Swap cylinders 4 & 7, improved hp?

[Just Say N20]

I came across this, and while I'm no engine builder, I couldn't help but wonder if there was any truth to this claim. Basically, that by using this specially ground cam, which allows you to swap the firing of 4 & 7 cylinders, you can experience more hp, a flatter torque curve, and higher torque.

I thought I would ask people much smarter than I am, if they had heard of this, or if it falls into the "mystery carb that got a 100 miles per gallon " my father's friend used to claim to have "tested for one of the big three" back when I was a kid.

http://www.powerandperformancenews.com/Technical/Newsletters/Files/PAPNV1I7.html#5 :confused:

[Rootsy]

I came across this, and while I'm no engine builder, I couldn't help but wonder if there was any truth to this claim. Basically, that by using this specially ground cam, which allows you to swap the firing of 4 & 7 cylinders, you can experience more hp, a flatter torque curve, and higher torque.
I thought I would ask people much smarter than I am, if they had heard of this, or if it falls into the "mystery carb that got a 100 miles per gallon " my father's friend used to claim to have "tested for one of the big three" back when I was a kid.
http://www.powerandperformancenews.com/Technical/Newsletters/Files/PAPNV1I7.html#5 :confused:

it works... but "generally" the higher you wind it the bigger the gains you'll see...

read this.... http://www.speedtalk.com/forum/viewtopic.php?t=130

[MOP]

There is a very good post going on up on OSO about it, http://www.offshoreonly.com/forums/showthread.php?t=141390

I read somewhere that there were other variations.

Phil

[mrfixxall]

yep run them in the race cars,, wana make more power?go with the 4/7 55mm roller bearing cam,,but you have to machine the block wear the cam bearings go..