

.240 would be a minimum for my tastes, to answer your question.
However, I would not consider running an original cam. They are inaccurately ground.
A CNC ground or reground is superior for accurate valve timing events.
Cant beat a new Stipe cam. If you can get one.

I've run more than a few .250 Stipe cams. Also had the good fortune to have purchased a few NOS Ford cams from the Porter estate. The Ford cams seem to have more low end torque.

A new, modern cam with the Ford stock grind would be ideal for a stock T in general service, especially in one of the heavier cars. The more aggressive grinds do well in the lighter cars and in cars driven often at higher speeds.

Did the T and TT use the same cam grind?